| 考虑材料熔化潜热的高温高压本构 |
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| 引用本文： | 冉宪文,汤文辉,谭华,戴诚达.考虑材料熔化潜热的高温高压本构[J].物理学报,2006,55(6):2852-2855. |
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| 作者姓名： | 冉宪文 汤文辉 谭华 戴诚达 |
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| 作者单位： | (1)国防科技大学理学院技术物理研究所，长沙 410073; (2)国防科技大学理学院技术物理研究所，长沙 410073;中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，绵阳 621900; (3)中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室，绵阳 621900 |
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| 摘 要： | 本文在修正的SCG模型基础上，提出了一种考虑了熔化潜热的高温高压本构.该本构所给出的铝的剪切模量的变化分为三个阶段：加工硬化，温度软化和熔化，并在完全熔化点处变为零.并且在前两个阶段，计算的结果与修正的SCG模型所给出的剪切模量的差别不超过4%，这一差别是在动高压实验误差范围之内的，在熔化区所给出的剪切模量与现有的实验数据相符合.
关键词：
剪切模量
熔化潜热
修正的SCG模型
动高压实验
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| 关 键 词： | 剪切模量 熔化潜热 修正的SCG模型 动高压实验 |
| 文章编号： | 1000-3290/2006/55（06）/2852-04 |
| 收稿时间： | 7/3/2005 12:00:00 AM |
| 修稿时间： | 2005-07-032005-09-29 |
High temperature high pressure constitutive relation of materials by considering fusion enthalpy |
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| Ran Xian-Wen,Tang Wen-Hui,Tan Hua,Dai Cheng-Da.High temperature high pressure constitutive relation of materials by considering fusion enthalpy[J].Acta Physica Sinica,2006,55(6):2852-2855. |
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| Authors: | Ran Xian-Wen Tang Wen-Hui Tan Hua Dai Cheng-Da |
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| Institution: | 1. Physical Institute of Technology, College of Science, National University of Defense Technology, Changsha 410073, China;2. Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academic of Engineering Physics, PO Box 919-111, Mianyang 621900, China |
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| Abstract: | Basing on the modified SCG model, a high temperature and high pressure constitutive relation of materials is proposed. The change of shear modulus of aluminum with pressure as deduced from this model shows three stages: machining indurations, high temperature inteneration and melting, and turning to zero at the point of complete melting. In the first two stages, the difference in results of modified SCG model and our model is no greater than 4%, which is in the error range of dynamic experiments, and the shear modulus given by this model is in good agreement with experimental data at the point of 145GPa. |
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| Keywords: | shear modulus fusion enthalpy modified SCG model dynamic experiment |
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