International Journal of Mechanical Sciences最新文献_第8页

Tooth-shape electromagnetic vibration absorber with adjustable positive and negative stiffness 齿形电磁吸振器，正负刚度可调

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-08 DOI: 10.1016/j.ijmecsci.2025.110480

Xi Wang , Liangjun Luo , Junxian Zhu , Wenhao Zou , Tao Wang , Guoqiang Fu , Caijiang Lu

{"title":"Tooth-shape electromagnetic vibration absorber with adjustable positive and negative stiffness","authors":"Xi Wang , Liangjun Luo , Junxian Zhu , Wenhao Zou , Tao Wang , Guoqiang Fu , Caijiang Lu","doi":"10.1016/j.ijmecsci.2025.110480","DOIUrl":"10.1016/j.ijmecsci.2025.110480","url":null,"abstract":"<div><div>To achieve adjustable positive and negative stiffness characteristics and broaden the operational frequency bandwidth, this study proposes a tooth-shape electromagnetic vibration absorber (EVA). The EVA comprises a mechanical spring, an iron oscillator, a coil, and an iron stator. Structurally, it is divided into two subsystems: a negative stiffness component (EVA-1) and a positive stiffness component (EVA-2), and each of them utilizes different mechanical springs. EVA employs an electromagnetic tuning mechanism to adjust the current, which is able to automatically switch stiffness characteristics according to the target frequency band of vibration suppression. An analytical model of electromagnetic force generated by EVA is established based on magnetic flux lines, considering tooth width and pitch. The displacement intervals fall into three categories based on the relative position of the oscillator and stator teeth: (1) partial overlapping, (2) complete overlapping, and (3) complete separation. The analytical results are validated by comparison with finite element simulation and experimental data. EVA has been successfully fabricated, and its performance has been evaluated. Experimental results exhibit that EVA-1 provides the stiffness tuning bandwidth from 7.7 Hz to 9.7 Hz, while EVA-2 provides the tuning bandwidth from 13.7 Hz to 17.3 Hz. The measured stiffness characteristics align well with the results of Maxwell finite element analysis as well as the analytical model. In the vibration suppression experiment, EVA-1 and EVA-2 demonstrate significant effectiveness, reducing the vibration by more than 76% and 89%, respectively. These findings highlight the promising potential of EVA for real-world vibration control applications, particularly in scenarios requiring broadband frequency adaptability.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110480"},"PeriodicalIF":7.1,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plastic deformation and nano-cutting characteristics of nanocrystalline Ni-based superalloy 纳米晶镍基高温合金的塑性变形与纳米切削特性

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-08 DOI: 10.1016/j.ijmecsci.2025.110483

Rengang Lu , Jiabin Cai , Yulian Jiang , Zhiguo Feng

{"title":"Plastic deformation and nano-cutting characteristics of nanocrystalline Ni-based superalloy","authors":"Rengang Lu , Jiabin Cai , Yulian Jiang , Zhiguo Feng","doi":"10.1016/j.ijmecsci.2025.110483","DOIUrl":"10.1016/j.ijmecsci.2025.110483","url":null,"abstract":"<div><div>Molecular dynamics simulations of nano-cutting nanocrystalline Ni-based superalloy (NCNBS) were performed to investigate contact-induced plastic deformation and the mechanical characteristics. The results indicate that deformation in single crystalline workpieces is predominantly governed by dislocation slip, whereas deformation in nanocrystalline workpieces is attributed to the synergistic action of multiple mechanisms: (1) grain boundary (GB) sliding and migration, (2) GB expansion and cleavage cracking, (3) triple junction migration and rotation, (4) grain rotation and merging, (5) grain coarsening, and (6) nucleation and expansion of stacking faults and deformation twins originating at the machining surface and GBs. The grain refinement-induced reverse Hall-Petch effect results in significant reductions in surface roughness (−14.05%), thrust force (−17.27%), and average dislocation line length (−14.36%); however, it increases the friction coefficient by 14.29%. Furthermore, surface roughness, cutting forces, and friction coefficients exhibit strong correlations with cutting velocities and depths. Stress and strain primarily propagate along GBs, yet these GBs effectively inhibit their transmission along the original paths within grain interiors. Elevated cutting parameters (grain number, cutting velocity, and cutting depth) amplify both the values and affected areas of high stress and strain. The HCP generation rates decrease in lockstep with the cutting velocity, indicating velocity’s marked suppression of dislocation nucleation and expansion. These findings elucidate the atomic-scale material removal mechanisms in NCNBS and establish innovative frameworks for design optimization and parameter selection in ultra-precision component manufacturing.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110483"},"PeriodicalIF":7.1,"publicationDate":"2025-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144272410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hierarchical truss-core sandwich cylinder: Additive manufacturing, testing and multi-elastoplastic-failure analyzing 分层桁架芯夹芯筒：增材制造、试验及多弹塑性失效分析

