Abstract
This research focuses on the synthesis of linkage parameters for a bistable compliant system (BSCS) to be widely implemented within space applications. Initially, BSCS was theoretically modeled as a crank-slider mechanism, utilizing pseudo-rigid-body model (PRBM) on stiffness coefficient (v), with a maximum vertical footprint (bmax) for enhancing vibration characteristics. Correlations for mechanism linkage parameters (MLPs) and responses (v and bmax) were set up by utilizing analysis of variance for response surface (RSM) technique. RSM evaluated the impact of MLPs at individual/interacting levels on responses. Consequently, a hybrid genetic algorithm-based particle swarm/flock optimization (GA-PSO) technique was employed and optimized at multiple levels for assessing ideal MLP combinations, in order to minimize characteristics (10% v + 90% of bmax). Finally, GA-PSO estimated the most appropriate Pareto-frontal optimum solutions (PFOS) from nondominance set and crowd/flocking space approaches. The resulting PFOS from validation trials demonstrated significant improvement in responses. The adapted GA-PSO algorithm was executed with ease, extending the convergence period (through GA) and exhibiting a good diversity of objectives, allowing the development of large-scale statistics for all MLP permutations as optimal solutions. A vast set of optimal solutions can be used as a reference manual for mechanism developers.
Highlights
Academic Editor: Maciej Lawrynczuk is research focuses on the synthesis of linkage parameters for a bistable compliant system (BSCS) to be widely implemented within space applications
Five mechanism linkage parameters (MLPs) (F, X, ∆, θ1, and t) and two outputs were selected to obtain multiple potential mechanisms with conditions such as X > ∆, 90% bmax, and 10% of ѵ, from theoretical results, along with minimal F/θ1
GAPSO presented a vast degree of information on all possible sets of optimized levels for MLP combinations
Summary
Academic Editor: Maciej Lawrynczuk is research focuses on the synthesis of linkage parameters for a bistable compliant system (BSCS) to be widely implemented within space applications. 1. Introduction is study presented a bistable compliant mechanism (BCM) concept design, together with an optimization method, based on selected output parameters. BCM aims to operate as a deployable unit cell, requiring one degree of freedom (i.e., one actuation input), and occurs within multiple applications such as developing structures, self-closing, gates, and switches [1, 2] Such unit cells can be tessellated and arranged to execute shape-morphing systems in an organized pattern [3, 4] for morphing structures, increasing the ability to morph the unit cell surface profile when actuated, deploying space antennas, and aircraft wing flaps [5,6,7]. Researchers have developed approaches to model-compliant mechanisms for approximation
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