| 机车用柴油机连杆杆身模锻成形的计算机模拟 |
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| 引用本文： | 胡忠,王纪武,王本一,朱利华,董正浩,苗永纯,谢配良,盛伟.机车用柴油机连杆杆身模锻成形的计算机模拟[J].清华大学学报(自然科学版),1998(8). |
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| 作者姓名： | 胡忠 王纪武 王本一 朱利华 董正浩 苗永纯 谢配良 盛伟 |
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| 作者单位： | 清华大学机械工程系，铁道部戚墅堰机车车辆工艺研究所 |
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| 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。
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| 关 键 词： | 连杆 模锻 计算机模拟 热力耦合 弹塑性有限元 |
Computer simulation of forging process of I shaped section of connecting rod for locomotive engines |
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| Abstract: | 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. |
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