论文标题
低熔体金属的温度和速率构成行为
Temperature and Rate Dependent Constitutive Behaviors of Low Melt Field's Metal
论文作者
论文摘要
低熔点金属（例如田间的金属和凝胶）越来越多地用作刚度调节软材料和设备的过渡阶段。然而，关于熔点低于100度的金属的基本本构行为存在知识差距。这封信报告了在各种温度和应变速率下田地金属之间的应力应变关系。该金属的构成行为已被系统地研究，金属的熔点是最低的。实验结果表明，与大多数工程金属和合金的应变性行为相反，田间的金属表现出应变性的行为。在这封信中设计了一个修改的约翰逊 - 库克模型，以描述田野金属的本构行为。所提出的金属将促进由田间金属组成的功能材料和结构的设计和分析。
Low melting point metals such as Field's metal and gallium are increasingly used as transition phases in stiffness-tuning soft materials and devices. Nevertheless, there is a knowledge gap on the fundamental constitutive behaviors of metals with melting points below 100 degree. This letter reports the stress-strain relationships of Field's metal at various temperatures and strain rates. This metal has the lowest melting point among metals whose constitutive behaviors have been studied systematically. Experimental results indicate that Field's metal exhibits a strain-softening behavior, in oppose to the strain-hardening behaviors of most engineering metals and alloys. A modified Johnson-Cook model is devised in this letter to describe the constitutive behaviors of Field's metal. The proposed metal will facilitate the design and analysis of functional materials and structures consisting of Field's metal.
