STUDY ON THE EQUIVALENT PROPERTIES AND ENERGY ABSORPTION PROPERTIES OF A NOVEL MATERIAL WITH NEGATIVE POISSON′S RATIO (MT) by WU XiaoLi, LI ZhaoKai

“…The mechanical properties of a new type of material with negative Poisson′s ratio（based on YSH structural cell） under dynamic compression are designed and studied. Through the finite element simulation method, the response difference of different structural parameters（inclined wall angle, width ratio, aspect ratio） to the equivalent elastic mechanical performance parameters of the cell is compared, and the influence of these structural parameters on the energy absorption performance is explored, and the research is further extended to the structure under four common functional gradient arrays. …”
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Design Analysis and Optimization of a Planar Compliant Micro-positioning Stage by Gui Heli, Xu Weisheng, Xu Tianqi, Cao Yi

“…Firstly, a novel planar two degrees of freedom micro positioning platform structure was designed based on the motion pair; secondly, a theoretical model of the platform's force-displacement relation and output displacement was established using the flexibility matrix method, and a theoretical model of the platform's natural frequency and instantaneous dynamic response was established based on the transfer matrix method; then, the correctness of the theoretical model was verified through finite element simulation. Theoretical research and simulation verification show that the platform has high static and dynamic performance, its input and output are fully decoupled, and the loss of motion does not exceed 1.8% under 0.3 mm input displacement; the first order natural frequency is 320.34 Hz, and the dynamic response is consistent with the simulation trend within 0.1 s. …”
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Effect of Clogging on the Permeability of Porous Asphalt Pavement by Yaolu Ma, Xianhua Chen, Yanfen Geng, Xinlan Zhang

“…To preliminarily reveal the decrease in permeability caused by clogging of permeable asphalt pavement, an innovative device was proposed to evaluate the anisotropy of permeability influenced by clogging, and the maximum drainage capacity without surface ponding can be obtained when the supplied water was controlled. Then, finite element models for asphalt pavements with hydromechanical coupling were proposed based on porous media theory and Biot’s theory. …”
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3D thickness effects around notch and crack tip stress/strain fields by R.C.O. Góes, J.T.P. Castro, M.A. Meggiolaro

“…To quantify how important they can be, first finite element techniques are used to simulate thickness and notch-tip radius effects in the fields around such tips, and to evaluate their importance from the structural design point of view. …”
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Dynamic Mechanical Simulation of 176 mm Pitch Compound Tooth Profile Travelling Wheel of Shearer by Kan Jinbiao

“…The engagement between travelling wheel and pin rail is non-conjugated drive,the traditional strength check method for gear is no longer applicable for travelling wheel. In the past,the finite element static mechanical simulation analysis is used for strength check of travelling wheel mostly,but the static mechanical simulation analysis can not accurately reflect the actual stress state of travelling wheel,and the calculation result is not very accurate. …”
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ANALYSIS OF THE CONSTRAINT EFFECT AND CREEP CRACK INITIATION TIME FOR STRUCTURE WITH ЕMBEDDED CRACKS by LI YuPeng, LI WenPeng, LI DingHe, WU DongQuan, WANG YuFeng, ZHENG YuXiang

“…The constraint effect and creep crack initiation time were analysed using the ductility exhaustion approach by 3D finite element method. The results revealed that the max value of constraint parameter was located at the end of major axis of elliptical crack, and the constraint levels enlarge with increasing the crack length or the crack depth, which meant that embedded cracks with a larger <italic>a</italic>/<italic>t</italic> or <italic>a</italic>/<italic>c</italic> would suffer from worse condition of stress concentration and there would be more dangerous. …”
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Analysis of Springback Behaviour in Micro Flexible Rolling of Crystalline Materials by Feijun Qu, Zhengyi Jiang, Xiaogang Wang, Cunlong Zhou

“…The model is first implemented in the finite element program ABAQUS to numerically predict the stress-strain relationship of 304 stainless steel specimens over a range of average grain sizes. …”
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Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection by JiWei Wu, XueGang Wang, Lin Song, ShouMing Zhong, WenFeng Yin

“…In this study, a thermomechanical coupled finite element casing-cement-formation model of a thermal recovery wellbore is established. …”
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Seismic Analysis of a Viscoelastic Damping Isolator by Bo-Wun Huang, Jao-Hwa Kuang, Jung-Ge Tseng, Jyun-Cin Wang, Yu-Xian Qiu

“…The dynamic behavior of the viscoelastic isolator through shock impact of specific earthquake loading, recorded by a seismometer, is obtained via ANSYS finite element package. The amplitude of the isolator is quickly reduced by the viscoelastic material in the device and is shown in a time response diagram. …”
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Research on Impact Process of Lander Footpad against Simulant Lunar Soils by Bo Huang, Zhujin Jiang, Peng Lin, Daosheng Ling

