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角部先行起爆成形结晶器方管的数值模拟
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Indexed by:期刊论文

Date of Publication:2013-10-31

Journal:锻压技术

Included Journals:PKU、ISTIC、CSCD

Volume:38

Issue:5

Page Number:74-78

ISSN No.:1000-3940

Key Words:结晶器;爆炸成形;先行起爆;疲劳寿命

Abstract:为解决在水下爆炸成形制造方形连铸结晶器铜管时,由于铜管角部成形滞后直边贴膜,直边对角部形成挤压,造成角部铜管容易贴合不紧密而产生“隆起”的问题,提出一种角部炸药先行起爆的水下爆炸成形方法,并借助有限元模拟方法对不同起爆方案设计进行分析.结果表明:角部炸药先行起爆10,15和20μs时,可以消除方形连铸结晶器角部铜管的“隆起”,成形效果较理想,与先爆20μs的实际爆炸成形试验结果相符;同时,还可大大降低爆炸载荷对芯模角部的冲击,有利于在实际生产中提高芯模使用寿命,降低生产成本.依据疲劳寿命估算理论,先爆10μs时,效果最优,是同步起爆疲劳寿命的19倍.角部炸药先行起爆的水下爆炸成形方法为方形连铸结晶器铜管的生产提供了一种新加工技术.

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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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