Winthrop Professor, Department of Mechanical Engineering

University of Western Australia

Perth, WA6009, Australia

  时  间：2019年3月18日 周一 15:00

  地  点：工学院力学楼434室

  主持人： 王建祥 教授

内容简介：

Strength of Materials (SM) and Linear Elastic Fracture Mechanics (LEFM) are two separate mechanics studies, and only applicable to brittle homogeneous materials. Currently, there are many errors and misinterpretations in composite property measurements and their design applications.

A recent progress in fracture modelling at University of Western Australia is explained. A simple closed-form non-LEFM solution is obtained, which contains only the tensile strength f_t and composite structure measurement (layer thickness G for carbon fiber composites, grain size G for ceramics and rock, aggregate size d_max for concrete, etc.). University students and practical engineers can easily use the fracture strength model to analyze those aforementioned composite systems with common Excel Spreadsheets.

Probably, the most famous non-LEFM model for brittle heterogeneous solids is the Size Effect Law (SEL) from 1984 to now. SEL contains 5 different equations with more than 20 different curve-fitting parameters. Is it possible that the single closed-form solution containing only f_tand G can do all the jobs of 5 SELs?

The answer is YES!

报告人简介：

BE – Northeastern University, 1982；PhD – Sydney University 1988；Postdoc – ETH –Zurich 1989；University of WA – 1992 – Now；President of Australian Fracture Society 2006 – 2008；Research Interests: Fracture modelling of size effect and non-LEFM。