锻压技术

基于热力耦合原理的锻件快速成形

英文标题：Fast forming for forging based on thermal-mechanical coupling theory

作者：毛君张睿谢苗王珏

分类号：

出版年,卷(期):页码：2014,39(10):25-31

摘要：

基于热力耦合原理及虚功原理建立锻件快速成形的显式动力学模型,利用LS-DYNA软件仿真分析其成形过程中锻件的力学特性变化，分析不同工况下锻件成形过程中的动态特性变化。结果表明：随着打击能量的增加，锻件的应力应变及冲击载荷不断增加；相同打击能量、不同锻件初始温度下，随着锻造的温度升高，锻件的冲击载荷不断降低。分析结果将有助于准确获得锻件成形所需要的打击能量，以达到节能环保及降低对锻造设备冲击的目的。

Based on thermal-mechanical coupling theory and virtual work principle, the display mechanical model of forging process was established. The changes of the mechanical characteristics in the forging process and the dynamic characteristics in different working conditions of forging part were analyzed by LS-DYNA software. The results show that the stress and strain as well as impact load of the forging part increase gradually with the increase of hitting energy; the impact load of forging part decreases gradually when the forging temperature rises under the same hitting energy and different initial temperatures. The analysis results will help to obtain the required hitting energy of forging part forming accurately in order to achieve the objects of energy-saving and environmental friendly methods and reduce the impact on forging equipment as well.

基金项目：

辽宁省煤矿液压技术与装备工程研究中心开放基金资助项目（CMHT-201206）；辽宁省教育厅2013年创新团队项目（LT2013009）；2012年辽宁省教育厅一般项目（L2012118）

毛君（1960-），男，博士,教授，博士生导师

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