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijmecsci.2025.110479

He Zhang , Hengyi Zhu , Hougai Shi , Hualin Fan

{"title":"Hierarchical truss-core sandwich cylinder: Additive manufacturing, testing and multi-elastoplastic-failure analyzing","authors":"He Zhang , Hengyi Zhu , Hougai Shi , Hualin Fan","doi":"10.1016/j.ijmecsci.2025.110479","DOIUrl":"10.1016/j.ijmecsci.2025.110479","url":null,"abstract":"<div><div>To develop lightweight aerospace structures, a hierarchical truss-core sandwich cylinder (HTSC) was designed, additively manufactured, tested and analyzed. The powder bed fusion (PBF) technique, a form of laser additive manufacturing (AM), was employed to print the HTSC. Uniaxial compression experiment reveals that the AM HTSC exhibits excellent mechanical performances with prolonged plastic deformation and ultimate failure of local plastic buckling. A multi-elasoplastic-failure theory was proposed to consistently predict the plastic buckling load with the experiment. Finite element modeling (FEM) was employed to examine the interplay between the local and global plastic post-buckling modes. Compared with corrugated-core and X-core sandwich cylinders, the HTSC has comparable mechanical performance when the diameter is 300 mm, while significantly outperforms the alternatives in terms of ultimate load and plastic deformation abilities when the diameter is enlarged to 3962.4 mm. At the same time, the long plastic platform deformation confirms that the failure of the AM HTSC might not present itself as a catastrophic sudden failure. These findings suggest that to make large-sized aerospace cylinders, this hierarchical truss-core sandwich configuration is a more suitable alternative design scheme.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110479"},"PeriodicalIF":7.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Peridynamics model for bi-material interfaces incorporating contact friction effects 结合接触摩擦效应的双材料界面周动力模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijmecsci.2025.110476

Shize Zhao , Yongsheng Liu , Haoran Xu , Jianxin Xia , Gansheng Yang

{"title":"Peridynamics model for bi-material interfaces incorporating contact friction effects","authors":"Shize Zhao , Yongsheng Liu , Haoran Xu , Jianxin Xia , Gansheng Yang","doi":"10.1016/j.ijmecsci.2025.110476","DOIUrl":"10.1016/j.ijmecsci.2025.110476","url":null,"abstract":"<div><div>Interface mechanical behavior significantly affects the structural integrity of composites and the reliability of engineering systems, with contact friction being a key contributor to interface failure. To investigate the failure mechanisms of material interfaces, this study develops a coupled bonding-contact friction peridynamics (PD) interface model. The bond-based PD is employed to describe the bonding and debonding processes. For characterizing contact friction, a three-dimensional nonlocal contact friction model is proposed to capture the friction behavior following debonding. The model incorporates long-range forces to account for spatially distributed contact effects, enabling accurate representation of interface behavior during both sticking and sliding contact friction stages. The contact friction model is verified through a two-block sliding model and Brazilian splitting experiments. Results show that the PD simulations exhibit close agreement with the finite element method (FEM) and experimental results. Combined with the classical microbond test, the applicability of the proposed model across different scales in the entire interface failure process is confirmed. Accounting for friction reduces the error in simulating peak pull-out force from 20.8 % to 1.3 %. In addition, a steel rod-cement interface debonding experimental model is designed. By comparing simulation results with experimental data, the error in predicting the peak load is reduced from 12.9 % to 6 % when friction is included. Furthermore, including friction enables accurate representation of the bonding and friction evolution during interface failure. This study provides an effective method for characterizing bonding and friction mechanisms during interface failure, with potential engineering application value.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110476"},"PeriodicalIF":7.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomic perspective on plasticity mechanism of ionic-covalent silver sulfide 离子共价硫化银塑性机理的原子视角研究

