The results showed that enwrapping dimple is main style produced in the multi-point stretching process, the dimples can be suppressed effectively when elastic cushion was used.
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- 研究结果表明:多点拉形工艺中的压痕主要分为包络式和凹凸式压痕;采用弹性垫技术能够有效抑制压痕的产生;