Abstract
In this study, force and moment balance of a planar four-bar linkage is implemented using evolutionary algorithms. In the current problem, the concepts of inertia counterweights and physical pendulum are utilized to complete balance of all mass effects, independent of input angular velocity. A proposed multiobjective particle swarm optimization, and non-dominated sorting genetic algorithm II are applied to minimize two objective functions subject to some design constraints. The applied algorithms produced a set of feasible solutions called pareto optimal solutions for the design problem. Finally, a fuzzy decision maker is utilized to select the best solution among the obtained pareto solutions. The results show that optimal solutions minimize the weights of applied counterweights and eliminate both shaking forces and moments transmitted to the ground, simultaneously.
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This paper was recommended for publication in revised form by Associate Editor Tae Hee Lee
Mohammad Reza Farmani received the B.Eng. degree in mechanical engineering from Ferdowsi University of Mashhad, Iran, in 2005 and the M.Eng. degree in aerospace engineering from K.N. Toosi University of Technology, Tehran, Iran, in 2010.
Abdolrahman Jaamialahmadi is currently an Assistant Professor in the Department of Mechanical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. His research interests are Hydroforming, Forming limit diagrams, Mechanisms Design, and Optimization.
Meisam Babaie received the B.Eng. degree in fluid mechanical engineering from Shahrood University of Technology and M.Eng. degree in energy systems engineering from K.N.Toosi University of Technology, Tehran, Iran, in 2008. He is currently a Ph.D student in the Department of Build Environment and Engineering, Queensland University of Technology, Brisbane, Australia.
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Farmani, M.R., Jaamialahmadi, A. & Babaie, M. Multiobjective optimization for force and moment balance of a four-bar linkage using evolutionary algorithms. J Mech Sci Technol 25, 2971–2977 (2011). https://doi.org/10.1007/s12206-011-0924-8
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DOI: https://doi.org/10.1007/s12206-011-0924-8