Temperature-Dependence Mechanical Characteristics Investigation of Cu Wire and Corresponding High Strain Rate Plasticity Behaviors Enabled by Johnson-Cook Constitutive Model

IF 1.5 4区 工程技术 Q3 MECHANICS
De-Shin Liu, Po-Chun Wen, Z. Zhuang, Y. Chao, Pei-Chen Huang
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引用次数: 0

Abstract

The temperature dependence mechanical characteristics of 4N Cu wire with 25, 30, and 38 μm diameters are investigated via the utilization of micro-tensile tests. Measured data revealed that the concerned mechanical characteristics, Young's modulus and yield stresses, are significantly degraded under high testing temperature, and the variation of aforementioned characteristics degradation are almost linear proportional to the temperature increment. Trapezoidal and standard triangle loop formation of Cu wire is simulated based on the finite element method, the simulated looping profiles of Cu wires is compared to the Au wires and the Cu wire is regarded as the improved solution for the high loop height wire formation. Moreover, the Johnson-Cook constitutive model is utilized to describe the plasticity of Cu wire in accordance with the experimental data under different temperature level consideration. Accordingly, the comprehensive mechanical characteristics investigation of 4N Cu wire is systemically demonstrated and explored.
基于Johnson-Cook本构模型的铜丝温度依赖力学特性及高应变率塑性行为研究
利用微拉伸试验研究了直径为25、30和38 μm的4N铜丝的温度随温度变化的力学特性。实验数据表明,在高温下,杨氏模量和屈服应力等力学特性显著退化,且上述特性退化的变化几乎与温度的升高成线性关系。基于有限元法对铜丝梯形和标准三角形环形成形进行了模拟,将模拟的铜丝环形轮廓与金丝进行了比较,并将铜丝视为高环形高度成线的改进方案。根据不同温度水平下的实验数据,采用Johnson-Cook本构模型来描述铜丝的塑性。据此,对4N铜线的综合力学特性研究进行了系统的论证和探讨。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Mechanics
Journal of Mechanics 物理-力学
CiteScore
3.20
自引率
11.80%
发文量
20
审稿时长
6 months
期刊介绍: The objective of the Journal of Mechanics is to provide an international forum to foster exchange of ideas among mechanics communities in different parts of world. The Journal of Mechanics publishes original research in all fields of theoretical and applied mechanics. The Journal especially welcomes papers that are related to recent technological advances. The contributions, which may be analytical, experimental or numerical, should be of significance to the progress of mechanics. Papers which are merely illustrations of established principles and procedures will generally not be accepted. Reports that are of technical interest are published as short articles. Review articles are published only by invitation.
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