Computer-aided design tool for typical flexible mechanisms synthesis by means of evolutionary algorithms

Accurate prediction for mechanisms’ dynamic responses has always been a challenging task for designers. For modeling easiness purposes, mechanisms’ synthesis and optimization have been mostly limited to rigid systems, making consequently the designer unable to vow that the manufactured mechanism sat...

Full description

Saved in:
Bibliographic Details
Published in:Robotica 2024-04, Vol.42 (4), p.1172-1211
Main Authors: Ben Abdallah, Mohamed Amine, Khemili, Imed, Aifaoui, Nizar, Laribi, Med Amine
Format: Article
Language:English
Subjects:
Approximation
CAD
Comparative analysis
Computer aided design
Connecting rods
Design optimization
Efficiency
Evolutionary algorithms
Genetic algorithms
Material properties
Mechanical devices
Optimization
Optimization techniques
Robots
Slider-crank mechanisms
Synthesis
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Accurate prediction for mechanisms’ dynamic responses has always been a challenging task for designers. For modeling easiness purposes, mechanisms’ synthesis and optimization have been mostly limited to rigid systems, making consequently the designer unable to vow that the manufactured mechanism satisfies the target responses. To address this limitation, flexible mechanism synthesis is aimed in this work. Two benchmark mechanisms being the core of myriad mechanical devices are of scope, mainly, the flexible slider-crank and the four-bar. In addition to the mechanism dimensions, materials properties have been embedded in the synthesis problem. Two responses are of interest for the slider-crank mechanism, the slider velocity, and the midpoint axial displacement for the flexible connecting rod. Whereas five responses have been compiled for the four-bar mechanism synthesis. A comparative analysis of seven optimization techniques to solve the synthesis problem for both mechanisms has been performed. Subsequently, an executable computer-aided design tool for mechanisms synthesis has been developed under MATLAB®. Numerical outcomes emphasize the limits of a single-response-based synthesis for a flexible mechanism. It has been proven that combining different responses alleviates possible error and fulfill high-accuracy requirement.
ISSN:0263-5747
1469-8668
DOI:10.1017/S0263574724000171