Abstract
Proper generalized decomposition (PGD), an advanced numerical simulation method, has been successfully used as a model reduction method in many fields. In this study, functionally graded materials are analyzed using the Airy stress function method, and a compatible equation representing the stress function is obtained. PGD is used to solve a compatible equation, which is a complex high-order partial differential equation, by decomposing it into two one-dimensional problems in space. The solution of the complex high-order partial differential equation is then obtained by solving the two one-dimensional problems using Chebyshev’s method. The accuracy of the proposed method is verified by comparing the PGD solution with the analytical solution. Numerical examples show that highly accurate results can be obtained by using several iterative modes. Therefore, the PGD method is an effective numerical technique for the stress analysis of functionally graded materials. This paper provides a theoretical basis for future research on the stress concentrations of irregular shape and rough surface.
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Funding
The work was supported by the National Natural Science Foundation of China (Nos. 11702252 and U1804254) and the Key Teachers Program for the University of Henan Provence (2019GGJS005).
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Xu, G.T., Wu, S.K. PROPER GENERALIZED DECOMPOSITION METHOD FOR STRESS ANALYSIS OF FUNCTIONALLY GRADED MATERIALS. Mech. Solids 56, 430–442 (2021). https://doi.org/10.3103/S0025654421030146
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DOI: https://doi.org/10.3103/S0025654421030146