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| Application of response surface method on structural reliability analysis of pin joint in composites |
| Received:March 31, 2015 Revised:September 12, 2015 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201605009 |
| KeyWord:composites reliability pin joint probabilistic strength analysis response surface method |
| Author | Institution |
| 张九民 |
中国航空工业集团公司 第一飞机设计研究院, 西安 |
| 顾汝佳 |
南京航空航天大学 航空宇航学院, 南京 |
| 李洪双 |
南京航空航天大学 航空宇航学院, 南京 |
| 夏爽 |
南京航空航天大学 航空宇航学院, 南京 |
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| Abstract: |
| Composite materials exhibit much more scattering material properties than metallic materials.The paper presents an application of weighted response surface method on structural reliability analysis of a composite pin joint.A three-dimensional finite element model is used to perform the deterministic progressive failure analysis of composite pin joint.The mechanical properties and ultimate strengths of one lamina are modeled as random variables and considered in the process of structural reliability analysis.A detailed study on the effect of different failure criteria and stiffness degradation rules is performed.This study shows that the combination of Olmedo-Santiuste failure criteria and Camanho-Matthews stiffness degradation rules produces the closest bearing strength result to experimental mean value.Another detailed study is also performed to investigate the effect of response surface parameter f.The results show that linear weighted response surface function with f=1 is capable of providing good approximations of statistical characteristics of the bearing strength of pin joints in composite laminates for structural reliability analysis. |