A new laminated triangular finite element assuring interface continuity for displacements and stresses

摘要

The objective of this paper is to present a new 81-degrees-of-freedom finite element for geometrically and materially linear elastic multilayered composite, moderately thick plates. The element is a six nodes C~1 triangular element based on a new kind of kinematics and built from Argyris interpolation for bending, and Ganev interpolation for membrane displacements and transverse shear rotations. The kinematics allow both, the continuity conditions for displacements and transverse shear stresses at the interfaces between layers of a laminated structure, and the boundary conditions at the upper and lower surfaces of the plates, to be exactly ensured.