摘要
为了能够在实际生产中提高材料利用率和生产效率,借助DEFORM-3D有限元法模拟了TC4钛合金杯形件等温挤压成形过程,分析了不同的挤压速度对变形材料等效应力,应变分布的影响。结果表明:挤压速度为3mm/s时,等效应变数值较小,杯形件变形相对均匀。内壁圆弧过渡区域的应力、应变较大,容易出现开裂。
In order to improve the material uti- lization and production efficiency in the actual production, isothermal extrusion process of TC4 titanium cup-shaped workpiece is simulated with the DEFORM-3D finite ele- ment method. The effect of different extrusion speeds on the distribution of equivalent stress and strain of the work- piece is analysed. The results show that： when extruded at the speed of 3mm/s, the value of equivalent strain is small, and uniform deformation is achieved. The values of stress and strain are relatively high at inner arc transition zone, so cracking might occur.
出处
《航空制造技术》
北大核心
2013年第16期103-106,共4页
Aeronautical Manufacturing Technology
关键词
等温挤压
数值模拟
TC4钛合金
Isothermal-extrusion Numerical sim-ulation TC4 alloy
