Research on structural fatigue residual life of pitch bearing rings after pre-damage by ZHANG Mingqian, CHEN Guanci, DING Yinke, LIU Minghan, MAO Huaping

“…ObjectiveThe corrosion fatigue fracture of the wind turbine pitch bearing is a major failure mode, often leading to the blade detachment and shutdown. To this end, a finite element model of replacing the whole pitch bearing with a local one was proposed to investigate the structural fatigue remaining life of pitch bearings after corrosion of the raceways.MethodsA combined method of finite element software Ansys and three-dimensional fracture mechanics software Franc3D was adopted to simulate the corrosion pit by inserting a pre-damage at the location of the maximum equivalent stress in the bearing ring. …”
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Stress and Deformation Analysis of Composite Geomembrane for Seepage Prevention of Reservoir in Karst Area Under the Action of Reservoir Water Level and Groundwater Level by YANG Yang, LIU Hui, LI Yuqiao

“…The composite geomembrane has some advantages for seepage prevention treatment of reservoirs in karst area,but it may have adverse effect on the geomembrane due to the joint action of reservoir water level and groundwater level during operation period.In view of this,in order to study the suitability of composite geomembrane for seepage prevention of reservoir in karst area,by taking Lijiaping Reservoir in Qianjiang District,Chongqing City as an example,this paper carries out the finite element analysis through the large finite element software MIDAS GTS NX.The results show that:Under the combined action of reservoir water level and groundwater level,the distribution law of settlement deformation and horizontal deformation of reservoir basin does not differ much,but the decrease of groundwater level will lead to the increase of effective stress of overburden foundation,and then the increase of deformation.When the reservoir water level reaches the check water level and the groundwater level drops to the bedrock surface,the settlement of the reservoir basin,the tensile stress and tensile strain of the geomembrane reach the maximum value.Through calculation,the safety factors of tensile stress and tensile strain are both greater than the permissible safety factor 5.0 required by the code,which indicates that the composite geomembrane has a higher safety margin for seepage prevention.…”
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Design and analysis of modular pneumatic soft crawling robots by YIN Hongfei, LÜ Yuedong, SONG Xiaojuan

“…Therefore, a kind of honeycomb soft driving unit was designed, which can be connected and composed to realize the modular driving soft robot with different functions.MethodsThe material selection and mechanical analysis of the designed imitation honeycomb soft drive unit were carried out, and a nonlinear relational model between the driving pressure and deformation in the soft drive unit was established; the validity of the model was verified by combining with the finite element simulation. Based on the imitation honeycomb soft body drive unit module, a flexible soft robot and a bidirectional bending soft robot were designed, and finite element simulations on both configurations of soft robots were conducted. …”
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Numerical Study of the Active Tendon Control of a Cable-Stayed Bridge in a Construction Phase by M. H. El Ouni, N. Ben Kahla

“…This paper investigates numerically the active tendon control of a cable-stayed bridge in a construction phase. A linear Finite Element model of small scale mock-up of the bridge is first presented. …”
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Design and analysis of electromagnetic and mechanical structure of ultra-high-speed slotted solid rotor induction motor by Jiawei Yi, Zhihao Zhu

“…Then, by constructing a two-dimensional finite element model, the slot matching scheme and coil pitch are optimized, and the influence of different slot matching scheme and coil pitch on the output torque and harmonics of the motor is compared. …”
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A Comparative Study on Sensitivity-Based Damage Detection Methods in Bridges by Akbar Mirzaee, Reza Abbasnia, Mohsenali Shayanfar

“…These sensitivity-based methods utilize finite element model updating procedure and allow a wide choice of physically meaningful parameters leading to vast range of applications in damage detection. …”
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Orientation of propagating crack paths emanating from fretting-fatigue contact problems by Eugenio Giner, José Díaz-Álvarez, Miguel Marco, Mª Henar Miguélez

“…In this work, the orientation and propagation of cracks in fretting fatigue problems is analyzed numerically using the finite element method (FEM) and the extended finite element method (X-FEM). …”
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An all-in-one numerical methodology for fretting wear and fatigue life assessment by I. Llavori, M.A. Urchegui, W. Tato, X. Gomez

“…Then, the Linear Elastic Fracture Mechanics (LEFM) via eXtended Finite Element Method (X-FEM) embedded into the commercial finite element code Abaqus FEA has been employed to determine the crack propagation stage. …”
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STUDY ON LOAD CAPACITY CHARACTERISTICS OF THE FLEXIBLE WHEEL IN RING PRECISION HARMONIC DRIVE by ZHAO ZhiXin, WANG FangCheng, CHEN Chun, LIU ErYue, NIU JianHua, HUANG Lan

