|
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.
|
|
基金项目：
|
|
河北教育厅科学技术研究计划资助项目(990230)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]顾维藻,神家锐.强化传热[M].北京:科学出版社,1990.1-6.
[2]刘吉普,文美纯.螺纹槽换热管的滚轧加工及力学性能的研究[J].机械工程师,2000,(11):45-46.
[3]王秀伦.螺纹滚压加工技术[M].北京:中国铁道出版社,1990:20-32.
[4]孙希延,施浒立,纪元法,等.板料拉深成形数值模拟关键算法的比较[J].锻压技术,2006,31(2):19-21.
[5]黄志超,包忠诩,周天瑞.金属成形三维有限元网格重划技术研究[J].锻压技术,2004,29(4):35-39.
[6]姜伟.螺旋槽管材滚压成型的数值模拟及实验研究[D].秦皇岛:燕山大学,2004.
|
|
服务与反馈：
|
|
【本网站尚未开通全文下载服务】【加入收藏】
|
|
|
|