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijmecsci.2025.110471

Guanlin Yang , Hexiang Peng , Jian Huang , Hongjian Chen , Shifang Xiao , Wangyu Hu

{"title":"Atomic perspective on plasticity mechanism of ionic-covalent silver sulfide","authors":"Guanlin Yang , Hexiang Peng , Jian Huang , Hongjian Chen , Shifang Xiao , Wangyu Hu","doi":"10.1016/j.ijmecsci.2025.110471","DOIUrl":"10.1016/j.ijmecsci.2025.110471","url":null,"abstract":"<div><div>Due to the diversity of atomic bonding, good plasticity and machinability are often considered hallmark characteristics of metals. Novel plastic inorganic semiconductors like α-Ag<sub>2</sub>S have challenged this conventional thinking, but relevant first-principles calculations still lack an intuitive and comprehensive understanding of the underlying plasticity mechanisms. From the perspective of machine learning molecular dynamics that can describe the microstructure evolution aptly, this work reveals the plasticity mechanism of the ionic-covalent system α-Ag<sub>2</sub>S. It is found that the S sublattice stabilized by movable Ag acts as a framework during deformation, while the mechanical response of α-Ag<sub>2</sub>S is sublattice-dependent. Shear bands or kink bands originating from random and local micro-kinks signify the plastic features, and the subsequent amorphization enables sustained deformation under high strains. Different from features in metals, the oppositely signed dislocation pairs in α-Ag<sub>2</sub>S can achieve nucleation and motion through coordinated lattice expansion and contraction, while the twining-like kink triggered in a staggered manner allows the material to accommodate large shear strains. The established idealized models capture the unconventional dislocation pair and pseudo-twinning kink, narrowing the blind area in our understanding of plasticity mechanisms within similar systems. The summarized novel structural and deformation features provide clear clues for identifying other plastic ionic-covalent crystals in superionic conductors.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110471"},"PeriodicalIF":7.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic alignment of nanotubes for toughening fiber-reinforced composites 纳米管增韧纤维增强复合材料的磁取向研究

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijmecsci.2025.110478

Wei Qiang , Xiaoyu Zhang , Jin Lai , Yifeng Yu , Zhenhua Song , Xin Zhang

{"title":"Magnetic alignment of nanotubes for toughening fiber-reinforced composites","authors":"Wei Qiang , Xiaoyu Zhang , Jin Lai , Yifeng Yu , Zhenhua Song , Xin Zhang","doi":"10.1016/j.ijmecsci.2025.110478","DOIUrl":"10.1016/j.ijmecsci.2025.110478","url":null,"abstract":"<div><div>This study investigates the multiscale toughening mechanisms of fiber-reinforced polymer (FRP) laminates enhanced with magnetically aligned Fe<sub>3</sub>O<sub>4</sub>-grafted carbon nanotubes (CNTs). CNTs were successfully oriented vertically in the fabrication of carbon fiber-reinforced polymer (CFRP), glass fiber-reinforced polymer (GFRP), and hybrid fiber-reinforced polymer (HFRP) laminates to improve their interlaminar fracture toughness. Double cantilever beam (DCB) tests revealed that the aligned CNTs significantly increased Mode I fracture toughness by 40.9 % in CFRP, 34.6 % in GFRP, and 76.3 % in HFRP at an optimal content of 0.3 wt. %. Scanning electron microscopy (SEM) analyses indicated enhanced fiber-matrix interfacial bonding, greater resin plastic deformation, and more tortuous crack paths due to the presence of CNTs. Molecular dynamics (MD) simulations further demonstrated that vertically aligned CNTs provide superior resistance to crack propagation through mechanisms such as nanotube bridging, anchoring, and energy dissipation. These findings offer new insights into the design of multiscale-toughened composite structures and highlight the effectiveness of magnetic alignment strategies in improving interlaminar performance.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"301 ","pages":"Article 110478"},"PeriodicalIF":7.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal tuned inerter negative stiffness damper design for adjacent structures 相邻结构的优化调谐干涉负刚度阻尼器设计

