International Journal of Solids and Structures最新文献_第3页

Investigation of dynamic impact behavior of bighorn sheep horn 大角羊角动态冲击行为调查

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-11-06 DOI: 10.1016/j.ijsolstr.2024.113133

Emre Palta , Howie Fang , Qian Wang , Zheng Li

{"title":"Investigation of dynamic impact behavior of bighorn sheep horn","authors":"Emre Palta , Howie Fang , Qian Wang , Zheng Li","doi":"10.1016/j.ijsolstr.2024.113133","DOIUrl":"10.1016/j.ijsolstr.2024.113133","url":null,"abstract":"<div><div>The horn of the bighorn sheep is composed of keratin-based biological material that has a tubule-lamella structure, which gives it anisotropic hardening properties under impact loading. This paper aims to investigate the energy dissipation mechanisms inherent in bighorn sheep horns by developing a numerical material model that accounts for the horn’s anisotropic features and strain-rate effects. To this end, a transversely isotropic constitutive model, which includes both anisotropic hardening and strain-rate effects, was formulated to accurately predict the mechanical behavior of bighorn sheep horns. Material characterization was conducted through uniaxial compression tests that were conducted under quasi-static and dynamic conditions. The developed constitutive model was implemented into LS-Dyna via a user-defined material subroutine and was validated against empirical data. The validated numerical model was used to investigate the horn’s mechanical responses under dynamic loading conditions. The paper focused on impact energy dissipation mechanisms, including energy absorption and transition, stress distribution, and displacement wave propagation. The insights gained from this paper are expected to significantly contribute to the development of novel artificial materials with enhanced energy absorption and impact mitigation properties.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"307 ","pages":"Article 113133"},"PeriodicalIF":3.4,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influence of agglomeration and waviness phenomena on torsional oscillation of MWCNTs-reinforced composite rods 团聚和波状现象对 MWCNT 增强复合材料棒扭转振荡的影响

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-11-02 DOI: 10.1016/j.ijsolstr.2024.113127

Wenyuan Zhou , Yong Huang , Zhixin Wu , Mostafa Habibi , Mohamad Habibi , Riadh Marzouki

{"title":"Influence of agglomeration and waviness phenomena on torsional oscillation of MWCNTs-reinforced composite rods","authors":"Wenyuan Zhou , Yong Huang , Zhixin Wu , Mostafa Habibi , Mohamad Habibi , Riadh Marzouki","doi":"10.1016/j.ijsolstr.2024.113127","DOIUrl":"10.1016/j.ijsolstr.2024.113127","url":null,"abstract":"<div><div>There are some inevitable challenges during the manufacturing of reinforced composite structures. Agglomeration of reinforcement and wavy reinforcement are in this category. These phenomena possess remarkable effects on the mechanical behavior of reinforced composite structures. In the current research, the effect of agglomeration and waviness of reinforcements on torsional dynamic characteristics of multi-walled carbon nanotubes (MWCNTs) reinforced composite rods subjected to two various boundary conditions have been evaluated. Three dissimilar cross-section shapes have been considered to understand the effect of cross-section shapes on torsional behavior of MWCNTs-reinforced composite rods. A new form of Halpin-Tsai homogenization model has been exerted to estimate the material properties of composite structures. Additionally, Timoshenko-Gere theory in conjunction with the Hamilton’s principle has been employed to derive the partial differential governing equation of MWCNTs-reinforced composite rods. Afterward, the obtained equation was solved using an analytical approach. The precision of the methodology utilized has been evaluated against the results of previous studies documented in the literature. Ultimately, the effects of various significant parameters on the changes in natural torsional frequency have been analyzed and presented in a series of tables and figures. Based on the obtained results, the rectangular rod has the highest torsional frequency and also the effect of MWCNTs’ volume fraction depends on the consideration of waviness and agglomeration factors. At a greater volume fraction of MWCNTs, the agglomeration factor is more effective than the waviness factor and vice versa.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"306 ","pages":"Article 113127"},"PeriodicalIF":3.4,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

OXFORD-UMAT: An efficient and versatile crystal plasticity framework OXFORD-UMAT：高效多用途晶体塑性框架

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-11-01 DOI: 10.1016/j.ijsolstr.2024.113110

