Article
Engineering, Biomedical
Yaoke Wen, Tingyu Zhang, Wenmin Yan, Ye Chen, Guanghua Wang
Summary: A modified SHTB apparatus was used to study the dynamic tensile mechanical response of porcine muscles. The experimental results showed that porcine muscles exhibit nonlinear, rate-sensitive, and orthotropic behavior. The Mooney-Rivlin model with two material constants was able to represent the tensile response of porcine muscles at different strain rates.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Tao Zhang, Lan Yan, Lianjie Li, Mingshuai Huo, Hui Wu, Xuming Zha, Ningchang Wang, Xian Wu, Feng Jiang, Zhengyi Jiang, Xipeng Xu
Summary: Grain refinement has a significant impact on mechanical properties, and establishing the relationship between grain evolution and plastic behavior is essential. Through experimental research, it was found that the grain size has a significant influence on the yield stress, strain rate sensitivity, and thermal softening. Based on these findings, a new constitutive model was developed to accurately predict the mechanical behavior of the material.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Zhaocheng Zhang, Mohammad Khan, Catalin R. Picu
Summary: In this study, a mechanism-based constitutive formulation was proposed for the plastic deformation of beta-HMX crystals. Atomistic models were used to evaluate the relation between dislocation velocity and resolved shear stress in multiple slip systems, accounting for slip asymmetry. The resulting crystal plasticity model was Reuss averaged to produce a homogenized version. The model showed good strain rate sensitivity and pressure dependence, and was able to describe strain localization.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Engineering, Marine
Hiroyuki Yamada, Taisei Sakai, Nagahisa Ogasawara, Muneyuki Kokudai, Daisuke Shiomitsu, Tsutomu Fukui
Summary: Numerical analysis of impact phenomena, such as ship collisions and grounding, requires a material constitutive equation that considers strain rate and temperature dependence. This study proposes a method for determining the constitutive equation by optimization, which improves the accuracy of the analysis. The compression properties of SM490B steel for welded structures were investigated under different strain rates and temperatures, and the constitutive equation was determined using the Nelder-Mead method and a genetic algorithm. The study found that understanding the strain rate dependence through experiments and utilizing reference data from high-temperature impact tests are effective in determining the constants. A flowchart was also developed to describe the process for determining the material constitutive equation for hull materials, considering strain rate and temperature effects.
Article
Materials Science, Multidisciplinary
Kai Yao, Xiaohua Min
Summary: This study systematically clarifies the instantaneous strain rate sensitivity (ISRS) and strain rate sensitivity of strain hardening (SRSS) in the {332} < 113 > Ti-15Mo alloy exhibiting TWIP effect. The results show that ISRS is positively correlated with the change in the dislocation activation volume, while SRSS is negatively correlated with the evolution of deformation microstructures.
Article
Construction & Building Technology
Wonjun Shin, Hwisan Park, Jihoon Han
Summary: The study proposes a modified concrete material model that accurately represents the dynamic response and fracture behavior of concrete by considering strain rate-dependent parameters. The model is validated by comparing the numerical simulations with experimental results, showing good agreement.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Jin Wu, Fude Lu, Jiaxuan Chen, Mingqi Wang
Summary: This study investigated the influence of increased strain rate and the presence of entrapped air on the enhancement of foam material strength, and established a one-dimensional dynamic constitutive model to describe the deformation behavior of EVA foams.
Article
Biology
Kevin H. Putera, Jinhee Kim, So Young Baek, Stephen H. Schlecht, Melanie L. Beaulieu, Victoria Haritos, Ellen M. Arruda, James A. Ashton-Miller, Edward M. Wojtys, Mark Banaszak M. Holl
Summary: Approximately 300,000 ACL tears occur annually in the US, with 50% leading to knee osteoarthritis within a decade. Repetitive loading causes collagen unravelling and structural failure, but the relationship between tissue changes is poorly understood. This study shows that submaximal loading of cadaver knees leads to collagen unravelling and tissue compliance increase, particularly in highly mineralized regions at the ACL femoral enthesis.
