Study on experiment and finite element modelling of small punch test

2nd International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料工程

Zhang, Xianlong^1 ; Ding, Zhaonan^1 ; Chen, Yuguang^1 ; Zhang, Liqing^1 ; Zhang, Chonghong^1

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China^1

关键词: Complex stress state;    Empirical formulas;    Finite element modelling;    Finite element simulations;    Research fields;    Revised modeling;    Small punch test;    Systematic study;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/544/1/012051/pdf
DOI  :  10.1088/1757-899X/544/1/012051

来源: IOP

【 摘 要 】

The small scale specimen techniques have been a fast-growing research field for the past three decades. Small punch test is the most commonly used small specimen test technology and numerous mechanical properties are obtained from the test. Due to the highly complex stress state of the sample during the experimental process, many empirical formulas are used to obtain mechanical properties of the specimen. The curve obtained by finite element modelling of the small punch test is quite different from that obtained from the experiment, this paper present a systematic study on the problem. A revised model is proposed to solve the issue and we conclude that the rod must be modelled in the finite element simulation and the deformation of the rod is the causes of the misaligned.