Performance of a fiber reinforced polymer web core skew bridge superstructure. Part I: field testing and finite element simulations |
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Authors: | Amjad J Aref Sreenivas Alampalli Yihong He |
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Affiliation: | Department of Engineering Mechanics, The School of Civil Engineering and Mechanics, Shanghai Jiaotong University, Shanghai 200240, People's Republic of China |
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Abstract: | An analytical method is presented to investigate hydrothermal effects on locally buckling for an elliptical delamination near the surface of cylindrical laminated shells. The critical strain of non-linear buckling for a locally elliptic delamination of cylindrical laminated shells is obtained by considering transverse displacements of the elliptically sub-laminated shells. The stacking sequence of sub-laminated shells may be multilayer and asymmetric. The geometrical axis of sub-laminated shells may be arbitrary. The Young's modulus and the thermal and humidity expansion coefficients of the material are considered as functions of temperature change in base-laminated shells. The critical strains of locally buckling for cylindrical laminated shells subjected to hydrothermal effects are extracted for different stacking sequences, and different radii of base-laminated shells, by applying Rayleigh–Ritz method based on second variation of potential energy. From results carried out, it is found that the critical strain from the non-linear buckling for a locally elliptic delamination near the surface of a cylindrical laminated shell presents a lower value than that from linear considerations. |
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Keywords: | Cylindrical laminated shell Non-linear local buckling Elliptic delamination Hydrothermal effects |
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