摘要
利用ANSYS有限元分析软件中的LS-DYNA求解器,分别采用球形和带过渡圆弧的三角形滚压辊,对螺旋槽管材滚压成形过程进行了数值模拟,得到了应力和应变分布规律、金属变形流动规律以及滚压力大小。根据有限元计算结果,分析了不同辊型的滚压辊和螺旋槽管的主要结构参数对滚压力的影响规律以及螺旋凹槽处壁厚的变化规律。通过试验验证了用有限元法进行螺旋槽管材滚压成形过程数值模拟的可靠性,为确定滚压力和槽深之间的关系提供了必要的指导依据。同时,为进一步研究螺旋槽管在滚压过程中的力学性能奠定了一定的理论基础。
The ANSYS/LS-DYNA was applied to simulate numerically the roll-pressing process of spirally grooved tube by sphere roller and triangle roller with arc, and the distribution regulation of stress and strain, the regulation of metal flow and the value of roll-pressing force were obtained. Based on the results of simulation, the effect of different roller shape and main geometrical parameters of the tube on roll-pressing force and deformation of wall thickness was analyzed. The reliability of numerical simulation was proved by experiments, and the relation between roll-pressing force and corrugation depth was obtained as guidance. And it provides theoretic foundation for further study on mechanical characteristics during roll-pressing process of spirally grooved tube.
出处
《锻压技术》
CAS
CSCD
北大核心
2007年第3期42-45,共4页
Forging & Stamping Technology
基金
河北教育厅科学技术研究计划资助项目(990230)
关键词
数值模拟
螺旋槽管
滚压
滚压装置
finite element simulation
spirally grooved tube
rolling
roiling equipemnt
