宇航材料工艺2012，Vol.42Issue(1)：35-37,3.
整体壁板结构弹塑性弯曲中性层位置分析
Analysis of Neutral Surface Position of Integrally Stiffened Panel in Elastoplastic Bending
赖松柏 1陈同祥 1于登云2
作者信息
- 1. 中国空间技术研究院,北京100094
- 2. 中国航天科技集团公司,北京100037
- 折叠
摘要
Abstract
The position of neutral surface of integrally stiffened panel is important for parameter design and structural analysis, together with bending process. In engineering, the centriod is treated as the position of integrally stiffened panel in elastoplastic bending, and there is large error for this method. In this work,a new method for the calculation of neutral surface position is set up, considering the strain-hardening of a material, and the result is compared with that of numerical simulation. Result shows: the neutral surface of integrally stiffened panel in elastic bending lies in the centriod, and it moves to skin side as bending radius getting smaller in plastic bending; when the relative bending radius is small (p/t≥10) , thinning of panel is ignorable, and neutral surface of stress and strain lie at almost the same position.关键词
整体壁板结构/弹塑性弯曲/塑性强化/中性层/数值仿真Key words
Integrally stiffened panel/Elastoplastic bending/Strain-hardening/Neutral surface/Simulation引用本文复制引用
赖松柏,陈同祥,于登云..整体壁板结构弹塑性弯曲中性层位置分析[J].宇航材料工艺,2012,42(1):35-37,3.
