|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Case Study of A36 Steel Plate
||Ramon M. Martinez, Veronica Livescu, Jillian P. Bennett, Carl M. Cady, James A. Valdez, Carl P. Trujillo
|On-Site Speaker (Planned)
||Ramon M. Martinez
The development of a proper flow stress model is essential in predicting material deformation behavior at high strain rates and temperatures. The present study addresses detailed experimental investigation of A36 steel plate carried out at varying strain rates and temperatures to determine parameters for modeling and simulation. Stress state is an important factor determining when fracture occurs; in particular, the stress triaxiality plays an important role in the tendency for ductile fracture. The Johnson-Cook model is used to capture rate-dependent plasticity and ductile damage, which can be used for impact and penetration problems. Digital image correlation was performed when applicable to verify the materials mechanical response. The true stress and strain relationship as well as the stress triaxiality factors as a function of failure strain were determined. The discussion will also address sample design/selection, as well as influence of microstructure orientation on material behavior.