单道次渐进成形锥形件壁厚均匀临界成形角的研究

基于ANSYS/LS-DYNA分析平台构建单道次渐进成形锥形件的有限元模型,利用数值模拟和实验方法研究单道次渐进成形锥形件的壁厚均匀临界成形角。通过研究不同成形角的锥形件,获得所用板料的壁厚均匀临界角,并分析了坯料厚度和轴向进给量对壁厚均匀临界角的影响。数值模拟结果和实验结果均表明,随着坯料厚度增大,壁厚均匀临界成形角逐渐增大,轴向进给量对壁厚均匀临界成形角影响基本无影响。

Research on critical forming angle of uniform thickness in single-path incremental forming for conical part

On the basis of ANSYS/LS-DYNA,the finite element model of single-path incremental forming of conical part was constructed.Adopting the method of numerical simulation and experiment,critical forming angle of uniform thickness in single-path incremental forming of conical part process was researched.By investigating the different forming angles of conical parts,the critical forming angle of uniform thickness of the used blank was obtained,and the influences of the blank thickness and the spindle feed step on the critical forming angle of uniform thickness were analyzed.Both numerical simulations and experiments show that the critical forming angle of uniform thickness increases gradually with the increasing of the blank thickness,while the spindle feed step has little influence on the critical forming angle of uniform thickness.