WIT Press

Finite Element Approach To Energy Based Optimization Of Laminated Plates

Price

Free (open access)

Paper DOI

10.2495/CP980031

Volume

21

Pages

10

Published

1998

Size

886 kb

Author(s)

Michal Sejnoha and Karel Matous

Abstract

A multilayered plate element combined with a micromechanical analysis of fibrous composite materials is incorporated in the energy-based optimization of laminated structures. The internal stresses or eigenstresses, promoted here by manufacturing processes, are introduced as control parameters to provide for a minimum of various objective functionals. The optimal values of the fiber eigenstresses are found employing the combinatorial optimiza- tion technique known as a simulated annealing. Results are presented for the B/A1 composite system. 1 Introduction It is well known that certain composite systems and the brittle matrix based composite laminates in particular are prone to deflection and may fail when bent to more then a slight angle. To push the limits of composite materials used primarily in applications, where the bend- ing defo

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