Stability characteristics of porous functionally graded plate in thermal environment

[摘要] This paper deals with the investigation of stability characteristics of functionally gradient plates with microstructural defect (porosity). The mathematical formulations have been done using recently developed non-polynomial deformation theory by the authors'. The characteriticsequations are derived using a variational principle. Finite element formulation is done using C0continuous nine-noded elements with seventy-two degrees of freedom per element. Porosity effect has been incorporated in the material properties using therecently developed mathematical model by the authors'. Convergence and validation studies have been shown to establish the authenticity and reliability of the solutions. The effect of porosity volume fraction, temperature distribution and boundary conditions on the stability of the gradient plate is presented in diagrammatically.

[发布机构] School of Engineering, Indian Institute of Technology Mandi, HP, India^1

[效力级别] 机械制造

[关键词] Finite element formulations;Functionally graded plates;Functionally gradient;Mathematical formulation;Microstructural defects;Thermal environment;Two degrees of freedom;Variational principles