摘要
针对厚度为0.8mm,坯料直径为140mm的AZ31B镁合金板材的成形性能进行了有限元数值模拟.在温度为200℃、压边力为8kN、拉深速度为0.3mm/s的情况下,模拟了坯料成形过程中厚度的变化和成形规律,并进行了系统的分析.结果表明,凸模圆角部分是整个拉深件强度最薄弱的地方,减薄最大,是破裂危险区;凹模圆角部分容易发生破裂和起皱;法兰部分通常会发生增厚现象,同时是容易起皱的区域;筒底部分和侧壁部分在成形过程中厚度变化不大.
The numerical simulation for magnesium alloy AZ31 B sheets with thickness of 0. 8mm and diameter of 140mm is carried cut to investigate the formability. Under the conditions with the temperature of 200℃, the blank holder force of 8kN, the deep drawing speed of 0. 3mm/s, the systematic analysis of the thickness change and forming rule for the simulation process of the blank is done. The result shows： The punch -nose radius is the most unsubstantial part for the intensity of the entire deep - drawing part and the thinnest part, it is the danger for the break; It is easy to happen break and wrinkle of the die profile radius part; It is often arises thicken nomenon in flange part and at the same time it is easy to occur wrinkle ; The parts of the bottom and side have change of the thickness during forming process. zone phelittle
出处
《哈尔滨理工大学学报》
CAS
2006年第1期46-50,共5页
Journal of Harbin University of Science and Technology
基金
哈尔滨市科技攻关项目(2005AA2CG029)
关键词
AZ31B镁合金
拉深成形
厚度变化
成形规律
magnesium alloy AZ31 B
deep - drawing process
thickness change
forming rule
