چكيده به لاتين
Abstract
Nowadays, crashworthiness is one of the transportation problems in the world and actual crash test is costly and time-consuming; therefore; in recent years, automotive impact simulation using different software has been used. In this project, main product of the national platform (NP01) has been meshed completely by HyperMesh software and then impact of the finite element model of NP01 has been simulated using ECE standards requirements in PAM-Crash software. In this regard, impact velocity, automotive joining, definition of material, barrier model and preliminary conditions of automotive impact have been defined. Analysis of impact has been done in three cases of frontal impact, side impact and rear impact then Standard requirements and optimization of structure have been studied. Results have shown that in both frontal and side impacts, acceleration is in the standard range at the position of occupants; Deformation of sections and some parts of the vehicle that are important in impact improved by structural modification and using reinforcement components that increase energy absorption. Also, standard requirements in the rear impact is in the standard range. In addition, by adding dummy and driver airbag model, frontal impact of finite element model of the automotive has been done according to ECE R94 standard. There, Taguchi using ANOVA, analysis of airbag parameters and their influence on both cases for head injury criteria (HIC36) and peak head acceleration has been studied by using taguchi and ANOVA methods. Results shows that airbag distance to dummy and initial inflator gas temperature have the most influence on the both criteria. Finally, the best and worst case of impact has been predicted using the Taguchi method.
Keywords: impact simulation, finite element, taguchi, optimization
