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Erschienen in:

2015 | OriginalPaper | Buchkapitel

Novel Approach for Structural Dynamic Topology Optimizations Based on Power Flow Mode Theory

verfasst von : Ye-Ping Xiong

Erschienen in: Vibration Engineering and Technology of Machinery

Verlag: Springer International Publishing

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Abstract

The generalized damping based power flow mode theory [1] reveals natural power flow behaviours of a dynamic system based on the inherent characteristics of the system’s damping distribution, which provides insight into energy dissipation mechanisms of the dynamic system. In this paper, a new Power Flow Mode dynamic Topology OPtimization (PFMTOP) approach is proposed based on the developed power flow mode theory to achieve topologically optimised systems’ damping material distributions with enhanced vibration suppression capability. Conventional method of topology optimization focuses on minimizing the structural frequency response or dynamic compliance without considering structural damping. The new approach developed herein uses the trace of system’s characteristic damping matrix as design objective to find an optimal damping material layout that maximize the energy dissipation for a given volume of the material to achieve minimum power flow response. Topology optimal design of damping distributions of two-phase structures subject to dynamic loading is studied. Example presented demonstrates the applicability and efficiency of the new PFMTOP approach. The obtained results reveal that the proposed approach can significantly enhance vibration energy dissipation and provides an effective method for optimised systems’ damping material distributions with enhanced vibration suppression capability and reduced material usages. This new method can be readily extended to more complex structures to optimize the topology of damping material layer for improved vibrational power flow control.

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Titel: Novel Approach for Structural Dynamic Topology Optimizations Based on Power Flow Mode Theory
verfasst von: Ye-Ping Xiong
Verlag: Springer International Publishing
Buch: Vibration Engineering and Technology of Machinery
Print ISBN: 978-3-319-09917-0

Electronic ISBN: 978-3-319-09918-7

Copyright-Jahr: 2015
DOI: https://doi.org/10.1007/978-3-319-09918-7_94

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