Research On Crashworthiness Of A Passenger Car’s Bumper

The automotive impact safety is one of the hot topics of global concern and research.Car bumper is one of the key factors affecting the crash safety of its research in recent yearshas become increasingly valued. In this paper, based on China Automotive Technology andResearch Center (Tianjin) bumper crashworthiness test items for the role played by thevehicle bumper, structure and design methods are analyzed and summarized, the countries ofthe test methods were studied, and the test the results were specific analysis. In this paper,automobile bumpers around this system carried out the following research areas:1. Structural and design features of the bumper system is analyzed. Bumper design mustconsider not only meet crash safety requirements, but also consider the resulting lowerbumper damage, etc., and how quickly and efficiently the replacement or repair, but also tominimize maintenance costs, lower insurance costs in the event of a low speed collision.2. Introduces and analyzes the different countries and regions, mainly for automotivebumper standards and methods of performance testing. In addition to the current worldwideautomotive repair Research Association: outside (RCAR Research Council for AutomobileRepairs) and IIHS (Insurance Institute for Highway Safety) of the Insurance Associationstandards, in addition to the main U.S. standard FMVSS581, European standards ECER42and China National Standard GB17354-1998. The same point in the analysis, it is alsoanalyzes the differences and the respective characteristics of the host.3. Automotive bumper system finite element model of the low-speed simulation-basedanalysis of stress and deformation contours, low-speed collision regulations from differentanalyzes are designed to meet crash requirements bumper.4. Based on the analysis of high-speed collision of vehicle models, analysis bumpersystem does not meet the design requirements of links, use reasonable means to improve,improve on the base model and its finite element analysis simulation, so that the final designof the system to meet the design requirements improve the system of energy absorptioncharacteristics and crash safety.5. The front of the vehicle pedestrian protection analysis model, analyze and optimizethe bumper system, so that the final design of the system to meet the GTR regulatoryrequirements, improve system performance for pedestrian protection.6. By real car bumper crash tests to verify the performance of the system to protect andsummarize main points of the bumper development process.Currently, much domestic car bumper energy absorption is poor, and therefore how toimprove the energy-absorbing bumpers and crashworthiness performance on a collisioncourse, has become the new model development process focus point. Through the study ofcrashworthiness bumper system, improve the vehicle’s passive safety performance bumperfor all Beijing Automotive Group vehicle bumper design and development provides avaluable reference.