中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
异种不锈钢激光焊缝材料的动态本构关系

文献类型:期刊论文

作者魏延鹏; 吴先前; 虞钢; 段祝平
刊名爆炸与冲击
出版日期2011-09-25
卷号31期号:5页码:455-462
通讯作者邮箱osborny@msn.com
关键词固体力学 Johnson-Cook本构方程 SHTB 焊缝材料
ISSN号1001-1455
其他题名Constitutive equations for dissimilar stainless steels laser-welded materials
产权排序中国科学院力学研究所非线性国家重点实验室;中国科学院力学研究所水动力学与海洋工程重点实验室;中国科学院力学研究所激光与先进制造工艺实验室
通讯作者魏延鹏
中文摘要利用等应变测试法获取了304及316L激光焊接焊缝材料的准静态应力应变曲线,发现焊缝材料具有明显的细晶硬脆化趋势。利用SHTB技术对304、316L及焊接构件材料高温动态力学性能进行了研究。根据动态实验数据对不锈钢304及316L母材应变率及温度相关的Johnson-Cook本构方程参数进行了拟合。利用LS-DYNA建立了SHTB动态拉伸实验数值模型,发现了在应力波加载初始阶段由于结构效应及材料阻抗不匹配引起的应力不平衡现象。通过动态实验与数值模拟相结合的方法确定了焊缝材料的应变率相关本构参数。
英文摘要The stress-strain curves of the 304 and 316L stainless steels laser-welded materials were obtained by using the equal strain test method.And obvious hardening behaviors due to the tiny crystal of the welded materials were noticed.The dynamic mechanical properties of the 304,316L and welded structure materials were experimentally investigated by SHTB at elevated temperature.Constitutive parameters for the 304 and 316L stainless steels were fitted according to dynamic experimental data.The numerical simulation for the welded structure materials in SHTB test was carried out by LS-DYNA and it was found that stress in the structure materials was non-equilibrium at the early loading stage due to material impedance difference.The strain rate-related parameters in Johnson-Cook constitutive equations for the welded materials were obtained by combining numerical calculation and experimental data.
学科主题力学
收录类别EI ; CSCD
资助信息国家自然科学基金项目(10832011)~~
原文出处http://epub3.cnki.net/grid2008/brief/detailj.aspx?filename=BZCJ201105003&dbname=CJFQ2011
语种中文
CSCD记录号CSCD:4392310
公开日期2012-04-01
源URL[http://dspace.imech.ac.cn/handle/311007/44985]  
专题力学研究所_非线性力学国家重点实验室
推荐引用方式
GB/T 7714
魏延鹏,吴先前,虞钢,等. 异种不锈钢激光焊缝材料的动态本构关系[J]. 爆炸与冲击,2011,31(5):455-462.
APA 魏延鹏,吴先前,虞钢,&段祝平.(2011).异种不锈钢激光焊缝材料的动态本构关系.爆炸与冲击,31(5),455-462.
MLA 魏延鹏,et al."异种不锈钢激光焊缝材料的动态本构关系".爆炸与冲击 31.5(2011):455-462.

入库方式: OAI收割

来源:力学研究所

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