Buckling of Multilayer Plates by Finite Elements

by Harry R. Lundgren, (M.ASCE), Assoc. Prof. of Engrg.; Arizona State Univ., Tempe, AZ,
Ahmed E. Salama, (A.M.ASCE), Assoc.Prof of Engrg.; Oklahoma State Univ., Stillwater, OK,

Serial Information: Journal of the Engineering Mechanics Division, 1971, Vol. 97, Issue 2, Pg. 477-494

Document Type: Journal Paper


A method for determining the critical in-plane stresses for multilayer sandwich plates is developed. Stress funcitons are assumed in the finite element development of the stiffness of a multilayer plate element. A stiffness modifying matrix is then used to formulate an eigenvalue problem, which when solved yields the critical in-plane stresses. This procedure facilitates the solution of multilayer plates of varying boundary conditions and in-plane stress distribution.

Subject Headings: Buckling | Plates | Finite element method | Stiffening | Stress distribution | Sandwich panels | Matrix (mathematics) | Eigenvalues

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