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-07 DOI: 10.1016/j.ijmecsci.2025.110454

Ning Su , Zhongyang Tian , Cong Zeng , Zhaoqing Chen , Zhuo Xu , Jing Bian , Yi Xia

{"title":"Optimal tuned inerter negative stiffness damper design for adjacent structures","authors":"Ning Su , Zhongyang Tian , Cong Zeng , Zhaoqing Chen , Zhuo Xu , Jing Bian , Yi Xia","doi":"10.1016/j.ijmecsci.2025.110454","DOIUrl":"10.1016/j.ijmecsci.2025.110454","url":null,"abstract":"<div><div>This study develops analytical solutions for optimal vibration control of adjacent structures using tuned inerter-negative-stiffness dampers (TINSD), providing closed-form expressions for TINSD parameters based on H<sub>2</sub>-norm optimization that simultaneously address displacement, velocity and acceleration responses. The key contributions are explicit design formulas improving damping effectiveness by up to 8 times compared to conventional viscous dampers through combined inerter and negative stiffness effects, a practical parameter determination framework considering mass/frequency ratios and installation configurations, and extension to multi-modal control using multiple TINSD units to mitigate challenging higher-mode responses. Parametric studies examine key system parameter influences, while numerical validations using 20 earthquake records demonstrate effectiveness across structural configurations. The derived formulas offer practical engineering guidelines with theoretical rigor, providing direct design solutions with clear physical interpretation compared to existing numerical optimization methods. The multi-modal control strategy effectively addresses higher-mode responses where conventional methods often struggle, advancing vibration control design by combining theoretical completeness with practical applicability. These developments establish a systematic approach for adjacent structure vibration control through analytical optimization and multi-modal mitigation, demonstrating significant performance improvements while maintaining implementation feasibility for engineering practice.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110454"},"PeriodicalIF":7.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A coupled model of rolling process based on approximate rigid body model 基于近似刚体模型的轧制过程耦合模型

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110433

Zhiqiang Li , Tao Wang , Chenchen Zhao , Baoqi Guo , Zhongkai Ren , Zhengyi Jiang , Qingxue Huang

{"title":"A coupled model of rolling process based on approximate rigid body model","authors":"Zhiqiang Li , Tao Wang , Chenchen Zhao , Baoqi Guo , Zhongkai Ren , Zhengyi Jiang , Qingxue Huang","doi":"10.1016/j.ijmecsci.2025.110433","DOIUrl":"10.1016/j.ijmecsci.2025.110433","url":null,"abstract":"<div><div>Rolling is a rapid and efficient metal forming technique with vast potential for future applications. Concurrently, the finite element method (FEM) has become a standard tool for analyzing the rolling process. Typically, two models are employed for the rolls during this analysis: the rigid body model and the elastic body model. However, employing a rigid body model reduces computational accuracy, while using an elastic body model results in lower computational efficiency. To address this issue, this study developed an approximate rigid body model. This model dynamically adjusts the displacement of the roll nodes within the rolling zone to ensure that the shape of the flattened roll remains consistent throughout the rolling process. This model accounts for roll flattening while avoiding the extensive computational time typically required to solve for roll deformation. In order to address the coupled deformation issues between roll deformation and plate deformation, a coupled model based on the approximate rigid body model has been established. This coupled model utilizes the FEM to calculate the deformation of the plate as well as the associated rolling force. Subsequently, the shape of the roll is updated in accordance with this force, and the plate's deformation is recalculated. This process is iteratively repeated until the rolling force converges to a predetermined standard. Upon verification, the proposed coupled model demonstrates excellent convergence. The results obtained using the coupled model closely align with those derived from the finite element model employing elastic rolls. Compared to experimental measurements, the prediction errors for both the rolling force and the plate thickness are within 3 %. The coupled model offers a novel approach for rapidly and efficiently solving the deformation of die and workpieces in metal forming processes.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110433"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal performance of SGSP with porous layer under heat extraction 含多孔层SGSP的热抽提热性能

