Analysis of Anti-seepage Effect of Masonry Gravity Dam Repaired by Geomembrane by WANG Libo, CEN Weijun, ZHENG Changhai

“…In view of the seepage of the dam body and dam foundation of a dangerous masonry gravity dam,this paper puts forward the seepage repair scheme of laying geomembrane on the dam surface and strengthening the curtain of the dam foundation,calculates the seepage field of the dam under multiple working conditions by the finite element method for obtaining the distribution of the equal head line,the height of the seepage line,the seepage gradient and the seepage flow of the dam,and emphatically demonstrates and analyzes the anti-seepage effect of geomembrane and curtain.The results show that:The geomembrane on the upstream face of the dam can significantly reduce the water head,the position of the dam seepage line after laying with the geomembrane is low,and the seepage flow of the dam is small.The curtain after reinforcement of dam foundation also has a good anti-seepage effect,which effectively limits the seepage of dam foundation,and the seepage gradient of curtain is smaller than the allowable gradient.Therefore,it is reasonable and feasible to use geomembrane combined with curtain reinforcement to repair the seepage of masonry gravity dam.…”
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Analysis of the Effect of Shaft Angle on Dynamic Characteristic of the Split Torque Transmission System with Herringbone gear by Cao Jianfeng, Chen Zhigang, Chen Siyu, Tang Jinyuan

“…Then,the dynamics model of the motion of the system which consists of shafts,bearings,gear rotors and the process of gear mesh is established based on the finite element node modeling method. Finally,the dynamic response of the system is calculated based on rotor dynamics theory,and the dynamic load coefficients and dynamic transmission error are obtained under different shaft angles so as to indicate the effects of shaft angles on the dynamic characteristics. …”
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Dynamics Research of Double Cross Universal Joints based on Rigid-flexible Coupling by Li Junhu, Wang Weibing, Lou Laifeng, Wang Yipeng

“…Based on the rigid-flexible coupled multi-body dynamics theory,with software of three-dimensional solid design,on the basis of finite element software and multi-body dynamics software,the coupled dynamics simulation model of double cross universal joints is created. …”
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Research on Design Method of Bionic Tooth Profile High-torque Synchronous Pulley by Shuai Mo, Lijuan Shi, Zongxiang Yue, Xiaolin Cao, Yunsheng Huang

“…The tangent curve is optimized by using the finite element embedded optimization module， and finally the parameters of the tangent curve with the minimum uniform stress of the teeth are obtained. …”
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Experimental Analysis of Static and Dynamic Performance for Continuous Warren Truss Steel Railway Bridge in Heavy Haul Railway by Yiqiang Li, Xianlong Luo, Yeming Li

“…In order to study the mechanical properties of steel structure bridges after material deterioration and long-term loads, a continuous Warren truss steel railway bridge that has been in operation for nearly 30 years (built in 1996) is used as the research object, and a combination of field tests and finite element (FE) simulations are used to carry out research on its mechanical properties under different loads. …”
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Study on the Adaptability of Shield Tunnel Segments Orthogonal Crossing Grade III Loess Ground Fissure Section by Tao Yin, Zhen Cao, Sanqing Su

“…Taking the Xi’an rail transit line orthogonal crossing the ground fissure section as the engineering background, the structural properties and adaptability of the shield tunnel lining segment under the ground fissure environment are carried out. Using the finite element numerical simulation method, combined with the relevant model tests that have been carried out by predecessors, the damage characteristics of shield tunnel lining segment structure under the action of the ground fissure are revealed. …”
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Stress intensity factor solutions for CTS mixed mode specimen by F.V. Antunes, R. Branco, J.A.M. Ferreira, L.P. Borrego

“…A total number of 1120 cracked geometries were studied numerically with the finite element method and analytical solutions were fitted to the numerical predictions. …”
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FRACTURE CRITERION OF THE THEORY OF CRITICAL DISTANCE FOR NOTCHES by LIU XiaoMei, BIAN YongMing, LIANG YongCheng, LI AnHu

“…Whether the brittle fracture criterion of theory of critical distance is suitable for graphite plates with different shape notches was studied by means of analysis of finite element: including tensile specimens with U notches,blunted V-notch specimens of semi-circular bend,three-point bending specimens with single V-notch and compressed specimens of Brazilian disk.According to the theory of critical distance,the parameters of fracture toughness for two graphite materials were calculated by the calibrated characteristic distance and inherent strength and compared with the given values in the literature. …”
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Scaling Laws of Droplet Coalescence: Theory and Numerical Simulation by M. Irshad Khodabocus, Mathieu Sellier, Volker Nock

