双金属复合管水下爆炸成形有限元分析  

Finite element analysis of underwater explosive forming of bimetal composite pipe

作　　者：曹建斌 张周锁[1] CAO Jianbin;ZHANG Zhousuo(School of Mechanical Engineering,Xi an Jiaotong University,Xi an 710049,China)

机构地区：[1]西安交通大学机械工程学院,西安710049

出　　处：《焊接学报》2018年第2期61-65,131,共6页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(51275382)

摘　　要：水下爆炸复合工艺是实现异种金属管材高强度结合的一种先进生产方法,运用非线性有限元分析软件对双金属复合管水下爆炸成形过程进行数值研究.详细阐述了双金属管水下爆炸复合的安装工艺及其成形过程.基于ANSYS/LS-DYNA平台建立了水下爆炸复合成形的有限元模型,通过实例分析了复合动态过程、基衬管关键节点的位移、以及成形后复合管的应力应变分布.利用控制变量法研究水下爆炸复合主要工艺参数对复合管结合强度的影响规律.最后通过试验对数值计算结果进行验证.结果表明,有限元模型能够有效模拟双金属管水下爆炸复合过程.Underwater explosive composite technology is an advanced production method to achieve composite pipe of dissimilar materials.The nonlinear finite element software was used to simulate forming process of underwater explosion for bimetal composite pipe.The installation technology and forming process of underwater explosion composite for bimetal composite pipe wee expounded in detail.Finite element model of bimetal composite pipe by underwater explosive forming was established based on the platform of ANSYS/LS-DYNA.As an example,numerical simulation of underwater explosive forming process for bimetal composite pipe was carried out to analyze composite dynamic process,key node displacement of liner tube and base tube,and stress and strain distribution in composite pipe.The effects of main process parameters of underwater explosion composite on bonding strength of composite pipe was researched by the method of controlling variables.Finally,the numerical results were verified through experiments.The result shows that finite element model can effectively simulate the underwater explosion composite process of bimetal pipe.

关 键 词：双金属复合管 水下爆炸 有限元模型 结合强度 

分 类 号：TG456.6[金属学及工艺—焊接]