Topological Optimization of Dynamic Characteristics for Orthotropic Material Structure Using Shape Derivative and Augmented Lagrangian Method

Sen Liang, Lei Liang

Abstract


This paper presents a new level set method for topology optimization of dynamic structure of orthotropic materials using the shape derivative analysis and augmented Lagrangian method. The design boundary of the structure is embedded implicitly into the zero level set of a higher dimensional scalar function, which is mathematically represented as a Hamilton-Jacobi partial differential equation (PDE). The design sensitivity of the dynamic structure is obtained by the combination of the level set representation and the shape derivative method. In doing so, the evolution of the design boundary is advanced iteratively in terms of the solutions of the Hamilton-Jacobi PDE using explicit time marching schemes. Some typical numerical examples are applied to demonstrate the validity of the present method.


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Modern Applied Science   ISSN 1913-1844 (Print)   ISSN 1913-1852 (Online)

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