Eralp Demir , Alvaro Martinez-Pechero , Chris Hardie , Edmund Tarleton

{"title":"OXFORD-UMAT: An efficient and versatile crystal plasticity framework","authors":"Eralp Demir , Alvaro Martinez-Pechero , Chris Hardie , Edmund Tarleton","doi":"10.1016/j.ijsolstr.2024.113110","DOIUrl":"10.1016/j.ijsolstr.2024.113110","url":null,"abstract":"<div><div>The crystal plasticity-based finite element method is widely used, as it allows complex microstructures to be simulated and allows direct comparison with experiments. This paper presents the OXFORD-UMAT for Abaqus®, a novel crystal plasticity code that is publicly available online for researchers interested in using crystal plasticity. The model is able to simulate a wide range of materials and incorporates two different solvers based on the solution of slip increments and Cauchy stress, with variants of state update procedures including explicit, semi-implicit, and fully-implicit for computational efficiency that can be set by the user. Constitutive laws are available for a range of materials with single or multiple phases for slip, creep, strain hardening, and back stress. The model includes geometrically necessary dislocations that can be computed using finite element interpolation functions by four alternative methods, including the total form with and without a correction for the dislocation flux, a widely used rate form, and a slip-gradient formulation. In addition, the initial strengthening and subsequent softening seen in irradiated materials can also be simulated with the model. The analysis is available in 2D (plane stress and plane strain) and 3D, including linear and quadratic elements. Here we include full derivations of the key equations used in the code and then demonstrate the capability of the code by modeling single-crystal and large-scale polycrystal cases. Comparison of OXFORD-UMAT with other available crystal plasticity codes for Abaqus® reveals the efficiency of the proposed approach, with the backup solver offering greater versatility for handling convergence issues commonly found in practical applications.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"307 ","pages":"Article 113110"},"PeriodicalIF":3.4,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microvoiding and constitutive damage modeling with artificial neural networks 利用人工神经网络建立微空洞和构成性损伤模型

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-30 DOI: 10.1016/j.ijsolstr.2024.113125

Ning Li, Huck Beng Chew

{"title":"Microvoiding and constitutive damage modeling with artificial neural networks","authors":"Ning Li, Huck Beng Chew","doi":"10.1016/j.ijsolstr.2024.113125","DOIUrl":"10.1016/j.ijsolstr.2024.113125","url":null,"abstract":"<div><div>Continuum models of porous media have revolutionized computational fracture mechanics for traditional ductile materials, but the inherent assumptions have limited generalizability to other target materials or loading conditions. Here, we adopt a series of artificial neural networks (ANNs) to predict both the microscopic voiding characteristics (void shape, porosity) and macroscopic stress–strain constitutive response of porous elasto-plastic materials under various deformation states. We train the ANNs on a dataset generated from finite element models of 3D representative volume elements (RVEs), each containing a discrete spherical void, subjected to combinations of loading states. Results show that the data-driven model is capable of interpolative predictions as well as some levels of extrapolative predictions across a wide range of initial porosities (0–20%) and loading states outside of the training dataset, even at high deformation strains which induce extensive material softening and void growth. Through transfer learning, we further demonstrate that the ANNs, originally trained on a specific porous material dataset, can be readily adapted to other porous materials with substantially different properties through a significantly reduced training dataset. We discuss the implications of this machine learning approach vis-à-vis the extensively-developed Gurson model for porous material damage and failure predictions.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"306 ","pages":"Article 113125"},"PeriodicalIF":3.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142654137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing creep-recovery behavior of tropical Entandrophragma cylindricum wood: Traditional and fractional modeling methods 分析热带 Entandrophragma cylindricum 木材的蠕变恢复行为：传统和分数建模方法

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-30 DOI: 10.1016/j.ijsolstr.2024.113122

L.C. Nguedjio , J.S. Mabekou Takam , R. Moutou Pitti , B. Blaysat , N. Sauvat , J. Gril , F. Zemtchou , P.K. Talla

{"title":"Analyzing creep-recovery behavior of tropical Entandrophragma cylindricum wood: Traditional and fractional modeling methods","authors":"L.C. Nguedjio , J.S. Mabekou Takam , R. Moutou Pitti , B. Blaysat , N. Sauvat , J. Gril , F. Zemtchou , P.K. Talla","doi":"10.1016/j.ijsolstr.2024.113122","DOIUrl":"10.1016/j.ijsolstr.2024.113122","url":null,"abstract":"<div><div>Nowadays, wood stands as one of the foremost used construction materials, owing largely to its exceptional physical and mechanical properties. Ensuring the safety of timber structures necessitates thorough investigations into the influential phenomena that significantly affect their strength and longevity. The aim of this paper is to study the coupled creep-recovery behavior of tropical wood from the <em>Entandrophragma cylindricum</em> species by evaluating the influence of stress levels on the performance of rheological models. Hence, the Burger and Weibull classic models were introduced to elucidate these phenomena. These models have been compared with the fractional Maxwell and Zener models. Following the simulations, the Burger classic model effectively characterized creep and recovery, comprising elastic, viscoelastic, and viscous elements arranged in series, as well as the classic Weibull model. During the recovery phase, the four-parameter Weibull model demonstrated a satisfying description, achieving 99% accuracy compared to 97% for the four-parameter Burger classic model. Three-parameter fractional Maxwell model fit all phases of the process for all deformations with an average accuracy of 98% for creep and 95% for recovery. These results provide valuable information on the material’s ability to recover from deformation and offer essential insights for materials characterization, engineering design, and quality assurance processes in materials engineering.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"306 ","pages":"Article 113122"},"PeriodicalIF":3.4,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142587221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Advanced finite element modeling methods for tensile and bending analysis of arresting gear cables 用于拦阻索拉伸和弯曲分析的先进有限元建模方法

