Professor Huoming Shen graduated from Southwest Jiaotong University with B. S. and M.S. degree in 1990 and 1993, respectively, and received his PhD degree in Bridge and Tunnel Engineering in 2005. He became a full professor in 2006. Prof Shen has been awarded with a distinguished teacher of “Tianfu Ten Thousand Talents Program” in Sichuan Province and outstanding teacher in teaching and education of Sichuan Province. Prof. Shen’s research interests includes fretting wear, structural vibration and control, sound radiation,vehicle-bridge coupling，multi-field coupling contact mechanics. Because of his outstanding achievements in teaching and scientific research, Prof. Shen undertakes many Part-time Academic Jobs, such as Member of the Teaching Steering Committee of Mechanics Basic Courses of the Ministry of Education, Vice Chairman of the Innovation and Entrepreneurship Branch of the Chinese Higher Education Society, Executive Director of the Sichuan Mechanics Society, Chairman of the Southwestern Association of Basic Mechanics and Engineering Applications, and the Sichuan Higher Education Society Chairman of the Construction and Research Committee. He has presided over and researched 5 National Natural Science Foundation of China, 973 sub-projects, presided over 3 provincial and ministerial projects, presided over 12 other various projects, and published more than 100 scientific research papers. He is the leader of the national teaching team of engineering mechanics, the host of the national excellent course of engineering mechanics, the host of the national excellent resource sharing course of engineering mechanics, and the host of the national excellent online open course of engineering mechanics People, published 10 teaching aids (1 national planning textbook for the Eleventh Five-Year Plan, 2 national planning textbooks for the 12th Five-Year Plan), published more than 30 teaching research papers.

Prof. Huoming Shen and Dr. Juan Liu

Fretting wear occurs frequently in the engineering field, such as joint prosthesis, bogie center plate. Besides, with the development of coating materials in tribology field and increasing appearance of complex environment(i. e. thermal-electric couplling), it is very important to quantitative study the fretting behavior of coating materials. But the study focused on it is limited especially for thefretting mechanism in complex environment. Based on the Semi-Analytical Method(SAM) and wear criterion, a new fretting wear model can be developed. This model can be used to solve the fretting problems of coating materials involving actual cases including consideration of the frictional heating and multi-physics field coupling. And it can provide some theoretical guidance for the actual cases, such as the fretting problems of bogie center plate involving heat, fretting problems of electron apparatus in thermal-electric field.

Furthermore, a Semi-Analytical discrete-element method(SA-DEM) wear model is

developed to study the third body problem in fretting and fretting wear in miroscale. Some theoretical guidance for fretting mechanism of granular materials can be given.

Dr. Bo Zhang

In our study, we integrate the advantages of differential quadrature method (DQM) and finite element method (FEM) to construct a C1-type four-node quadrilateral element with 48 degrees of freedom (DOF) for strain gradient Mindlin micro-plates. This element is free of shape functions and shear locking. The C1-continuity requirements of deflection and rotation functions are accomplished by a fourth-order differential quadrature (DQ)-based geometric mapping scheme, which facilitates the conversion of the displacement parameters at GaussLobatto quadrature (GLQ) points into those at element nodes. The appropriate application of DQ rule to non-rectangular domains is proceeded by the natural-to-Cartesian geometric mapping technique. Using GLQ and DQ rules, we discretize the total potential energy functional of a generic micro-plate element into a function of nodal displacement parameters. Then, we adopt the principle of minimum potential energy to determine element stiffness matrix, mass matrix, and load vector. The efficacy of the present element is validated through several examples associated with the static bending and free vibration problems of rectangular, annular sectorial, and elliptical micro-plates. Finally, the developed element is applied to study the behavior of freely vibrating moderately thick micro-plates with irregular shapes. It is shown that our element has better convergence and adaptability than that of Bogner-Fox-Schmit (BFS) one, and strain gradient effects can cause a significant increase in vibration frequencies and a certain change in vibration mode shapes.