“…The twofold objective of the present contribution is to propose a simple theoretical framework which leads to an Ordinary Differential Equation, the solution of which predicts the different scaling laws in various limits, and to validate these theoretical predictions numerically by modelling the phenomenon in the commercial Finite Element software COMSOL Multiphysics.…”
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Structural Design and Performance Analysis of a Three-dimensional Braided Two-stage Reducer Box by Zhang Weiliang, Wang Xupeng, Ji Xiaomin, Tang Xinyao, Liu Fengfeng, Liu Mingjun

“…According to the braiding principle and the yarn movement law, the three-dimensional solid model of the braided box was established, and the finite element analysis of the three-dimensional and five-direction braided box was carried out. …”
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Mechanism of Ultrasonic Guided Wave Excitation and Sensing in Pressure Vessel Structures Under Boundary Condition Effects by Napoleon Kuebutornye, Zipping Wang, Jiazhen Zhang, Dongwei Shang, Qingwei Xia

“… This study proposes a finite element-based multiphysics simulation of ultrasonic guided wave (GW) propagation under pressure conditions in a pressure vessel structure (15 kg LPG cylinder) utilizing boundary conditions. …”
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Fatigue Life Analysis of Electric Vehicle Reducer Gears Based on Actual Load Spectrum by Zou Xihong, Zhi Chuanyin, Xiong Feng, Xi Shuaijie, Chen Yuanli, Xiang Gang

“…Combined with the finite element analysis model, the damage and life of the reducer gear are analyzed. …”
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RESEARCH ON MECHANICAL CHARACTERISTICS OF NEW MOBILE ROLLER BRACKET CONVEYOR by ZHANG DongSheng, HE JinLong, NI Xue

“…On the basis of dynamic simulation,static simulation analysis of the conveyor under different working conditions was carried out by using finite element software Ansys to obtain the maximum stress and strain,and the safety factor of each component was calculated to verify the structural rationality. …”
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Prediction and Analysis of Bending Fatigue Crack Growth Behavior of Spur Gear by Liu Xinbo, Zeng Xiaosong, Liu Yong

“…By using high frequency test bench,the fatigue tests are carried out on the gear,the gear fatigue the expansion path is got,and comparing with the results of finite element calculation results.Finally,the influence of different initial crack size,position and load on fatigue crack growth and fatigue life is analyzed.…”
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SIMULATION ANALYSIS OF IMPACT DYNAMIC RESPONSE OF A COAL PLOW BIT by KANG XiaoMin, WANG WeiChao

“…In this paper, the finite element simulation analysis method is used to conduct in-depth research on the dynamic response of the plow bit under impact. …”
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Structure Design and Performance Analysis for Direct-driving Automated Mechanical Transmission by Yu Xiao, Li Bo, Ge Wenqing, Li Zhengping

“…To shorten the transmit route of shift force,improve transmission efficiency,a kind of electromagnetic direct-drive transmission（ D-AMT） is proposed,in which the actuator could drive sleeve shift directly for shifting. The finite element analysis model is established in JMAG to optimize the structure of actuator,the math model of shifting,researched the shifting parameters of D-AMT is established,the influence factors of shifting is analyzed and the influence of shift parameters on shifting performance is researched. …”
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Thermo-Hydromechanical Coupling Responses Driven by a Central Heat Source in Unsaturated Soils by Wei Wang, Jingjing Liu, Jing Chen

“…The coupled calculation process was realized by the finite element method. The hydrothermal coupling characteristics of two cases of unsaturated kaolin clay were studied by using a self-developed test device, and the test results were compared with the numerical results. …”
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LOAD TRANSFER ANALYSIS IN BONDED-BOLTED HYBRID JOINTS by CHEN XiangMing, CHAI YaNan, YUAN Fei, YU Fei, CAO Su

“…A finite element method of the hybrid（ bonded/bolted） joints is developed,and load transfer is analyzed. …”
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Research on Meshing Stiffness and Bearing Performance of Logarithmic Modified Composite Roller Movable Tooth by Yali Yi, Lei He, Liang Xie, Shuang Zhang, Herong Jin, Zhengxiang Zhou, Yazheng Zhou

“…</italic> The influence of filling degree and different rollers on meshing stiffness is analyzed. The finite element method is used to compare and analyze the equivalent stress distribution of different rollers. …”
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ANALYSIS OF OIL PUMP STUCK PHENOMENON AND RESEARCH OF IMPROVED TECHNOLOGY by DU BaoJiang, YAN ShenLiang, ZHA Liang, YE QiHan, LI ShuangShuang

“…With the base of the outside gear engine oil pump,the paper built a method in finite element and theory analysis aiming at the oil pump machine manufacture stuck phenomenon. …”
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