چكيده به لاتين
Suspension system due to its high flexibility, can be used in design based on a common platform to reduce the cost of design and production process in many different ways. Product platform optimization is a way to determine design variable set which not only deserves every product qualifications, but also it helps to find a set of parameters has the most commonality. This thesis proposed optimal design of McPherson suspension geometry for a product family based on common platform. So 3D model of Mcpherson suspension system with its kinematic equations are presented in order to obtain common hard points in product family. To find a set of parameters has the most commonality, the genetic algorithm developed based on common platform was used. According to the assumptions considered in thesis, common hard points finally determined the common link in each suspension. Optimization was done with a focus on improving handling performance and in order to minimize steering error, changes in most important kinematic parameter have been minimized during the wheel travel.
For a numerical solution, a family of car which includes five products has been proposed, to this end, Dacia-Renault well known platform (L90) has been used. Ultimatly, three suspension with respect to each class was designed. Based on purpose of platform design, pickup and station wagon suspension can be shared with designed suspension.
Keywords: Suspension geometry, Common platform, Product family, Common hardpoints, Optimization.
