Mechanics Research Communications最新文献_第4页

Balancing surface quality and printing cost of Haynes 282 alloy in laser powder bed fusion using MASSIF simulation 利用MASSIF模拟平衡Haynes 282合金激光粉末床熔合的表面质量和打印成本

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-08-05 DOI: 10.1016/j.mechrescom.2025.104493

Jiahao Wang , Junwon Seo , Daniel Diaz, Anthony Rollett

{"title":"Balancing surface quality and printing cost of Haynes 282 alloy in laser powder bed fusion using MASSIF simulation","authors":"Jiahao Wang , Junwon Seo , Daniel Diaz, Anthony Rollett","doi":"10.1016/j.mechrescom.2025.104493","DOIUrl":"10.1016/j.mechrescom.2025.104493","url":null,"abstract":"<div><div>The surface quality of parts has always been one of the key factors in additive manufacturing, and there have been numerous studies exploring how printing parameters influence the surface quality of products. However, what is often overlooked is that printing parameters also affect the cost of an additively manufactured part, mainly due to the time required to complete a build. Surface roughness is known to limit fatigue life because the associated stress concentration points promote crack initiation, thus there is a need to investigate how to balance surface quality against printing cost. Here, we report on the use of a spectral micromechanics model, Micromechanical Analysis of Stress-Strain Inhomogeneities with Fourier Transforms (MASSIF), to assess the impact on stress concentrations of surface quality of Haynes 282 alloy printed using varying contour parameters in laser powder bed fusion (LPBF). This workflow used laboratory-scale CT images as input, for which we developed a segmentation model based on the U-net architecture to mitigate the beam-hardening effect. By incorporating the axis of print time/cost into this study, in terms of stress mitigation, we found that a single contour scan can be as effective as the LPBF manufacturer’s recommended double contour scan. Our simulation results indicate that surface quality and printing cost are closely related to contour parameters, and optimizing contour parameters helps achieve a balance between printing cost and surface roughness. This study introduces an innovative approach that combines qualitative and quantitative analyses, offering valuable insights for optimizing additive manufacturing processes.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104493"},"PeriodicalIF":2.3,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144907122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multiscale crystal plasticity modeling of deformation in an austenitic stainless steel 奥氏体不锈钢形变的多尺度晶体塑性建模

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-08-05 DOI: 10.1016/j.mechrescom.2025.104490

Anirban Patra , Carlos N. Tomé

{"title":"Multiscale crystal plasticity modeling of deformation in an austenitic stainless steel","authors":"Anirban Patra , Carlos N. Tomé","doi":"10.1016/j.mechrescom.2025.104490","DOIUrl":"10.1016/j.mechrescom.2025.104490","url":null,"abstract":"<div><div>This work presents a multiscale crystal plasticity framework for modeling the deformation of 317L austenitic stainless steel at two different spatial scales: full field and mean field. Within full field, crystal plasticity finite element simulations are performed using a dislocation-density-based constitutive model in the <span><math><mi>ρ</mi></math></span>-CP framework. The same constitutive model and parameters are then used in the mean field VPSC framework, along with additional consideration for the distribution of intragranular stresses, to predict the tensile deformation of a mildly textured polycrystalline aggregate. The VPSC model is validated by predicting the response under plane strain compression and comparison with the <span><math><mi>ρ</mi></math></span>-CP counterparts. Both models are used to predict the internal lattice strains and compared with available experimental neutron diffraction data. The <span><math><mi>ρ</mi></math></span>-CP model is also used to predict the distribution of the internal strains, which compare qualitatively with the experimental measurements. Based on the statistical analysis of the data from the <span><math><mi>ρ</mi></math></span>-CP simulation, a physical basis is provided for the parameter representing the distribution of intragranular stresses in the VPSC model. Overall, this work demonstrates the application of the multiscale crystal plasticity framework for predicting the deformation and microstructure evolution (dislocation densities and residual strains) at different spatial scales (intergranular and intragranular). Depending on the application of interest, full field simulations may be performed to predict the spatially resolved microstructure evolution characteristics, while computationally efficient mean field simulations may be performed to predict the aggregate behavior using identical constitutive models and parameters.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104490"},"PeriodicalIF":2.3,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144780158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Localized modulated strain waves in an acoustic metamaterial 声学超材料中的局域调制应变波

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-31 DOI: 10.1016/j.mechrescom.2025.104484

A.V. Porubov

引用次数: 0

Buffering performance of 3D-printed TPU-based packaging: Experimental and numerical analysis 基于3d打印tpu的封装缓冲性能：实验和数值分析

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-28 DOI: 10.1016/j.mechrescom.2025.104492

Danyang Li , Gaimei Zhang , Min Wu , Lehao Lin , Hui Liu , Jiazi Shi , Jiandong Lu , Dongdong Wang , Yonggang Yang , Kang Du

