| Automotive traffic accidents have been became"the first public harm"which threaten human safe. As the fast rising of national economy, improvement of living standard, enhancement of safety consciousness, automotive industry and traffic utility will develop to a senior level, a new demand will be raised to automotive safety. Improvement of automotive safety not only can reduce the casualties in automotive traffic accidents, but also affect the traffic environment and the stable of people living directly. Reduce the casualties of traffic accidents at the largest degree is the important problem to be solved in automotive engineering and related field.Automotive occupant restraint system is one of the main research content in automotive passive safety field. Safe-belt and airbag have been used in modern automobiles as a device which can protect the crashing damage effectively. Start from the system concept, match the whole driver safety system mechanical property of safe-belt and airbag etc, improvement the protect function to driver. The main contents are:1. Introduce the main research content of occupant restraint system, the research status of internal and foreign,related evaluate rules of occupant restraint system and regulation of every countries;2. On the base of Multi-body and finite elements theories, build the driver occupant restraint system model of one car, the entire model contain the body, safe-belt, airbag and dummy, after adjust the model, compared to the test date, accord with the engineering requirement;3. Analysis the sensitive degree of the parameters of the restraint system, choose the sensitive parameters and optimize these parameters through orthogonal experiment design, dispose the dates use bally difference analytical method, get the optimized group, simulate the optimized model in MADYMO, the effect is good compared with the original model, at last, validate the stability of the optimized model.
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