Abstract
In this paper, thermomechanical-buckling response of functionally graded (FGM) skew plates subjected to different thermal loadings is investigated by utilizing the finite element method based on the Love-Kirchhoff assumptions. Only membrane and bending parts are taken into account in the formulation, whereas the transverse shear strains are neglected. By using the variational principle, the weak form of equilibrium equations is derived. Then, the displacement and strain of the FGM skew plate are discretized using a four nodes finite element leading to the construction of the geometric and material stiffness matrices. The critical buckling load is determined, then by the resolution of the eigenvalue problem. Two types of thermal loadings, namely uniform and non-uniform temperature rises through the thickness direction are taken into account. The thermomechanical properties of the FGM skew plate are temperature-dependent and can vary continuously through the thickness direction of the constituents according to a power- law distribution. Different numerical simulations are performed, where the validity of the formulation is first checked through a comparative study. Next, parametric analysis is carried out. The influence of several important parameters such as power-law index, thermal effects and skew angle is presented and discussed. It is concluded that these parameters play a significant role in the thermomechanical buckling response of FGM skew plates.
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Zghal, S., Trabelsi, S., Dammak, F. (2023). Thermomechanical Buckling of FGM Skew Plate. In: Walha, L., et al. Design and Modeling of Mechanical Systems - V. CMSM 2021. Lecture Notes in Mechanical Engineering. Springer, Cham. https://doi.org/10.1007/978-3-031-14615-2_10
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