Journal of Computational Applied Mechanics

Analyzing the Buckling Behavior of In-plane Bidirectional Functionally Graded Porous Plates

Document Type : Research Paper

Authors

1 Department of Mechanical Engineering, Rajeev Gandhi Memorial College of Engineering and Technology, Nandyal-518501, A.P, India

2 Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Hyderabad, India

Abstract

The spacecraft and space shuttles demand novel engineering materials to meet the required properties. This can be accomplished by altering the material properties in more than one direction. The introduction of inplane bidirectional functionally graded materials with porosity are expected to exhibit these properties. This paper presents the buckling analses of inplane bidirectional (2-D) functionally graded porous plates (IBFGPPs) considering uniform porosity distribution in uni-axial and bi-axial compression. The effective modulus of elasticity of the material is varied in in x-and y-axes by employing the rule of mixtures. The higherorder theory used for the study of buckling response meets the nullity requirements at plate’s upper and lower surface and derived the equations of motion thru Lagrange equations. The displacement functions are formulated in simple algebraic polynomials, incorporating admissible functions to satisfy the simply supported conditions in both axial and transverse directions. The components of admissible functions are derived by Pascal’s triangle. Accurateness of this theory is judged by comparing it to existing numerical data in the literature. The effect of thickness ratio’s (a/h), aspect ratio’s (b/a), exponents (ζ_1and ζ_2) in η_1 and η_2-direction, and the porosity on the buckling response of IBFGPPs are examined comprehensively. The numerical findings provided here serve as reference solutions for evaluating diverse plate theories and for comparing them against results obtained through alternative analytical and finite element techniques. From the obtained results, it can be inferred that the proposed theory facilitates the assessing of buckling tendencies of in-plane bi-directional porous FG plates produced through sintering process and could be deemed as a pivotal in the process of optimizing the design of the IBFGPPs.

Keywords

Main Subjects

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Journal of Computational Applied Mechanics
Volume 55, Issue 3
July 2024
Pages 322-339
  • Receive Date: 06 March 2024
  • Revise Date: 20 March 2024
  • Accept Date: 25 March 2024