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H.C. Mateus*, C.M. Mota Soares# and C.A. Mota Soares#

*ENIDH, Escola Nautica Infante D. Henrique, Paco de Arcos, Portugal
#CEMUL,Technical University of Lisbon, Instituto Superior Tecnico, Lisboa, Portugal

doi:10.4203/ccp.25.2.3

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H.C. Mateus, C.M. Mota Soares, C.A. Mota Soares, "Buckling Sensitivity Analysis and Optimal Design of Thin Laminated Shells", in B.H.V. Topping, M. Papadrakakis, (Editors), "Advances in Structural Optimization", Civil-Comp Press, Edinburgh, UK, pp 69-81, 1994. doi:10.4203/ccp.25.2.3

Abstract

This paper presents a discrete model for the buckling sensitivity analyses of thin multi-layered angle-ply composite structures. The model is based on a simple and efficient plate-shell element with 18 degrees of freedom, using the discrete Kirchhoff theory for the bending effects. Angle-ply design variables and vectorial distances from the middle surface to the upper surface of each layer, indirectly the thickness of each layer, are considered as design variables. The objective of the design is the maximization of the constrained or unconstrained buckling load parameter. The optimization process can be carried out using a two level approach. The design sensitivities are evaluated analytically, quasi-analytically and by global finite difference. The efficiency and accuracy of the model developed is discussed with reference to several applications.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 25 ADVANCES IN STRUCTURAL OPTIMIZATION Edited by: B.H.V. Topping and M. Papadrakakis Paper II.3 Buckling Sensitivity Analysis and Optimal Design of Thin Laminated Shells H.C. Mateus, C.M. Mota Soares# and C.A. Mota Soares# ENIDH, Escola Nautica Infante D. Henrique, Paco de Arcos, Portugal #CEMUL,Technical University of Lisbon, Instituto Superior Tecnico, Lisboa, Portugal doi:10.4203/ccp.25.2.3 purchase the full-text of this paper Full Bibliographic Reference for this paper H.C. Mateus, C.M. Mota Soares, C.A. Mota Soares, "Buckling Sensitivity Analysis and Optimal Design of Thin Laminated Shells", in B.H.V. Topping, M. Papadrakakis, (Editors), "Advances in Structural Optimization", Civil-Comp Press, Edinburgh, UK, pp 69-81, 1994. doi:10.4203/ccp.25.2.3 Abstract This paper presents a discrete model for the buckling sensitivity analyses of thin multi-layered angle-ply composite structures. The model is based on a simple and efficient plate-shell element with 18 degrees of freedom, using the discrete Kirchhoff theory for the bending effects. Angle-ply design variables and vectorial distances from the middle surface to the upper surface of each layer, indirectly the thickness of each layer, are considered as design variables. The objective of the design is the maximization of the constrained or unconstrained buckling load parameter. The optimization process can be carried out using a two level approach. The design sensitivities are evaluated analytically, quasi-analytically and by global finite difference. The efficiency and accuracy of the model developed is discussed with reference to several applications. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £60 +P&P)
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