Whole Field Strain Measurement of High Strength Steel under Plain Strain Condition

摘要：

Sheet metal undergoes different strain conditions during different forming processes. The investigation of mechanical properties under these conditions is very important in the forming techniques. Sheet metal is particularly liable to failure under plain strain state. Measure and investigate the necking strain under plane strain condition is a particularly important study for sheet formability forecasting. In this study, material behavior of DP780 high strength steel sheet under plain strain condition was studied. Conventional plane strain tensile tests were carried out on the MTS testing machine with a special designed specimen. A digital image correlation system was employed to measure the full-field strain distribution during plain strain tensile test. The strain evolution during deformation was obtained and investigated. The capability of the specimen for plane strain test was validated from the strain distributions. The necking strain and fracture strain of DP780 high strength steel sheet were determined from the strain field and strain history results.

关键词： Plain strain test Strain history Fracture High strength steel Digital image correlation

作者: CHEN Ke LIN Jian-ping SMITH Lorenzo M ZHOU Qing-wei

作者单位: College of Mechanical Engineering, Tongji University, Shanghai 201804, China Department of Mechanical Engineering, Oakland University, Rochester 48309, MI, United States SAIC Motor Corporation Limited, Shanghai 201804, China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 768-772

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）