Post-Bifurcation Behavior of Wrinkles in Sheet Metal Forming

金属板材成形中皱纹的分叉后行为

• 批准号: 8805748
• 负责人: Lawrence Lee
• 金额: $ 26.32万
• 依托单位: University of Notre Dame
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-08-01 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8805748&HistoricalAwards=false
• 关键词: Post; Bifurcation; Behavior; Wrinkles; Sheet

Sheet metal forming is a basic manufacturing process for the mass production of numerous commercial products. In sheet metal forming, wrinkling is a major type of failure which has been recognized for a long time but remains to be solved. Wrinkling may occur in any stage of a forming process including the springback stage. The acceptance of a sheet metal product depends on the final physical state which may be determined by a post-birfurcation analysis and a springback analysis. A post-bifurcation analysis describes the growth or decay of wrinkles after their initiation. This research will attempt to develop a general solution of the wrinkling problem including the post-bifurcation behavior of wrinkles.

钣金成型是大规模生产众多商业产品的基本制造工艺。 在金属板材成形中，起皱是一种主要的失效类型，人们很早就认识到这一点，但仍有待解决。 起皱可能发生在成形过程的任何阶段，包括回弹阶段。 金属板材产品的验收取决于最终的物理状态，这可以通过分叉后分析和回弹分析来确定。 分叉后分析描述了皱纹产生后的生长或衰减。 这项研究将尝试开发皱纹问题的通用解决方案，包括皱纹分叉后的行为。