摘要
连杆工字型杆身肋底是模锻成形中经常产生缺陷的部位。采用基于ＡＮＳＹＳ软件所开发的弹塑性热－力耦合有限元模拟系统，利用网格重划技术，对机车用柴油机连杆杆身截面模锻成形进行了弹塑性热－力耦合有限元模拟，得到了变形过程中的应力场、应变场及温度场的分布。根据变形过程中节点流动趋势，分析了折叠可能产生的原因和部位，并为确定合理的成形工艺方案和模具形状、提高成形质量和模具寿命提供了可靠的依据。
The defects are often generated on the rib of the I shaped section of connecting rod in hot metal forging. In this paper, the hot metal forging process of the rib of the I shaped section of the connecting rod which is used for the large power locomotive engines is numerically simulated by the thermal elasto plastic fully coupled FEM software with the remeshing technique developed under ANSYS. According to the flow tendency of the articles in the cross section of the billet during hot forging, the cause and position of fold produced is analysed. With the numerical simulation results of the distribution of stresses, strains and temperature, the rational forging process provideds the base for improving the forming quality and die life.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第8期46-49,共4页
Journal of Tsinghua University(Science and Technology)
基金
铁道部科研项目
关键词
连杆
模锻
计算机模拟
机车
柴油机
connecting rod
die forging
computer simulation
thermo mechanical coupled
elasto plastic finite element method
