Transactions of Materials and Heat Treatment

Title：Forming stability and numerical simulation of creep forming for 7475 aluminum alloy integrally stiffened panel

Authors： WU Yang ZHENG Ying DENG Yun-lai ZHANG Jin

Unit： Central South University Hunan Communication Polytechnic

KeyWords： aluminum alloy integrally panel creep forming high ribs

ClassificationCode：TG306;TG146.2+1

year,vol(issue):pagenumber：2013,38(6):56-61

Abstract：

To prevent collapse of the high ribs for the integrally panel is a key technology for creep forming. Integrally stiffened panel with single curvature was used for the autoclave test, and ABAQUS / Standard was applied to simulate the forming process of creep forming. The right model can be proved by contrasting experimentation and simulation results. The distributions of the stress and strain were analyzed and the critical buckling stress formula was put forward. The optimization of the fixture forming was designed for the buckling defects so that the critical buckling stress was four times larger than it was before, the largest lateral displacement was cut from 1.4mm to 0.2mm. As a result, the panel defects can be optimized obviously.

Funds：

国家重点基础研究发展计划(973)项目(2010CB731700)

Reference：

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