M. Ganapathi et M. Touratier, A STUDY ON THERMAL POSTBUCKLING BEHAVIOR OF LAMINATED COMPOSITE PLATES USING A SHEAR-FLEXIBLE FINITE-ELEMENT, Finite elements in analysis and design, 28(2), 1997, pp. 115-135
This paper deals with a nonlinear finite element formulation for study
ing the postbuckling behaviour of laminated plates induced by a unifor
m/nonuniform temperature field. The thermal stress analysis is carried
out for the nonuniformly distributed temperature loading over the pla
te before solving the buckling problem. The formulation is based on th
e Reissner-Mindlin first order shear deformation theory. The nonlinear
ity due to moderately large deformation of the plate is included in th
e formulation. Deflection-load relationships are obtained through an i
terative method. An element based on C degrees continuity developed re
cently is used to investigate the postbuckling/secondary instability b
ehaviour of the laminates. Detailed numerical results based on various
parameters are presented for cross-ply and angle-ply laminated compos
ite plates with different boundary conditions. (C) 1997 Elsevier Scien
ce B.V.