Aiming to meteorite impact affair of Cangshan,the popular nonlinear program ANSYS/LS-DYNA is used to analyze how the change of impact velocity affect the emergence,development and evolvement of the impact deformation field of meteorite.

The impact velocity was 6.

The micro-hardness analysis indicates that the hardness near the interface is higher and each welding interface is approximate,concluding that the impact velocity of each layer is similar.

A design method of a head impactor is proposed and a relevant device used in impact test for pedestrian’s head injury measurement had been developed.

The curves of impact acceleration vs time of some common explosives were experimentally determined in drop weight test.

Through theoretical analysis and analyzing a great of experiments data, it can be proved that the impact acceleration of the catenaries hard-particles are commonly about double g and the traditional methods do not agree with the facts and figures, which judges the catenaries hard-particles by dozens of g or o.

Then its affecting factors are analyzed by thorax impact calibration tests,and according to the practical situation in China,the low speed thorax impact calibration procedure for our country is discussed.