A mathmatical approach for modeling real hot forming process using physical simulation results
Recently, physical simulation has played a more and more important role in modeling hot forming process. However, difficulty still existed in simulating real hot forming process using physical simulation results directly for obvious difference in deformation history between physical simulation condition and real hot forming process. In this work, difference between physical simulation and real hot forming process was discussed and a mathmatical approach was proposed to model real hot forming process using physical simulation results. The main consideration of the method was to put physical simulation results into differential forms in order to take count in the contribution of deformation history (temperature and strain rate) at each incremental step. For the application of the approach, modeling of material flow stress, dynamical recrystallization including critical condition and recrystallziaton fraction, damage evolution and fracture criteria during real hot forming process were presented as examples, although experimental support was still needed for validation and further application.
hot forming mathmatical model physical simulation deformation history
Zhang Shi-hong Song Hong-wu Cheng Ming Wang Zhong-tang
Institute of Metal Research, Chinese Academy of Science, Shenyang 110016 China Shenyang Ligong University, Shenyang 110166 China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）