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110472

Jiang-Tao Hu , Shuo-Jun Mei , Lei Wang , Lei Xu

{"title":"Thermal performance of SGSP with porous layer under heat extraction","authors":"Jiang-Tao Hu , Shuo-Jun Mei , Lei Wang , Lei Xu","doi":"10.1016/j.ijmecsci.2025.110472","DOIUrl":"10.1016/j.ijmecsci.2025.110472","url":null,"abstract":"<div><div>Salt gradient solar pond (SGSP) is a promising solar energy collector, which can absorb solar radiation and store it as thermal energy for a long time. Efficient heat extraction is essential for the practical application of SGSP. However, the heat extraction may accelerate the erosion of the salt stratification, as it introduces disturbances to the flow field. This study employs a custom-built Lattice Boltzmann Method (LBM) code to investigate the effects of heat extraction and porous layers on the thermal performance of SGSPs. The results reveal that both heat extraction and the presence of a porous layer effectively suppress thermosolutal convection, thereby enhancing the thermal stability of SGSP. Notably, increasing the heat extraction rate of each tube proves more effective for improving heat storage than adding more extraction tubes. While heat extraction inevitably reduces the thermal storage capacity of SGSP, incorporating a porous layer with lower permeability helps mitigate this effect, promoting long-term thermal storage and stable operation. However, the beneficial influence of the porous layer diminishes under high heat extraction rates. Based on these insights, this study proposes optimized design parameters for porous layers and heat extraction to maximize SGSP performance.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110472"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144254547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermomechanical cloaking via compatibility-driven topology optimization 通过兼容性驱动的拓扑优化实现热机械隐身

IF 7.1 1区工程技术

International Journal of Mechanical Sciences Pub Date : 2025-06-06 DOI: 10.1016/j.ijmecsci.2025.110400

Xubing Cheng , Zongliang Du , Wen Meng , Chang Liu , Weisheng Zhang , Xu Guo

{"title":"Thermomechanical cloaking via compatibility-driven topology optimization","authors":"Xubing Cheng , Zongliang Du , Wen Meng , Chang Liu , Weisheng Zhang , Xu Guo","doi":"10.1016/j.ijmecsci.2025.110400","DOIUrl":"10.1016/j.ijmecsci.2025.110400","url":null,"abstract":"<div><div>This study presents a novel topology optimization framework for thermomechanical cloaking by introducing the compatibility of cloak interface (CCI). The essence is to make the actual boundary conditions along the exterior of the cloak consistent with the target boundary conditions, including the Dirichlet and Neumann conditions (i.e., temperature and thermal loads for thermal cloaking, displacement and nodal forces for mechanical cloaking). Compared to conventional design strategies, the proposed method offers a unified design framework for the rational design of multifunctional cloaking without being restricted by the invariance requirement of transformation-based approaches. At the same time, this method only requires analysis of the cloak region during the optimization process, thereby reducing the computational cost. Furthermore, the explicit topology optimization based on Moving Morphable Voids (MMV) produces cloaks with geometric information, enabling its practical application. Several numerical examples demonstrate the method’s effectiveness, robustness, and adaptability for thermal and multifunctional cloaking in lattice and continuum structures with various shaped openings, as well as multiple load cases. The current design strategy is extendable to other multiphysics cloaking applications, offering new insights into advanced functional material design.</div></div>","PeriodicalId":56287,"journal":{"name":"International Journal of Mechanical Sciences","volume":"300 ","pages":"Article 110400"},"PeriodicalIF":7.1,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144240010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0