Effect of strain rate on ductile fracture of advanced high strength steels
The determination of the effect of strain rate on ductile fracture is particularly challenging in sheet materials where fracture occurs in the post-necking range. The stress, strain and strain-rate fields become highly heterogeneous in that range and a hybrid numerical-experimental approach is required to identify the effect of strain rate on the strain to fracture. Two new dynamic tensile testing techniques for sheet metal are presented. The first includes a load inversion device to perform basic ductile fracture experiments on flat specimens with circular cut-outs at strain rates of the order of 1000 per second.
impact ductile fracture advanced high strenght steel SHPB strain rate
Matthieu Dunand Christian C. Roth Dirk Mohr
Department of Mechanics,Ecole Polytechnique,Palaiseau 91128,France;Impact and Crashworthiness Lab,MI Department of Mechanics,Ecole Polytechnique,Palaiseau 91128,France
国际会议
北京
英文
1-1
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）