Vehicle handling and stability is a most important part of active vehicle safety. ISO standards on passenger vehicle dynamic test are analyzed. A corresponding set of road test system is established by introducing steering robot. And several export certification tests of ISO standards have been accomplished for Chinese independent brand automakers. The test data and characteristic figures are presented for a vehicle which shows good circular driving behaviour, steady transient response behaviour and road-holding ability and lateral stability according to ISO standards.

Special V-shaped heat bending test was designed for 22MnB5 hot forming steel of different thicknesses. Blanks after heating 5 min at around 950°C to austenize fully were bended at different temperature conditions, and simultaneously the spring-back behavior and microstructure features of heat bending specimens were investigated. The result shows that 600-650°C temperature zone is optimal for bending forming and martensite texture transforming. Real hot forming anti-collision beams were produced at 600-650°C and comparison bending test was conducted to reveal more qualified mechanics at this temperature zone.

Vehicle handling and stability has effect on positive safety of automotive directly. Test system of handling and stability is built for its road test and the test variables signal can be acquired and stored synchronously. Based on MATLAB GUI, software is developed for the test data processing, so that the stored data is to be analyzed and handling and stability test result is given by the software automatically. Using the test system in paper, handling and stability road test of one domestic sedan is fulfilled and scored, which verifies the applicability of the test system and scoring software in paper.

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