文献类型：期刊文献

英文题名：A procedure for predicting strength properties using small punch test and finite element simulation

作者：Zhong, Jiru[1];Xu, Tong[2];Guan, Kaishu[1];Szpunar, Jerzy[3]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]China Special Equipment Inspect & Res Inst, Beijing 100013, Peoples R China;[3]Univ Saskatchewan, Dept Mech Engn, Saskatoon, SK S7N 5A9, Canada

年份：2019

卷号：152

起止页码：228

外文期刊名：INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

收录：;EI(收录号：20190206356604);WOS:【SCI-EXPANDED(收录号:WOS:000459837400015)】；

基金：The authors are grateful to the Chinese Scholarship Council and General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (201510070) for providing financial support.

语种：英文

外文关键词：Small punch test; Finite element simulation; True stress-strain curve; Strength properties

摘要：Developing a universal approach for acquiring yield strength and ultimate tensile strength by small punch test (SPT) is a long-standing challenge. In this paper, a methodology is proposed to obtain strength properties of bulk materials from SPT results. It involves extracting true stress-strain curves from SPT data using iterative finite element simulation. Acquired curves show that initial yield stress cannot be reproduced. This is attributed to the inhomogeneous deformation of SPT specimens. Finite element simulations were then conducted on tensile tests with the extracted true stress-strain curves to obtain strength. Results indicate that predicted strength shows a convergent tendency with the times of iterative finite element simulation. An approach is proposed to process the predicted strength, based on data analysis. The acquired strength properties are in good agreement with those obtained by standard tensile testing. This is an entirely novel procedure that predicts reliable tensile properties via a single SPT run. It can be employed with confidence to cases for which standard tensile testing is impractical.