| At present, with the requirements of environmental pollution and the high price of oil, the development of the traditional vehicle gets more and more obsession. So the automotive enterprises pay more attention to the development of electric vehicle in many countries. Like the traditional vehicle, components of electric vehicle also must satisfy the relevant safety requirements and guarantee the service life. Therefore, supported by the key basic theory project of the central university basic scientific research foundation[531107040300], the structure performance of battery box is very important, because it is the protection device of battery in electric vehicle, and it is important to study stress and displacement disturbing of battery box in particular condition and optimize the positions where are weak in intensity and rigidity. The primary works and innovation of this thesis are as follows:(1)Finite element strength analysis model of battery box was established and the static strength of the battery box under different loads was analyzed by Abaqus. Stress concentration area of battery box was acquired and strength check of this area was conducted with strength theory.(2)Related modal calculation of battery box was analyzed by the modal analysis module of Abaqus and modal data and modal cloud of battery box were gained to authenticate its security.(3)A comprehensive grasp about the dynamic characteristic of battery box was done by analysing the mode characteristic and vibration of battery box, and verify the vibration simulation method's correctness through comparing the test results. The vibration simulation results provide important and faithful references for the battery box. |
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