Novel Flat-SPT Method for Obtaining Mechanical Properties of Ductile Materials and Its Application

被引：0
作者：
Zhou T. [1 ]
Cai L. [1 ]
Han G. [1 ]
机构：
[1] Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province, Southwest Jiaotong University, Chengdu
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2024年 / 60卷 / 04期
关键词：
energy density equivalence; mechanical properties; power-law materials; small punch test; stress-strain relationship;
D O I：
10.3901/JME.2024.04.316
中图分类号：
学科分类号：
摘要：
For homogeneous, isotropic and power-law hardening discs under normally loading at its center by a small punch with a flat indenter, based on the energy density equivalence, a novel elastic-plastic model to describe the relationship between the disc dimensions, power-law parameters, load and displacement is proposed, and a flat small punch test(F-SPT) method for obtaining the stress-strain curves and mechanical properties of the materials is developed. Numerical verifications are carried out using 48 kinds of materials with various combinations of elastic modulus, yield strength, and hardening exponent, and F-SPT are conducted for ten metallic materials. The results show that the stress-strain curves obtained by this method are consistent with those preset in finite element analysis and those obtained by uniaxial tensile tests. In addition, the elastic modulus, yield strength and tensile strength obtained by the novel method are in agreement with the uniaxial tensile test results. © 2024 Chinese Mechanical Engineering Society. All rights reserved.
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页码：316 / 325
页数：9
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