{"title":"Buffering performance of 3D-printed TPU-based packaging: Experimental and numerical analysis","authors":"Danyang Li , Gaimei Zhang , Min Wu , Lehao Lin , Hui Liu , Jiazi Shi , Jiandong Lu , Dongdong Wang , Yonggang Yang , Kang Du","doi":"10.1016/j.mechrescom.2025.104492","DOIUrl":"10.1016/j.mechrescom.2025.104492","url":null,"abstract":"<div><div>To advance the application of 3D printing in sustainable cushioning packaging, this study investigates the energy absorption characteristics of thermoplastic polyurethane (TPU) materials with varying cellular structures and infill densities. Grid and cubic honeycomb structures were designed using TPU83A and TPU95A materials, fabricated via fused deposition modeling (FDM), and subjected to static compression tests to derive stress-strain relationships and buffer coefficients. Finite element simulations in ABAQUS further analyzed static and dynamic mechanical behaviors. Experimental results revealed that the 40 % filled TPU95A grid structure has the largest elastic modulus and the highest compressive strength (1.256 MPa), while the TPU83A grid structure with 20 % infill exhibits the best cushioning performance due to better material flexibility and lower infill density (the minimum buffer coefficient is 2.15 at 44 % strain). Dynamic impact simulations indicated that the TPU83A grid structure with 30 % infill achieved superior resilience and compressive strength under transient loading. These findings highlight the critical role of material hardness, infill density, and structural geometry in balancing compressive resistance and energy absorption. The study validates the feasibility of 3D-printed TPU structures for customizable cushioning packaging, providing data-driven insights for optimizing lightweight and eco-friendly protective solutions.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104492"},"PeriodicalIF":2.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144749361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Size-dependent snap buckling behavior of functionally graded sinusoidal shallow nano-arches supported by elastic horizontal springs using the stress-driven nonlocal approach 基于应力驱动的非局部方法研究弹性水平弹簧支撑的功能梯度正弦浅纳米拱的尺寸依赖性屈曲行为

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-23 DOI: 10.1016/j.mechrescom.2025.104487

Ayfer Tekin Atacan , R. Faruk Yükseler

{"title":"Size-dependent snap buckling behavior of functionally graded sinusoidal shallow nano-arches supported by elastic horizontal springs using the stress-driven nonlocal approach","authors":"Ayfer Tekin Atacan , R. Faruk Yükseler","doi":"10.1016/j.mechrescom.2025.104487","DOIUrl":"10.1016/j.mechrescom.2025.104487","url":null,"abstract":"<div><div>This study investigates the nonlocal nonlinear snap-through instability of functionally graded (FG) sinusoidal shallow nano-arches with horizontal spring supports under sinusoidal vertical loading. To capture size-dependent behavior, the stress-driven nonlocal elasticity theory is employed, as it addresses the inconsistencies associated with the strain-driven nonlocal model. The geometric nonlinearity is incorporated via the von Kármán strain theory within the framework of the Euler-Bernoulli beam theory. The principle of virtual work is used to derive the equilibrium equations and the boundary conditions for the spring supports. The resulting governing differential equations are transformed into algebraic equations via the generalized differential quadrature method. Nonlinear equilibrium paths are traced by surpassing the limit points using the displacement-controlled Newton-Raphson method. The snap-through buckling load, corresponding central deflection, the intensity of the snap-through buckling, and the horizontal support reactions are determined numerically. The results reveal that the nonlinear response of the elastically supported FG sinusoidal shallow nano-arches is significantly influenced by the combined effects of the nonlocal parameter, support stiffness, modular ratio, power-law index, and modified slenderness. Each parameter exhibits distinct effects in the local and nonlocal regimes, emphasizing the importance of accounting for their interaction in the design of nano-structural systems.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104487"},"PeriodicalIF":2.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Deep learning for constructing ordinary differential equations in Hamiltonian formulation of multibody systems 用深度学习构造多体系统哈密顿公式中的常微分方程

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-22 DOI: 10.1016/j.mechrescom.2025.104485

Shuonan Dong, Ryo Kuzuno, Kanjuro Makihara, Keisuke Otsuka

{"title":"Deep learning for constructing ordinary differential equations in Hamiltonian formulation of multibody systems","authors":"Shuonan Dong, Ryo Kuzuno, Kanjuro Makihara, Keisuke Otsuka","doi":"10.1016/j.mechrescom.2025.104485","DOIUrl":"10.1016/j.mechrescom.2025.104485","url":null,"abstract":"<div><div>Differential algebraic equations (DAEs) and ordinary differential equations (ODEs) are widely used for multibody dynamic analysis. DAEs offer advantages such as systematic formulation and direct expression of constraint forces, while ODEs excel in superior computational efficiency and compatibility with control or estimation models. Methods such as the coordinate partitioning method have been developed to derive ODEs by constructing an explicit mapping of independent variables. However, such a transformation is not always easily available, for instance, when introducing nonlinear constraint conditions or analyzing closed-looped mechanisms. Therefore, data-driven methods have garnered significant attention in recent years. Focusing on the Hamiltonian formulation for the advantages such as numerical stability and systematic handling of systems with varying masses, this study proposes using long short-term memory, a deep learning method, to predict Lagrange multipliers and construct ODEs. Two numerical simulations are used to evaluate the accuracy of the proposed approach.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104485"},"PeriodicalIF":2.3,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Multipole distributions and hyper-fluxes 多极分布和超通量