COMMUNICATIONS BIOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Jianfeng Zhao, Baoxi Liu, Yanfei Wang, Yanxiang Liang, Jicheng Li, Xu Zhang
Summary: Gradient nano-grained (GNG) metals exhibit superior strength-ductility synergy compared to homogeneous counterparts. This study develops a dislocation density-based strain gradient plasticity model coupled with a damage model to describe the strain hardening and softening behavior of GNG material. The results predict the tensile response of GNG nickel with varying degrees of grain size gradient, revealing that dispersed strain bands stabilize in the nano-grained surface layer and improve ductility. The method developed in this study enhances the understanding of strength-ductility synergy and optimization of microstructure gradient in GNG materials.
MECHANICS OF MATERIALS
(2023)
Article
Chemistry, Physical
Kai Wang, Xuetao Zou, Guanyu Huang, Run Zhang, Kangbo Yuan, Xiaohu Yao
Summary: The abundant strengthening mechanisms in MEAs endow them with excellent comprehensive properties. In this study, the mechanical behaviors and micro deformation mechanisms of a CoCrNiSi0.2 MEA were investigated under different strain rates. It was found that the volume fraction of phase transformation increased significantly with the increasing strain rate, leading to a stronger precipitation-strengthening effect. This strain-rate-strengthening effect should not be ignored in constitutive modeling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Mengwen Xu, Qiangqiang Xiao, Xudong Zu, Yaping Tan, Zhengxiang Huang
Summary: This paper proposes that the abrupt change in flow stress sensitivity to strain rate in FCC metals can be attributed to microstructural evolution characteristics, and establishes a continuous semiempirical physical constitutive model to describe this plastic deformation behavior. The predicted results of the model generally have relative errors within +/- 10% of the experimental values, and outperform other five models in describing the behavior of annealed OFHC.
Article
Materials Science, Multidisciplinary
Xiuqi Li, Jialiang Tao, Alexander K. Landauer, Christian Franck, David L. Henann
Summary: This paper presents a methodology for experimental characterization and constitutive modeling of large-deformation mechanical behavior of viscoelastic foam materials. The proposed model combines hyperelastic and viscoelastic contributions and is validated through various experiments.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2022)
Article
Geosciences, Multidisciplinary
Zhoujie Gu, Rongxi Shen, Zhentang Liu, Xin Zhou, Xiaoliang Li, Zesheng Zang, Li Zhang, Wei Liu, Xi Wang
Summary: By using the split Hopkinson bar system, the mechanical behavior and energy change of coal were analyzed, and it was found that cracks were produced along the axial direction of coal samples under dynamic loading. The damage degree of coal samples intensified gradually within a certain range of strain rate. A dynamic mechanical constitutive model considering the influence of strain rate was established, and the damage changes of coal samples were analyzed.
NATURAL RESOURCES RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Gang Luo, Chunbo Wu, Kailong Xu, Lulu Liu, Wei Chen
Summary: The study focused on the compression properties of TDE86 epoxy resin at different temperatures and strain rates, revealing that the elastic modulus, yield stress, and yield strain of the epoxy increase with strain rate but decrease with temperature. The dynamic stress-strain curve of the epoxy can be divided into four stages, and there is no distinct relationship between yield strain and logarithmic strain rate at high strain rates.
MECHANICS OF MATERIALS
(2021)
Article
Polymer Science
Hosup Song, Grigori A. Medvedev, James M. Caruthers, Jun Young Jo, Jaewoo Kim
Summary: Historically, constitutive models for glassy polymers have focused on the stress-strain behavior observed in constant strain rate (CSR) loading, but the true test of such models lies in their ability to predict complex multistep deformations. A series of multistep experiments was conducted on a lightly crosslinked PBMA/MMA copolymer using EGDMA, with systematically varied parameters for intermediate steps, and none of the traditional constitutive models were able to qualitatively predict the data. However, a recently proposed toy model successfully captures the observed trends.
