关键词: 大口径直缝焊管, 预弯, 有限元分析, 稳健性

Abstract:

To improve crimping forming quality, this paper investigated crimping which was simulated using the FE code ABAQUS and the FE model was validated experimentally. Based on this analysis, robustness design method based on stochastic model was used to obtain optimization design scheme, which considered the effects of uncertain factors such as material performance parameters on the forming quality. The research results show that the optimization design scheme can improve the product performance, and increase the reliability from 4.2% to 97.7% and ensure the product quality. Thus, the results herein provide an effective approach for crimping parameter design.

Key words: large diameter straight welded pipe, crimping, finite element analysis(FEA), robustness