Abstract:

Based on the same stress and strain state between stamping edge tensile and simpleten siletest,amodified simple tensile test was proposed to researchon effect of sheared burronde formation capacity of high strength steel stamping edge.The test shows that the trend of the deformation capacity of stamping edgeis decreasing with anincrease of burr height.It is easily explained the reason why splitting on stamping edge appearing before deformation reachesits normal deformation capacity.The numerical analysis approach for spliton stamping edge was proposed to solve the problem of the traditional method failing to predicted gefractureaccurately.Furthermore,the specialnumerical analysis software was researched and developed.It is confirmed that the numerical analysis approach is both feasible and effective by analyzing on automobile exhaust pipe support flanging process.

Key words: material synthesizing and processing, high strength steel, sheet forming, edge split, sheared burr