Generating optimal topologies in structural design using a homogenization method
Computer Methods in Applied Mechanics and Engineering
Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations
Journal of Computational Physics
Evolutionary structural optimization for problems with stiffness constraints
Finite Elements in Analysis and Design
An evolutionary method for optimization of plate buckling resistance
Finite Elements in Analysis and Design
Evolutionary structural optimisation using an additive algorithm
Finite Elements in Analysis and Design
A simple evolutionary topology optimization procedure for compliant mechanism design
Finite Elements in Analysis and Design
Evolutionary optimization of compliant mechanisms subjected to non-uniform thermal effects
Finite Elements in Analysis and Design
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This work presents an element addition strategy for 3D compliant mechanisms design. The proposed procedure is based on an extension of the evolutionary structural optimization (ESO) method, which has been successfully applied to several optimum material distribution problems, but not for 3D compliant mechanisms optimization. Even if most investigations for compliant mechanism design have been oriented for planar systems design, this technology may be useful also for 3D mechanisms design, for instance in making devices for micro- and nanomanipulation, like the popular hexapods mechanisms used for six axis positioning. These 3D structures and mechanisms (rigid or compliant) must be carefully manufactured and assembled from many precision components, and there are still many aspects that must be examined to accomplish the topology optimization and ensure the performance of these precision manipulators. The present paper aims to progress on this line, and will apply an alternative approach derived in this investigation, which improves the solutions obtained by this specific method. The proposed method has been tested in several numerical applications and benchmark examples to illustrate and validate the approach, and satisfactorily applied to the solution of 3D examples.