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| Stress concentration analysis of stiffened composite laminates with multiple elliptical holes or inclusions |
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| DOI：10.7511/jslx20083072 |
| KeyWord:hybrid stress element,composite,stiffened laminates,multiple elliptical inclusions,stress concentration |
| LIN Zhi-yu XU Xi-wu |
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| Abstract: |
| Based on the complex potential method in the plane theory of elasticity of an anisotropic plate containing an elliptical inclusion,and using hybrid variational principle,a hybrid stress element with an arbitrary elliptical inclusion for anisotropic plates has been established,which assorts with the conformal finite element.Using the hybrid finite element to describe the region with elliptical holes or inclusions,the stringer is modeled as bar element,other regions are modeled as 8-node isoparametric elements,the analytical method of a finite stiffened composite laminates with multiple elliptical holes or inclusions is set up.The effects of some parameters on the stress distribution are studied in detail.Some conclusions are drawn. |
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