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NEW EXTRAPOLATION TECHNOLOGY IN BIDIRECTIONAL FREQUENCY EVOLUTIONARY STRUCTURAL OPTIMIZATION METHOD |
Liu Yameng,Wang Hao
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Department of Mechanics and Engineering Science, Fudan University, shanghai, 200433 |
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Abstract This article discusses extrapolation technology in structural topology optimization.The traditional extrapolation method in bidirectional evolutionary structural optimization method can only be applied on regular rectangle element or cuboidal element, the article introduces a new method. The method is based on a new idea. After the normal modes analysis, according to the known displacements of the nodes in the intra-domain, unknown displacements of the nodes on the boundary of the structure will be calculated by linear static method. The method can be popularized on arbitrarily elements. The example demonstrates that the method in this article is effective.
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Received: 05 May 2008
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