有重叠区的多点分段成形可减缓强制变形区与过渡区交界处的曲率突变现象，但未完全消除剧烈的塑性变形。
The sectional forming method with overlapping area can restrict the variety of curvature, but the drastic distortion is not removed.
采用柔性垫层是抑制和消除多点模拉形过程中零件表面缺陷的重要措施。
Using flexible interpolator pad is an important way to suppress the part surface defect in stretch-forming process on multi-point tool.
集中载荷比分散载荷破坏作用大，应消除咬合高点，建立分布均匀的多点咬合接触。
The lean of cusp should be reduced . The abnormally high occlusal points should be deleted. The bite points should be well distributed.
结果表明：多道次多点模具成形与单工步多点模具成形相比改善了板材的受力状况，达到了消除变形集中的目的；
The simulation results show that the multi-step forming can improve the stress of sheet metal and avoid stress concentration;
结果表明：多道次多点模具成形与单工步多点模具成形相比改善了板材的受力状况，达到了消除变形集中的目的；
The simulation results show that the multi-step forming can improve the stress of sheet metal and avoid stress concentration;
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