材料动态变形中的绝热剪切带研究现状

索涛; 汪存显; 杭超; 明璐

doi:10.13433/j.cnki.1003-8728.2016.0101

材料动态变形中的绝热剪切带研究现状

doi: 10.13433/j.cnki.1003-8728.2016.0101

1.
西北工业大学航空学院, 西安 710072

基金项目:

国家自然科学基金项目(11522220,11272267)资助

详细信息

作者简介:
索涛(1979-),教授,博士生导师,研究方向为发动机包容性与材料高温高应变率耦合作用下的力学行为,suotao@nwpu.edu.cn

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- 被引次数: 0
出版历程
- 收稿日期: 2014-06-06
- 刊出日期: 2016-01-05

The Research Status of Adiabatic Shear Band in Dynamic Deformation

1.
School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 对材料动态变形中的绝热剪切带研究现状进行了大致的总结。从绝热剪切产生机理和失稳判据、剪切带内微观织构、实验技术研究与发展与数值模拟四个方面对目前的研究进行了总结与比较,认为热粘塑性本构关系应该考虑微观结构变化及材料的应力状态,才能够有效地分析微观结构变化对宏观变形局域化的影响;绝热剪切带内部组织结构和微观结构变化的研究仍旧存在不足,绝热剪切带微观组织的演化进程不够明确;数值模拟技术考虑的影响因素不够全面等。对绝热剪切带的发展趋势提出了自己的见解。
- 绝热剪切 /
- 热粘塑性本构关系 /
- 演化进程 /
- 数值模拟
Abstract: The paper roughly summarized the research status ofadiabatic shear band in dynamic deformation. From four aspects of the mechanism of adiabatic shear and instabilitycriterion, microscopic texture of adiabatic shear band,experiment techniques and numerical simulation research,the current study and development are summarized and compared. The paper considered that the thermo visco plastic constitutive model should consider the change of microstructure and the state of stress, then it can effectively analyze the impact onmacroscopic deformation localized by the change of microstructure. Secondly, the insufficient sections still exist in the aspect of microscopic texture and microstructure change, the evolution process of the microscopic texture in adiabatic shear band have not been definited, the influence factors which considered in the numerical simulationtechniques are also not comprehensive enough. At last, the paper put forward the own views of the trend on adiabatic shear band.
- adiabatic shear /
- evolution process /
- numerical simulation /
- thermovisco plastic constitutive model

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