摘要
用ＭＡＲＣ／Ａｕｔｏｆｏｒｇｅ程序对二辊斜轧穿孔时圆管坯在穿孔准备区的轧制过程进行了三维弹塑性热－力耦合分析，得到了应力、应变场温度分布，证实了物理模拟实验得到的变形强度沿管坯断面的Ｗ形分布形态并详细分析了Ｗ形分布的成因；澄清了孔腔形成理论上的一些分歧并发现了新的应力分布形态；管坯中心存在着较大的正值静水压力．
With the aid of FE code MARC/Autoforge, a thermo-mechanical analysis of the tube round during two-roll rotary rolling process was studied. From the simulation, the field of strain and stress and the distribution of temperature are respectively obtained. The W-shaped distribution pattern of deformation on the longitudinal section of the round, which was obtained from physical simulation experiments, is further verified and the reason causing the W-shape is discussed in detail. Some divergences of views in the mechanism of center-crack forming are clarified, and a new distribution feature is discovered. The hydrostatic pressure in the center of the round is of positive larger value.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2000年第1期52-55,共4页
Journal of University of Science and Technology Beijing
关键词
斜轧
温度场
数值模拟
热-力耦合分析
实心坯
rotary rolling: strain and stress: temperance distribution: 3-D coupled thermo-mechanical FE simulation
