An Automated Approach for Integrating Geometric Modelling with Numerical Simulation

  • 邓春林
  • 创建于 2017-11-17

报告题目:An Automated Approach for Integrating Geometric Modelling with Numerical Simulation

报 告 人:Dr.Chongmin Song          

University of New South WalesAustralia

报告时间:11月17日(周 五) 14:00—17:00

报告地点:中国科学院计算地球动力学重点实验室会议室         

  中国科学院大学科研楼西楼106室

报告人简介:

Dr. Chongmin Song is a Professor at the School of Civil & Environmental Engineering, University of New South Wales, Australia. He obtained the degrees of Bachelor and Master of Engineering from Tsinghua University, China and the degree of Doctor of Engineering from the University of Tokyo, Japan. His current research interests are on the development of advanced numerical methods and their application to structural and geotechnical engineering. He is one of the two original creators of the scaled boundary finite element method.

报告简介:

Research on computational mechanics has transformed the way analyses and designs are performed in engineering practice. A vital component of the research is the automation of the complete process from geometric modelling to the numerical simulation of a structure. Recently, various numerical methods have been proposed to reduce the mesh burden in constructing finite element models. However, the process of numerical modelling and simulation is too often still a time-consuming and daunting task. Furthermore, numerical simulations based on digital images and STL models, which are increasingly popular owing to the rapid advance in digital imaging technologies and 3D printing, pose additional challenges.

In this talk, a technique to fully automate the numerical modelling and simulation process will be presented. The development is underpinned by our recent research on constructing general polytope (polygon in 2D and polyhedron in 3D) elements based on the scaled boundary finite element method. The polytope elements can have any number of faces, edges and vertices and offer a much higher degree of flexibility in mesh generation. In addition, stress singularities at crack tips and V-notches can be represented without enrichment or local mesh refinement. The polytope elements complement ideally the simple and efficient quatree/octree algorithm for mesh generation. Geometrical models provided as CAD, STL and digital imaging files can be handled in a unified approach. The whole process is fully automatic. The efficiency, robustness and some salient features of the proposed technique will be demonstrated. Potential research and applications of this novel technique will be discussed.