Three-dimensional finite element formulations for thick and thin laminated plates
Abstract
Aiming at satisfying the need for modeling the effects of transverse shear and transverse normal stress in thin and thick laminated plates, a family of three quadrilateral displacement finite elements are formulated. The family includes: a 16 node, 40 degree-of-freedom; a 16 node, 48 degree-of-freedom; and a 24 node, 64 degree-of-freeedom quadrilateral element for modeling each layer of the laminate. To evaluate the formulation and applicability the present elements are used to model a range of example problems of thin and thick laminated plates in bending and stretching, and the results are compared with alternative solutions. Examples show that these three types of finite elements are capable of modeling, to various degrees, the effects of transverse shear and interlaminar stresses which can cause delamination.
Degree
Ph.D.
Advisors
Yang, Purdue University.
Subject Area
Aerospace materials
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