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| Reliability analysis of ultimate compressive strength for stiffened composite panels |
| Received:September 24, 2015 Revised:December 22, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201606009 |
| KeyWord:structural reliability stiffened composite panels ultimate compressive strength progressive failure analysis buckling |
| Author | Institution |
| 赵维涛 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室, 沈阳 |
| 樊世兵 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室, 沈阳 |
| 刘炜华 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室, 沈阳 |
| 史雪妍 |
沈阳航空航天大学 辽宁省飞行器复合材料结构分析与仿真重点实验室, 沈阳 |
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| Abstract: |
| The progressive failure analysis method is utilized to predict ultimate compressive strengths of stiffened composite panels based on the user subroutine of Abaqus software in this paper.Numerical examples are shown that the relative errors of ultimate compressive strengths obtained by using the proposed method and the experimental data are 2.53% and 1.68% for samples 1 and 2 respectively.To reduce the computational efforts in the process of reliability evaluation,the relationship between the buckling load and the ultimate compressive strength is used to establish the performance function,only one time the ultimate compressive strength is analyzed in the process of reliability evaluation by using the proposed method.Numerical examples are shown that the relative errors of the proposed method and the classical reliability method are -1.04% and -1.01% for samples 1 and 2 respectively,the ratios of the proposed method to the classical reliability method are only 1.18% and 1.66% for samples 1 and 2 in terms of the total computational time. |