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首页> 外文会议>Asia-Pacific Symposium on Engineering Plasticity and Its Applications(AEPA 2004) pt.2; 20040922-26; Shanghai(CN) >Analytical Approach to Bursting Failure Prediction in Tube Hydroforming Based on Plastic Instability
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Analytical Approach to Bursting Failure Prediction in Tube Hydroforming Based on Plastic Instability

机译：基于塑性不稳定性的管件液压成形爆破破坏预测分析方法

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摘要

Bursting in tube hydroforming is an irrecoverable phenomenon by contrast with wrinkling and buckling. In this paper, analytical studies on onset of bursting failure under combined internal pressure and independent axial feeding are carried out. The diffuse plastic instability of a tube is employed to analytically predict the hydroforming limit. For an anisotropic tube material the incremental theory based on the Hill's quadratic plastic potential is also adopted. Through the above theory, influences of the plastic anisotropy on the limit strain and the bursting pressure are investigated. Finally, in order to validate the proposed approach, a series of finite element analyses are executed.
机译：与起皱和屈曲相比，管液压成型中的破裂是无法恢复的现象。本文对内压和轴向进给独立作用下的爆破失效进行了分析研究。管的弥散塑性不稳定性用于分析预测液压成形极限。对于各向异性的管材料，还采用基于Hill二次塑性势的增量理论。通过以上理论，研究了塑性各向异性对极限应变和爆破压力的影响。最后，为了验证所提出的方法，执行了一系列有限元分析。

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