Article
Engineering, Geological
Shi-Jin Feng, Jia-Liang Shi, Yang Shen, Hong-Xin Chen, Ji-Yun Chang
Summary: This study experimentally investigated the shear behavior of the interface between smooth HDPE geomembrane and compacted clay liner. The cyclic loading resulted in greater vertical contraction and lower initial shear stiffness of the interface, with significant shear strength degradation observed within the first few shearing cycles followed by slight reinforcement in subsequent cycles. The dynamic shear modulus of the GMB/CCL interface is affected by normal stress levels and displacement amplitudes, while the damping ratio is only influenced by displacement amplitudes.
GEOTEXTILES AND GEOMEMBRANES
(2021)
Article
Multidisciplinary Sciences
Dapeng Zhang, Bowen Zhao, Keqiang Zhu, Haoyu Jiang
Summary: This study models and simulates the lazy-wave riser system using mathematical models and a large hydrodynamic analysis software, and determines the significant impact of second-order wave drift loads on the system response.
Article
Oceanography
Gu Honglu, Guo Haiyan, Li Xiaomin, Li Fuheng, Liu Zhen
Summary: In this study, a numerical SWR model with internal flow is constructed and a efficient numerical computation procedure is developed. The nonlinear dynamic response and fatigue damage of SWR under the combined excitation of irregular waves and TFMs is obtained through comprehensive parametric analysis. The results provide reference significance for the engineering design of SWR.
JOURNAL OF OCEAN UNIVERSITY OF CHINA
(2022)
Article
Engineering, Biomedical
Bobby Carroll, Minh-Tri Ho Thanh, Alison E. Patteson
Summary: The mechanical properties of tissues are crucial for tissue development and maintenance. By studying the mechanical behavior of fibrous networks embedded with stiff beads, it is found that the presence of beads enhances the mechanical performance of the network under compression, possibly due to the hindrance of network relaxation.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Philippe Viot
Summary: This study examines the mechanical response of hazelnut shells under compressive loading at different velocities, considering their microstructure. Quasistatic and dynamic compressions were applied using a testing machine and a flywheel. The shell exhibited typical elastic-brittle behavior at the macroscopic level. The strain rate was found to influence the macroscopic mechanical characteristics, such as maximum force, shell stiffness, and energy dissipation. Scanning electron microscopy observations revealed that the shell microstructure consists of microscopic sclereids, and the crack propagation involved shearing sclereids or cracking their interfaces. The study emphasizes the dependence of damage propagation in the microstructure on the compression velocity.
Article
Materials Science, Multidisciplinary
Weina Guo, Wentao Wang, Yifei Cui, Bing Wang, Jiuwen Bao, Peng Zhang, Dongyi Lei
Summary: The dynamic mechanical behaviors and damage properties of strain-hardening cementitious composites (SHCC) under different strain rates were investigated. The results showed that the dynamic performance and damage degree of SHCC increased with the increase of strain rate.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Geochemistry & Geophysics
Jinyu Li, Hongbao Zhao, Dongliang Ji, Huhu Wan, Chen Li
Summary: This study investigates the dynamic response characteristics of composite rock with different joint angles through static compression tests, dynamic impact tests, and numerical simulations. The results show that joint angles have an impact on the mechanical properties and failure modes of composite rock.
Article
Geochemistry & Geophysics
Song Xie, Ziyun Li, Qianghui Song, Peiyong Wang, Kaixi Xue, Dongyan Liu
Summary: By using the SHPB (split Hopkinson pressure bar) test, the failure mode and dynamic stress-strain curves of marble samples were determined. A dynamic constitutive model of marble was established and compared with experimental curves. The findings revealed three main stages of marble deformation under dynamic impact load, and showed that the sample exhibited brittleness in the macroscopic failure stage. The study also demonstrated that the degree of damage worsened with increasing strain rate, and that the calculated stress-strain curves were in agreement with experimental curves.
Article
Computer Science, Interdisciplinary Applications
Qiang He, Yonghui Wang, Hang Gu, Jun Feng, Honggen Zhou
Summary: A novel thin-walled structure named Sierpinski hierarchical triangular (SHT) tube is proposed to improve the energy absorption characteristics of regular triangular tubes by introducing Sierpinski hierarchy. Numerical simulations and experimental results show that SHT structure has higher energy absorption capacity compared to single-cell triangular tubes under the same conditions.
ENGINEERING WITH COMPUTERS
(2022)
Article
Transportation Science & Technology
P. B. Ataabadi, Renato Vargas, Marcilio Alves
Summary: This study investigates the impact behavior of composite rail sleepers under high-energy impact loads. The study reveals that the mechanical properties of the materials, specifically high-density polyethylene (HDPE) and glass fiber reinforced plastic (GFRP), are affected by temperature and strain rate. Low temperatures decrease the ductility of polymer sleepers, reducing their ultimate impact load-bearing capacity.
INTERNATIONAL JOURNAL OF RAIL TRANSPORTATION
(2023)
Article
Engineering, Mechanical
Van-Thuc Luu, Seung-Eock Kim
Summary: A novel advanced computational method based on the fiber-based approach is proposed for predicting the nonlinear dynamic behaviors of frames under environmental temperature changes. This method divides the cross-section into a matrix of fibers and assigns different temperatures to each fiber to trace material nonlinearity and consider geometric nonlinearity. The accuracy and computational performance of the method are validated through comparison with experimental results and the Abaqus.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Marine
Yuchao Yuan, Hongxiang Xue, Wenyong Tang
Summary: This paper investigates the nonlinear dynamic response of slender risers in the actual marine environment, considering the effects of internal fluid viscosity and adopting a force-decomposition model. The study highlights the significant impact of internal laminar flow on structural cumulative fatigue damage compared to dynamic response.
SHIPS AND OFFSHORE STRUCTURES
(2022)
Article
Engineering, Civil
Zhicheng Yang, Helong Wu, Jie Yang, Airong Liu, Babak Safaei, Jiangen Lv, Jiyang Fu
Summary: This study investigates the nonlinear forced vibration and dynamic buckling of fixed functionally graded graphene platelet-reinforced porous arches under impulsive loading. The research reveals the sensitivity of arches to impulsive load duration and the significantly increased critical dynamic buckling load of FG-GPLRC porous arches under instantaneous impact loading.
THIN-WALLED STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Faisal Nazeer, Syed Zohaib Hassan Naqvi, Abul Kalam, A. G. Al-Sehemi, Hussein Alrobei
Summary: The study investigated the redistribution of texture in magnesium alloy through high-temperature compression, leading to changes in flow behavior under dynamic compressive loading. The texture changes improved the ultimate compressive strength and could benefit the development of magnesium alloys.
Article
Multidisciplinary Sciences
Miguel A. Franesqui, Jorge Yepes, Juan Gallego
Summary: The aim of this research is to improve the mechanical performance of volcanic aggregate asphalt mixtures by using rubber-modified binders, and compare them with conventional mixtures. The study found that the use of tyre rubber modified bitumen significantly improves the performance and durability of the mixtures.
SCIENTIFIC REPORTS
(2022)