Dynamic analysis of a car chassis frame using the finite element method

Abstract An automobile chassis structure has been analysed dynamically using the finite element method, and the results have been compared with those obtained experimentally. The first nine natural resonances of the frame up to 100 Hz have been examined. Two basic methods of predicting the dynamic response have been used involving different computing techniques. Since computing costs are of prime importance in any practical application of the finite element method, the modes of operation of the programs have been briefly described and running times are compared for a number of structural idealizations. The results presented show for a relatively simple structure that simple idealization concepts can give good results.