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-29 DOI: 10.1016/j.ijsolstr.2024.113126

Long Li , Yiming Peng , Yifeng Wang , Xiaohui Wei , Hong Nie

引用次数: 0

Free vibration of electroelastic thin-walled structures under static load 静载荷下电弹性薄壁结构的自由振动

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-29 DOI: 10.1016/j.ijsolstr.2024.113123

A.O. Kamenskikh, S.V. Lekomtsev, A.N. Senin, V.P. Matveenko

引用次数: 0

Design and sound absorption analysis of labyrinthine acoustic metamaterials based on fractal theory 基于分形理论的迷宫式声学超材料的设计与吸声分析

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-28 DOI: 10.1016/j.ijsolstr.2024.113121

DongXing Cao , LiMing Wang , JunRu Wang , XiangYing Guo , HaiTao Li

{"title":"Design and sound absorption analysis of labyrinthine acoustic metamaterials based on fractal theory","authors":"DongXing Cao , LiMing Wang , JunRu Wang , XiangYing Guo , HaiTao Li","doi":"10.1016/j.ijsolstr.2024.113121","DOIUrl":"10.1016/j.ijsolstr.2024.113121","url":null,"abstract":"<div><div>Acoustic metamaterials exhibit exceptional sound absorption capabilities. This study introduces a fractal labyrinthine acoustic metamaterial (FLAM) designed for sound absorption analyses in a low-frequency range of 1–2000 Hz. The fractal curve is constructed through side substitution on an isosceles right triangle, which is chosen as the spatial recursive substructure due to its self-similarity. The FLAM model is then developed. With the thermal viscous losses considered in narrow channels, the sound absorption coefficient of this model is theoretically analyzed as the structural parameters significantly affect the sound absorption. A comprehensive analysis of low-frequency sound absorption performance is conducted for the first three orders, and the reconstruction of the structure with different combinations of fractal orders is examined to optimize the FLAM. The results show that the proposed FLAM achieves nearly perfect absorption in the 50–400 Hz range, with peak absorption coefficients of 0.99, 0.95, and 0.95 for the first three orders. The proposed FLAMs for the first three orders have total thicknesses of <span><math><mrow><mn>0.032</mn><mi>λ</mi></mrow></math></span>, <span><math><mrow><mn>0.021</mn><mi>λ</mi></mrow></math></span>, and <span><math><mrow><mn>0.019</mn><mi>λ</mi></mrow></math></span>, demonstrating excellent low-frequency sound absorption at deep sub-wavelength scales.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"306 ","pages":"Article 113121"},"PeriodicalIF":3.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Metabarriers for mitigating traffic-induced surface waves: Mechanism dependence on buried arrangements 用于减缓交通引起的表面波的元载体：机制取决于埋设方式

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-28 DOI: 10.1016/j.ijsolstr.2024.113120

Yifei Xu , Haoran Lu , Zhigang Cao , Songye Zhu

{"title":"Metabarriers for mitigating traffic-induced surface waves: Mechanism dependence on buried arrangements","authors":"Yifei Xu , Haoran Lu , Zhigang Cao , Songye Zhu","doi":"10.1016/j.ijsolstr.2024.113120","DOIUrl":"10.1016/j.ijsolstr.2024.113120","url":null,"abstract":"<div><div>Locally resonant metamaterials provide exceptional wave manipulation capabilities in the low-frequency regime. This study introduces a buried metabarrier, which can simultaneously harness both resonant and geometric scatterings, to attenuate surface Rayleigh waves at both low and high frequencies induced by traffic. In particular, how the buried arrangements of metabarriers influence their resonant- and geometric-scattering mechanisms is investigated by considering the metabarrier units buried vertically and horizontally in the ground. To this purpose, a numerical finite element model, which is verified through comparisons with existing studies, is developed to analyze the attenuation performance of the metabarrier. Using this model, we perform parametric studies to examine the effects of the material properties and dimensions of the metabarriers on their attenuation behavior. Due to resonant scattering, low-frequency Rayleigh waves are mainly reflected by the vertical metabarriers; in contrast, they are predominantly converted into refracted bulk waves by the horizontal metabarriers. Additionally, the geometric scattering of horizontal metabarriers yields Bragg effects, which can reflect more high-frequency Rayleigh waves and induce a partial mode conversion to transverse bulk waves. Our systematic investigations will, to some extent, facilitate the future design of a well-performing metabarrier attenuating broadband Rayleigh waves.</div></div>","PeriodicalId":14311,"journal":{"name":"International Journal of Solids and Structures","volume":"306 ","pages":"Article 113120"},"PeriodicalIF":3.4,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Mixed-mode fracture prediction of notched components using phase-field approach 利用相场方法预测缺口部件的混合模式断裂

IF 3.4 3区工程技术

International Journal of Solids and Structures Pub Date : 2024-10-26 DOI: 10.1016/j.ijsolstr.2024.113113

Bahador Bahrami, Hossein Ahmadian, Mohammad R. Mehraban, Majid R. Ayatollahi

引用次数: 0