“…Numerical simulation analyses were also conducted to simulate the vertical impact process. A 3D dynamic finite element model was built for which the material parameters were obtained from laboratory test data. …”
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Effects of Different Penetration Patterns on a Fault during Underground Fluid Injection by Xiaochen Wei, Qi Li, Xiaying Li, Zhiyong Niu, Xiangjun Liu, Lixi Liang

“…In this work, with the objective of avoiding risky faults in site selection in the Shengli Oilfield, we investigated the faults that are usually encountered in the target demonstration zone; based on the geophysical observations of fault structures, we designed different fault tectonic scenarios to investigate the different penetration patterns of faults. We used the finite element-based numerical method to assess the influence of the effective lateral and vertical reservoir transmissivity in each fault penetration pattern. …”
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Analysis of the Spatial-Frequency Characteristics of the Photo-Assisted Method of a Quartz Rough Surface Nano-Polishing by Vasyl Kanevskii, Serhii Kolienov, Valerii Grygoruk, Oleksandr Stelmakh, Hao Zhang

“…The numerical determination of the evanescent field optimal configuration formed near the quartz rough surface in the gaseous medium saturated with chlorine molecules when illuminated from the quartz side has been considered. The finite-element approach is used to solve the Helmholtz two-dimensional vector equation. …”
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Design and testing of a test rig for tubular joints hot-spot stress determination by Mohsin Iqbal, Saravanan Karuppanan, Veeradasan Perumal, Mark Ovinis, Muhammad Iqbal

“…The proposed setup has been validated against finite element analysis results. It accommodates joints made of various materials, such as steel, aluminium, or acrylic, and supports the investigation of SCFs under different combinations of axial, in-plane, and out-of-plane bending loads.…”
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Numerical Research of the Water Entry of Hyperelastic Spheres Within Low Froude Numbers by L. Zhang, R. Xie, H. Jia

“…The water-entry process of solid and hollow hyperelastic spheres was numerically simulated using the arbitrary Lagrange–Euler method, based on the finite element analysis software LS-DYNA. The effect of the different initial velocities on the cavity evolution and deformation of the sphere in a range of low Froude (Fr) numbers was investigated. …”
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Fatigue behavior of lubricated Ni-Ti endodontic rotary instruments by A. Brotzu, F. Felli, C. Lupi, C. Vendittozzi, E. Fantini

“…The aim of the present work is to contribute to the study of the fracture behavior of these endodontic rotary instruments particularly assessing whether the use of the aqueous lubricant gel can extend their operative life stating its reasons. A finite element model (FEM) has been developed to support the experimental results. …”
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Effect of Stiffness of Rolling Joints on the Dynamic Characteristic of Ball Screw Feed Systems in a Milling Machine by Dazhong Wang, Yan Lu, Tongchao Zhang, Keyong Wang, Akira Rinoshika

“…Taking a 3-axis computer numerical control (CNC) milling machine set ermined as a research object, the stiffness of its fixed joint between the column and the body together with the stiffness parameters of the rolling joints is evaluated according to the Takashi Yoshimura method. Then, a finite element (FE) model is established for the machine tool. …”
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Evaluation of thinning behaviour under the influence of plastic hardening and surface friction during small punch test by Sarthok Chandra Pandit, Nasrul Azuan Alang, Imam Ul Ferdous, Juliawati Binti Alias, Mohd Firdaus Bin Hassan, Asnul Hadi Bin Ahmad

“…The small punch test conditions are modeled using Finite Element (FE) software of Abaqus. An axisymmetric model with a bi-linear constitutive material model incorporating different plastic hardening slopes is employed. …”
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Seismic vulnerability assessment of a hospital building with and without retrofitting using RC shear walls by Fauzan, Aryo Agista Geby, Syandriaji Diva, Al Jauhari Zev, Bima Suwarso Deara

“…In this study, an assessment of the Third-Class Inpatient Building at the Sijunjung Regional General Hospital was carried out using the finite element method (ETABS V21). The structural assessment of the existing hospital building revealed that the inter-story drift values exceed the drift limit, and column and beam structural elements cannot withstand the working loads. …”
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Free Vibration Analysis of Functionally Graded Spherical Torus Structure with Uniform Variable Thickness along Axial Direction by Cong Gao, Xuhong Miao, Lin Lu, Ruidong Huo, Qiaolin Hu, Yanhe Shan

“…The numerical results obtained by the proposed method show great agreement with previously published literatures and those from the finite element program ABAQUS. The effects of boundary conditions and geometric parameters on the vibration responses of the structure are also presented. …”
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Three-Dimensional Analysis of Complex Rock Slope Stability Affected by Fault and Weak Layer Based on FESRM by Yang Li, Ling Yu, Weidong Song, Tianhong Yang

“…In this paper, taking a complex three-dimensional slope with fault and weak layer as the research object, the evolution laws of the stress field and damage zone of the slope are analyzed by using the finite element strength reduction method. The results show that the fault and weak layer have different degrees of effect on the slope stability. …”
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