One Min-bus Frontal Collision Performance Optimization Of Restraint Systems

With the cars of the increase in road traffic accidents have been increasing in each car, has become a worldwide public hazard. How to maximize the collision to ensure the safety of the crew and enhance the passive vehicle safety, has been in the world today has become a major theme. Computer performance of the rapid increase in collision simulation of the rapid development of technology for the simulation of the collision to provide in-depth development of the necessary conditions for MADYMO is the most commonly used software simulation of the collision. At present, many foreign car companies are using software MADYMO crew bound for performance evaluation and optimization. As a result, for this article was MADYMO digestion and absorption, and applied to the system model crew bound for the establishment and optimization.First of all, reading a lot of references on the basis of vehicle collisions on the classification of the human body and the mechanism of injury, collision and safety laws and regulations on simple, and how to improve the collision safety measures to be studied.This was followed by an in-depth study in the collision theory and different the basic finite element method on the basis of. MADYMO use of the software set up, including seat belts, airbags, seats, steering and trim pieces, including a minibus bound by the crew of system simulation models, and to verify the accuracy of the model.After analysis of the micro-car occupant restraint system, the characteristics of the minibus on how to improve the passive safety of the two programs to improve and MADYMO the use of software programs to improve the effectiveness of the verification calculation.Finally, this article analyzes the vehicle occupant restraint system optimization feature of the proposed three-step optimization method, that is, the sensitivity analysis first, and then optimize the parameters for a single, final test design. The optimization method of calculation and optimization of multi-dimensional MADYMIZER results contrast, the method proved to be effective.This study focused on: (1) Modeling in-depth study, using a different method of modeling the establishment of airbag and seat belt finite element model.(2) Using experimental data to verify the validity of simulation model, through different methods of modeling, in-depth study modeling process.(3) On the airbag and seat belt design parameters are optimized to improve and upgrade the system.(4) On a commercial trucks to carry out safety airbag on the match.(5) Car before the collision course of study by staff injury parameters, as well as major causes of injury and damage mechanism analysis.This study significance on:(1) digestion and absorption of the crew of injury simulation software MADYMO, have studied the crew protective system bound by the general process for future researchers summed up the experience for future research work has laid a theoretical foundation.(2) Analysis of the crew bound minibus on the basis of the characteristics of the system for the crew bound minibus system to improve the two programs, both at home and abroad program is the first time, they are practical, not only for now There are small changes to the car and minibus on the improvement of passive safety played a significant role.(3) In the digestion and absorption MADYMO optimization software module MADYMIZER on the basis of the combination of the characteristics of MADYMIZER module, a sensitivity analysis first, and then optimize the parameters for a single, final tests designed to optimize the three-step method. It is suitable for vehicle occupant safety restraint systems to optimize the design parameters, and is conducive to the whole crew bound system performance analysis and search for direction control.