IF 1.9 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-22 DOI: 10.1016/j.mechrescom.2025.104482

Vladimir Gol’dshtein , Reuven Segev

引用次数: 0

Computational analysis of region-specific bone remodeling in the human femur via strain energy decomposition 基于应变能分解的人类股骨区域特异性骨重构的计算分析

IF 1.9 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-21 DOI: 10.1016/j.mechrescom.2025.104481

R. Allena

{"title":"Computational analysis of region-specific bone remodeling in the human femur via strain energy decomposition","authors":"R. Allena","doi":"10.1016/j.mechrescom.2025.104481","DOIUrl":"10.1016/j.mechrescom.2025.104481","url":null,"abstract":"<div><div>This paper proposes a finite element model of bone remodeling that is applied to a two-dimensional human femur. Based on previous works, the model distinguishes between hydrostatic and deviatoric strain energy components in order to mimic their respective contributions to the remodeling stimulus. Three physiologically relevant loading conditions — muscular loading, bending-torsion, and twisting — were investigated to determine how localized mechanical stimuli affect the evolution of bone mass density, bulk modulus, and shear modulus. Our results indicate that remodeling responses are very region-specific and depend on both the manner and intensity of mechanical loading. Under muscular force, energy concentrations and remodeling activity were restricted to the femoral neck and mid-diaphysis. Torsional loads created larger deviatoric energy fields, particularly in the femoral shaft and neck, resulting in increased shear modulus. The model’s sensitivity to strain mode was validated by comparison with prior simulations on circular and square geometries, while additional asymmetries due to realistic bone structure were revealed. These findings give mechanistic insight into functional adaptability as well as a computational underpinning for patient-specific fracture risk assessments and treatment planning.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104481"},"PeriodicalIF":1.9,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mechanical buckling analysis of porous circular plates with radially graded porosity using first-order shear deformation theory 基于一阶剪切变形理论的径向渐变多孔圆板力学屈曲分析

IF 1.9 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-18 DOI: 10.1016/j.mechrescom.2025.104483

M.J. Khoshgoftar, P. Akbari

{"title":"Mechanical buckling analysis of porous circular plates with radially graded porosity using first-order shear deformation theory","authors":"M.J. Khoshgoftar, P. Akbari","doi":"10.1016/j.mechrescom.2025.104483","DOIUrl":"10.1016/j.mechrescom.2025.104483","url":null,"abstract":"<div><div>Porous structures, known for their lightweight nature and tailorable mechanical properties, play a pivotal role in aerospace, automotive, and biomedical applications. Among these, circular plates with spatially varying porosity are particularly susceptible to buckling under compressive loading. This study examines the mechanical buckling behavior of functionally graded porous circular plates with radially varying porosity subjected to a uniformly distributed radial load. Two boundary conditions—simply supported and clamped edges—are considered. The governing equations are derived using first-order shear deformation theory (FSDT) to incorporate transverse shear effects and are solved analytically using a semi-exact Fourier–Bessel series expansion method, which offers a computationally efficient and accurate alternative to numerical approaches. The proposed formulation is validated through finite element simulations and benchmark results from the literature. The results highlight the distinct influence of radial porosity variation on structural stability, revealing that the critical buckling load is highly sensitive to the porosity distribution, plate geometry, and boundary conditions. Plates with reduced porosity toward the outer edge exhibit significantly enhanced buckling resistance, while clamped boundaries increase the critical load by 35–50 % over simply supported cases. The proposed method offers a practical and reliable framework for analyzing radially graded porous plates and provides a foundation for future studies involving coupled mechanical, thermal, or dynamic effects.</div></div>","PeriodicalId":49846,"journal":{"name":"Mechanics Research Communications","volume":"148 ","pages":"Article 104483"},"PeriodicalIF":1.9,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The influence of plasticity on cavity expansion in lithium-ion battery electrodes 锂离子电池电极塑性对空腔膨胀的影响

IF 2.3 4区工程技术

Mechanics Research Communications Pub Date : 2025-07-17 DOI: 10.1016/j.mechrescom.2025.104474

Riccardo De Pascalis

引用次数: 0