Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimal 3D stiffener design with frequency considerations
In this paper, a new method to design the lay-out of shell stiffeners is introduced. This new approach has been derived from a two-phase, spherical micro-inclusions model and resulted in very simple closed-form expressions for the effective material properties. The 'relaxed' topology optimization problem can then be solved by general mathematical programming tools. It is very common to experience eigenvalue switchover when solving topology optimization problems with frequency design considerations. An incremental objective function formulation with two strategies was studied to reduce the oscillation of optimization solutions. Design examples are presented and discussed.
Optimal 3D stiffener design with frequency considerations
In this paper, a new method to design the lay-out of shell stiffeners is introduced. This new approach has been derived from a two-phase, spherical micro-inclusions model and resulted in very simple closed-form expressions for the effective material properties. The 'relaxed' topology optimization problem can then be solved by general mathematical programming tools. It is very common to experience eigenvalue switchover when solving topology optimization problems with frequency design considerations. An incremental objective function formulation with two strategies was studied to reduce the oscillation of optimization solutions. Design examples are presented and discussed.
Optimal 3D stiffener design with frequency considerations
Hae Chang Gea (Autor:in) / Yong Fu (Autor:in)
Advances in Engineering Software ; 28 ; 525-531
1997
7 Seiten, 9 Quellen
Aufsatz (Zeitschrift)
Englisch