Multi-objective optimization design of anti-roll torsion bar using improved beluga whale optimization algorithm

Abstract

PurposeThis study aims to reduce the redundant weight of the anti-roll torsion bar brought by the traditional empirical design and improving its strength and stiffness.Design/methodology/approachBased on the finite element approach coupled with the improved beluga whale optimization (IBWO) algorithm, a collaborative optimization method is suggested to optimize the design of the anti-roll torsion bar structure and weight. The dimensions and material properties of the torsion bar were defined as random variables, and the torsion bar's mass and strength were investigated using finite elements. Then, chaotic mapping and differential evolution (DE) operators are introduced to improve the beluga whale optimization (BWO) algorithm and run case studies.FindingsThe findings demonstrate that the IBWO has superior solution set distribution uniformity, convergence speed, solution correctness and stability than the BWO. The IBWO algorithm is used to optimize the anti-roll torsion bar design. The error between the optimization and finite element simulation results was less than 1%. The weight of the optimized anti-roll torsion bar was lessened by 4%, the maximum stress was reduced by 35% and the stiffness was increased by 1.9%.Originality/valueThe study provides a methodological reference for the simulation optimization process of the lateral anti-roll torsion bar.

Material Selection and Optimization of Torsion Bar Suspension for Military Vehicle in Case of Tank T-55

“…Russian tank T-55 which uses torsion bar suspension has a wheel travel of only 218 mm which is very low. In order to ensure the comfort of passengers and the evenness of vehicle operation, most of the vehicles use the easier two-system suspended suspension system [1] A thin steel tube known as a torsion bar is fastened to the vehicle's control arms and twists along its length, or axis, when the control arm moves up and down. The other end is secured in place and does not twist because it is attached to the vehicle's chassis.…”