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爆炸焊接驻点近区应变率分布规律计算
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Indexed by:期刊论文

Date of Publication:2002-11-28

Journal:爆炸与冲击

Included Journals:Scopus、EI、PKU、ISTIC、CSCD

Volume:22

Issue:4

Page Number:315-320

ISSN No.:1001-1455

Key Words:爆炸焊接;驻点;应变率

Abstract:为了认识爆炸焊接驻点近区材料的力学和热学行为,分析波状界面和绝热剪切带生成,采用理想流体对称碰撞模型沿流线研究了驻点近区的应变率分布规律,并推导出了驻点应变率的理论计算公式.通过数值与理论计算对爆炸焊接碰撞角、界面距离等因素对应变率的影响进行了讨论.计算结果表明,爆炸焊接中强烈变形集中在驻点附近区域,其应变率高达106~107s-1,拉压应变率的绝对值在驻点处达到最大;而剪应变在焊接界面上为零,其最大值出现在驻点的前方,为拉压应变率的约二倍.

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Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:力学与航空航天学院

Discipline:Engineering Mechanics. Applied and Experimental Mechanics. Biomechanics and Nanomechanics

Business Address:大连理工大学 A1区26号 力学系203室

Contact Information:yanhh@dlut.edu.cn 0411-84708397

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