“…Further more experiments are performed to test the validity of this method. Then the finite element numerical calculations of the whole harmonic gear are obtained under no-load and rated load on the base of the model. …”
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Analysis of Modal and Vibration Response of Gearbox of Urban Rail Train by Chen Zhongwei, 2Lu Ning, Yang Jianwei

“…The results show that the theoretical and the natural frequency and modal test results similar formation to verify the validity of the modal obtained by the finite element method,the modal analysis and the results should be displayed to adjust the gear mesh frequency to avoid resonance frequency by adjusting the number of teeth or motor frequency. …”
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STUDY ON FATIGUE LIFE OF SUS304 STAINLESS STEEL SPOT WELDED JOINTS (MT) by ZHAO JiaWei, TAO YouRui, PEI JiaXing, ZHANG Yu

“…The accurate nugget diameter is obtained by CT scanning experiment, then the finite element model of the specimen is established, and the accuracy of the model is verified by optical strain measurement experiment. …”
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INFLUENCE OF BOUNDARY CONDITION ON COMPRESSIVE STABILITY PERFORMANCE OF STIFFENED THIN-WALL PANEL by ZHANG HaoYu, HE YuTing, ZHANG Fei, SHAO Qing, FENG Yu

“…Nonlinear finite element method（ FEM） was adopted to calculate the compressive stability of stiffened panel numerically. …”
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BASED ON THE NUMERICAL SIMULATION OF COLD ROLL-BEATING FORMING RESIDUAL STRESS RESEARCH by CUI LiMu, XIAO JiMing

“…According to basic principle of cold roll-beating, a finite element dynamic simulation model is established by ABAQUS software, the distribution of Mises force on the workpiece surface was obtained by dynamic simulation at different roll-beating depth. …”
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Comparison and Analysis of Calculation Methods for Rated Static Load of Planetary Roller Screw Mechanism by Kang Xinhong, Wei Peitang, Hu Rui, Zhou Pengliang, Du Xuesong, Zhu Caichao

“…The results show that the calculated results of the rated static load based on rolling bearings agree well with the finite element results. The improved calculation method reduces the average error from 17.03% to 8.90%, which can accurately calculate the rated static load of PRSM. …”
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STUDY ON CONTACT STRESS OF BEVELOID GEAR BASED ON FRACTAL THEORY by LIU YongPing, WEI Shuai, DONG ChangBin, WEI YongQiao, REN ZhongTao, LI ZeYu

“…This paper is based on the finite element theory, Hertz contact theory and fractal theory, the tooth surface contact strength of beveloid gear is compared and analyzed, the correctness of calculating the contact stress of beveloid gear by fractal contact model is verified. …”
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LIGHTWEIGHT-ORIENTED OPTIMIZATION DESIGN ON LEAF SPRING CLAMP OF HEAVY-TRUCK by ZHANG Bing, WANG ZongYan, LU ChunYue, WANG Ke

“…Based on the parametric finite element model of leaf spring clamp established by the adoption of ANYSYS Workbench,this article takes relevant parameters of the inner chamber as design variable,generates design parameter sample space through experimental design and confirms the optimization direction of structural parameters by acquiring the response surface of sample point from finite element solution as well as the conduction of sensitivity analysis on the design variable. …”
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Seismic Behavior Analysis of Damaged Steel Fiber-Reinforced High-Strength Concrete Frame Joints Strengthened by FRP by Wang Tingyan, Zhou Yun, Zhang Junwei

“…Then, the nonlinear finite element program was used to simulate the seismic behavior of FRP strengthened and unstrengthened steel fiber-reinforced high-strength concrete frame joints under low cyclic repeated load. …”
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Analysis of Vibration Characteristics of Hydraulic Excavator Device Under Flat Ground Conditions by Kailei Liu, Haifang Zhong, Maoze Chen, Jing Yang, Hongbin Qiang, Shaopeng Kang

“…Secondly, the modal analysis of the excavator arm is carried out by finite element simulation software, and the displacement and acceleration harmonic response analysis is carried out using the modal superposition method. …”
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ANALYSIS OF AERODYNAMIC LOAD ON FATIGUE STRENGTH OF THE HIGH-SPEED TRAIN CAR BODY by SONG Ye, WU PingBo, JIA Lu

“…According to the actual circumstance of high-speed train in line operation four aerodynamic load cases are set up: pneumatic passing each other open wire,single train passing through tunnel,two trains passing by in tunnel and cross wind.Four types of aerodynamic load condition will be applied to the numerical finite element model of high-speed train car body. Then carry the fatigue strength of aerodynamic load analysis on the finite element model. …”
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Adaptivity in Crashworthiness Calculations by Ted Belytschko, Sang-Ho Lee, I-Sheng Yeh, Jerry I. Lin, Chen-Shyh Tsay, James M. Kennedy

“…h-Adaptive finite element methods for nonlinear transient analysis by explicit time integration are described. …”
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