The Proceedings of OPTIS
Online ISSN : 2424-3019
2006.7
Session ID : 118
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118 Generation of Link Mechanism by Shape-Topology Optimization of Trusses Considering Geometrical Nonlinearity
Makoto OHSAKIShinji NISHIWAKI
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Abstract
A general approach is presented for generating link mechanisms from a highly connected ground structure. The structure is modeled as a pin-jointed truss, and the unnecessary members are removed by solving the optimization problem for minimizing the total structural volume under constraints on the maximum load, the displacement at the specified node, and the stiffnesses at initial and final states. The design variables are cross-sectional areas and the nodal coordinates. It is shown in the numerical examples that several mechanisms can be naturally found as a result of optimization starting from randomly selected initial solutions.
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© 2006 The Japan Society of Mechanical Engineers
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