Author : Imtiaz Shareef Gandikota
Publisher :
ISBN 13 :
Total Pages : 121 pages
Book Rating : 4.:/5 (86 download)
Book Synopsis Multilevel Design Optimization of Automotive Structures Using Dummy- and Vehicle-based Responses by : Imtiaz Shareef Gandikota
Download or read book Multilevel Design Optimization of Automotive Structures Using Dummy- and Vehicle-based Responses written by Imtiaz Shareef Gandikota and published by . This book was released on 2013 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computationally efficient multilevel decomposition and optimization framework is developed for application to automotive structures. A full scale finite element (FE) model of a passenger car along with a dummy and occupant restraint system (ORS) is used to analyze crashworthiness and occupant safety criteria in two crash scenarios. The vehicle and ORS models are incorporated into a decomposed multilevel framework and optimized with mass and occupant injury criteria as objectives. A surrogate modeling technique is used to approximate the computationally expensive nonlinear FE responses. A multilevel target matching optimization problem is formulated to obtain a design satisfying system level performance targets. A balance is sought between crashworthiness and structural rigidity while minimizing overall mass of the vehicle. Two separate design problems involving crash and crash+vibration are considered. A major finding of this study is that, it is possible to achieve greater weight savings by including dummy-based responses in optimization problem.