Using A Genetic Algorithm In Shape Optimization
Of The Front Axle Bump Stop For A New Pickup
Vehicle (ZAMAYD-24F)
Author(s)
M. Shafigh, B. Dehghan-Manshadi & B. Khosravi
Abstract
This work describes the use of a genetic algorithm in the shape optimization of a
bumper for a new pick-up vehicle. Design optimization has resulted from the
implementation of the interaction of the finite element analysis in automotive
component manufacture with the best optimization methods. Rubber component
design has remained an exception to this trend due to poor material models
inadequately representing hyperelastic behavior. However, with a clear
understanding of the working environment and an appropriate choice of material
constants we have the ability to sensibly predict elastomeric deformation and
thus make well-designed rubber products economically. To determine the best
material model for the bump stop, this paper compares the results from plane
strain indentation and stiffness tests on the rear axle bump stop designed
previously, with finite element analyses employing a variety of material models
having material constants derived from tests. After achieving the desired
configuration changes (by means of shape optimization) and a reliable material
model representing the behavior, the design of the front axle bump stop is
improved by using a genetic algorithm based finite element analysis. The
purpose of this optimization procedure is to tune the fitness curve of the bumper
so that its behavior is matched with the expected fitness curve of dynamic
simulation.
Keywords: shape optimization, bump stop, elastomeric materials, hyperelastic
materials, genetic algorithm.
1 Introduction
Ever growing competition, new government regulations and customer demands
have transformed product and service optimization into the core business of
Keywords
shape optimization, bump stop, elastomeric materials, hyperelastic
materials, genetic algorithm.
Related Book
Other papers in this volume
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