Material Design for Optimal Postbuckling Behaviour of Composite Shells

Analysis and Design for the moderately deep postbuckling behaviour of composite plates

OPTIMAL DESIGN OF SHELLS WITH STEP-FUNCTION DISTRIBUTION OF THICKNESS

The paper is concerned with a methodology of optimal design of shells of minimum weight with strength, stability and strain constraints. Stress and strain state of the shell is determined by Galerkin method in the mixed finite element formulation within the geometrically nonlinear theory. The analysis of the effectiveness of different optimization algorithms to solve the set problem is given. T...

Optimal Design of Cylindrical Shells

The present paper studies an optimization problem of dynamically loaded cylindrical tubes. This is a problem of linear elasticity theory. As we search for the optimal thickness of the tube which minimizes the displacement under forces, this is a problem of shape optimization. The mathematical model is given by a differential equation (ODE and PDE, respectively); the mechanical problem is descri...

A design model to predict optimal two-material composite structures

1 I n t r o d u c t i o n We address the problem of how to predict the optimal configuration of a continuum structure composed of two distinct, linearly elastic materials. The problem is cast in a form that has the stiffer of the component materials treated as "designable", while properties of the second, less-stiff material are taken to be specified and fixed. The goal in the treatment of this...

Optimum composite material design

— The microstructure identification problem is treated : given certain phases in given volume fractions, how to mix them in aperiodic cell so that the effective material constants of the periodic composite lie the closest possible to certain prescribed values ? The problem is studied for the linear conduction équation. It is stated in terms of optimal con trol theory ; the admissible micro geom...