GOALI/IUCP: A Stress Based Wrinkling Criterion and Its Experimental Verification

GOALI/IUCP：基于应力的起皱准则及其实验验证

• 批准号: 9713744
• 负责人: Jian Cao
• 金额: $ 15.25万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713744&HistoricalAwards=false
• 关键词: GOALI; IUCP; Stress; Based; Wrinkling

Sheet metal forming is one of the most fundamental manufacturing technologies used in the production of numerous goods including hundreds of automotive components, consumer appliances, and beverage cans. The occurrence of wrinkling on a part could be either acceptable or unacceptable based on the product specifications. The ability of predicting such behavior is essential for shortening the development cycle and reducing manufacturing cost. This research project will numerically and experimentally address the onset, post-buckling and secondary buckling behavior of thin sheets buckled into a wide range of wavelengths under in-plane compression with or without normal constraints. This research project may reduce the computation time of Finite Element Analysis by about eighty percent while accurately predicting the onset of wrinkling. The success of this project will be extremely beneficial to product and process development at early design stage. This is a collaborative research project between the University and an industrial partner.

钣金成形是用于生产众多商品的最基本的制造技术之一，包括数百种汽车零部件，消费电器和饮料罐。 根据产品质量标准，部件上发生的磨损可以是可接受的，也可以是不可接受的。 预测这种行为的能力对于缩短开发周期和降低制造成本至关重要。该研究项目将通过数值计算和实验研究在有或没有法向约束的面内压缩条件下，薄板在宽波长范围内屈曲的起始、后屈曲和二次屈曲行为。 这项研究项目可以减少大约百分之八十的有限元分析的计算时间，同时准确地预测的发病。该项目的成功将对早期设计阶段的产品和工艺开发非常有益。 这是大学和工业合作伙伴之间的合作研究项目。