Applied to an electric car, the battery frame structure was designed for the storage batteries of electric vehicles under the test conditions in accordance with the GB11551-2003 regulations, and the crashworthiness finite element analysis was conducted with ANSYS/LA-DYNA through which the deformation of the battery frame is observed. Under the premise of ensuring the storage battery is not disconnected from the shackles and fled into the crew cabin, the structure is optimized, and safety of the battery protection device is evaluated. Combining with the safety test program and finishing lightweight optimization design.

On the basis of the meaning of material metabolism of mineral resources development (MRD), its characteristics are analyzed, such as complexity, controllability, consecution and differences. The material flow analysis on MRD can provide basis in environment pressure of mineral resources analyzing and provide support for the circulation economy of mineral industry. The analytical method of the material flow analysis of MRD is put forward, and the account system and index system are set up.

From the view of driver’s driving behavior and reaction characteristics, the factors affecting driver’s reaction time are comprehensively analyzed. Then design and prepare driver’s reaction time of emergency braking detection system on both hardware and software by using MCU. And according to the factors affecting driver’s reaction time, the reaction time of emergency braking of different gender drivers in different conditions is tested by using orthogonal test method. From the experimental results, the degree of influence of different factors and different levels on driver’s reaction time is obtained and this provides a reference for safety driving.

CAE analysis on engine hood is conducted under five common working conditions in this paper. Considering lightweight material application status at present, three material substitution plans are determined. To make full use of material properties, draw up size optimization scheme based on volume target and displacement and frequency constraints. Determine the optimum thickness by conducting size optimization on engine hood with optimization tool-Optistruct, so as to realize lightweight design.Based on the introduction of a evaluation method for lightweight scheme selection based on overall satisfaction and taking the factors of weight, cost and performance into consideration, at last, determine the best lightweight scheme.