Research on Crashworthiness of Car Bumper System

Abstract

The computer simulation method is used to study the crashworthiness of car bumper system. Firstly, the CAD model of the car and bumper system is established in CATIA. The pre-processing for the model is finished in Hyper-Mesh and the finite element model is established. Then the process of crash simulation is calculated in Pam-Crash. The simulation results are compared with the test results to verify the accuracy of the finite element model. Finally, the low-speed crash simulation of the bumper system is conducted. The crash displacement and deformation of the bumper system are forecast through the process of simulation, which can provide a reference for the next design and improvement.

Highways Construction and Optimal and Intensive Land Use

“…According to the relevant data and calculations, currently a 58 hm2 area of land is occupied for per kilometer four-lane highway, 3 to 3.5 times the land use of Grade two highways in general. This requires that the study and solution of the relationship between highway construction and land conservation should be based on the principle of "both optimizing land use and guaranteeing construction [4,5] . "…”