Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 16, Issue 4, Pages 307-317Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X05050104
Keywords
compliant mechanism; adaptive shape morphing; load path representation; binary ground structure; genetic algorithm
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The synthesis of shape morphing compliant mechanism is inherently different from the typical single output design problems, due to the multiple output points along the morphing boundary. We have previously developed a genetic algorithm (GA)-based synthesis approach, incorporating a binary ground structure parameterization, to systematically design shape morphing compliant mechanisms. However, the approach is ineffective due to issues such as the generation of disconnected structures and the need to choose an initial mesh. In this paper, we present the 'load path representation,' which is developed to overcome the issues encountered using the binary ground structure parameterization. The performance of the load path approach over the binary ground structure approach is demonstrated through several design examples. The results have shown that the load path approach offers several advantages, such as (a) eliminating the need of an initial ground structure, (b) ensuring structural connectivity, and (c) yielding solutions that generate desired shape change efficiently.
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