Thermo-mechanical FEM Analysis on Crack Prediction of Solidified Shell in Funnel-Shaped Mold
In this paper, a 3-dimensional mathematical model has been developed for the thermo-mechanical coupled analysis of the solidification process of carbon steel in funnelshaped mold using thermo-elastic-plastic finite element method (FEM). The major application of the model is to perform computations of temperature, stress and longitudinal cracking index (LCI) variations in shell. The effects of casting speed on stress and LCI are discussed. The results show that the temperature at the thin slab off-corner of wide face is higher than the temperature at the center of the wide face and narrow face, the temperature history at the thin slab off corner appears two plateaus at 280mm and 840mm below meniscus, and the peak stress of solidification shell occurs at the region of funnel edge, where the shell has high cracking susceptibility. The LCI is high at the wideface center, funnel edge and off-corner of thin slab wide face. Increasing casting speed within certain range can decrease the LCI of original shell and reduce the possibility of longitudinal crack.
finite element method crack prediction computer simulation continuous casting funnelshaped mold
Jin Xin Ren Tingzhi Guan Jie
School of Mechanical Engineering Yanshan University Qin huangdao, China China National Heavy Machinery Research Institute Xian, China
国际会议
张家界
英文
160-163
2009-04-11（万方平台首次上网日期，不代表论文的发表时间）