Article
Biophysics
Zhong Wang, Hui Zhao, Ji-ming Liu, Li-wen Tan, Peng Liu, Jian-hua Zhao
JOURNAL OF BIOMECHANICS
(2016)
Article
Multidisciplinary Sciences
Hui Zhao, Zhiyong Yin, Hongyi Xiang, Zhikang Liao, Zhengguo Wang
Article
Engineering, Biomedical
Sishu Guan, Zhikang Liao, Hongyi Xiang, Xiyan Zhu, Zhong Wang, Hui Zhao, Peng Liu, Xinan Lai
APPLIED BIONICS AND BIOMECHANICS
(2018)
Article
Clinical Neurology
Hao Wang, Xiyan Zhu, Zhikang Liao, Hongyi Xiang, Mingliang Ren, Minhui Xu, Hui Zhao
Article
Public, Environmental & Occupational Health
Hui Zhao, Guangyu Yang, Feng Zhu, Xin Jin, Paul Begeman, Zhiyong Yin, King H. Yang, Zhengguo Wang
TRAFFIC INJURY PREVENTION
(2013)
Article
Medicine, Legal
Hui Zhao, Zhiyong Yin, Guangyu Yang, Xingping Che, Jingru Xie, Wei Huang, Zhengguo Wang
JOURNAL OF FORENSIC AND LEGAL MEDICINE
(2014)
Article
Engineering, Biomedical
Yan Xiong, Xueliang Zhao, Hongyi Xiang, Yunjiao Wang, Zhikang Liao, Xiyan Zhu, Hui Zhao
APPLIED BIONICS AND BIOMECHANICS
(2018)
Article
Engineering, Biomedical
Chaofei Zhang, Wenjun Wang, Dennis Anderson, Sishu Guan, Guofa Li, Hongyi Xiang, Hui Zhao, Bo Cheng
APPLIED BIONICS AND BIOMECHANICS
(2019)
Article
Engineering, Manufacturing
Qiaolin Wang, Hongyi Xiang, Sishu Guan, Zhikang Liao, Xiyan Zhu, Zhiyong Yin, Hui Zhao
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2019)
Article
Multidisciplinary Sciences
Jun Yang, Hui Zhao, Gen Li, Qisheng Ran, Jingbo Chen, Zelin Bai, Gui Jin, Jian Sun, Jia Xu, Mingxin Qin, Mingsheng Chen
Article
Engineering, Manufacturing
Chengjian Feng, Aowen Duan, Jinlong Qiu, Sen Su, Wei Guo, Zhiyong Yin, Kui Li, Hui Zhao
INTERNATIONAL JOURNAL OF CRASHWORTHINESS
(2020)
Article
Biotechnology & Applied Microbiology
Guibing Li, Jinming Liu, Kui Li, Hui Zhao, Liangliang Shi, Shuai Zhang, Jin Nie
Summary: The study investigated the characteristics of pedestrian head-to-vehicle contact boundary conditions and head injury risk in real-world collisions using kinematic-based criteria. The findings revealed that head-to-windscreen contacts were predominant, with pedestrian head linear contact velocity below 45 km/h and angular contact velocity less than 40 rad/s being common.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Biomedical
Zhong Wang, Hui Zhao, Ji-ming Liu, Rui Chao, Tai-bang Chen, Li-wen Tan, Feng Zhu, Jian-hua Zhao, Peng Liu
CLINICAL BIOMECHANICS
(2017)
Article
Orthopedics
Wenjun Liu, Hui Zhao, Kui Li, Sen Su, Xiaoxiang Fan, Zhiyong Yin
CHINESE JOURNAL OF TRAUMATOLOGY
(2015)