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| Thermo viscoelastic analysis of curing residual stresses in composite laminates |
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| DOI：10.7511/jslx19964059 |
| KeyWord:viscoelastic,composite laminat,curing residual stress, |
| Guo Zhaopu Chen Haoran |
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| Abstract: |
| A finite element analysis treating linear thermo viscoelastic residual stress response during the post cure cool down of composite laminates is presented. In the present analysis, Schaperys hereditary integral viscoelastic constitutive law is applied. The numerical results on stress and deformation histories are obtained for the composite laminates subjected to thermal loads. The results indicate that the viscoelastic effects are important on residual stresses during curing of composite laminates. Therefore, the use of elastic solutions as conservative estimates of the residual stress state in composite laminates is often inappropriate. |
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