摘要
分析发电机风道前托架的弯曲工艺,引入相对弯曲半径系数C,对传统板材压弯回弹预测公式进行修正,得到计算L截面型钢回弹的公式.利用有限元软件DYNAFORM对Q235材料的L截面型钢压弯模拟,对回弹进行预测,结合试验反推出C值,总结出C值和相对弯曲半径r0/H关系曲线.利用该曲线可以计算出所需的凸模圆角半径值,优化了模具设计和压弯工艺,为实际生产中的压弯模的设计提供参考,减少了试模次数,降低生产成本.
Bending process of generator air duct bracket was analysed,and the relative bending radius coefficient C was introduced to revise the traditional plate bending springback prediction formula to obtain springback prediction formula of L-section steel. The bending process of the L-section steel was simulated by DYNAFORM,and the springback was predicted. Value C was received by experiment,and the relationship between value C and relative bending radius r0/ H was summed up. The die radius needed can be obtained by the relation curve,then the design of the die and the bending craft was optimized,which is reference to the die design to reduce the experiment and the production cost.
出处
《大连交通大学学报》
CAS
2014年第3期88-91,共4页
Journal of Dalian Jiaotong University
关键词
回弹
压弯L截面型钢
有限元
相对弯曲半径系数C
springback
press bending L-section
FEA
relative bending radius coefficient C
作者简介
王大勇（1971-），男，副教授，学士，主要从事金属塑性成形技术的研究E-mail：wangdy@djtu．edu．cn．
