Calculation method of the auto body flexural stiffness based on statistic processing

A flexural stiffness calculation method based on statistical theory was proposed.The flexural stiffness of a bus body was calculated in different loading methods,then the fact that the stiffness results meet the Gaussian distribution using chi-square test was verified,so that the sample average could be considered as the bus body flexural stiffness.In order to improve the calculation efficiency,an auto body flexural stiffness calculation program was programmed by FORTRAN language,so the whole stiffness calculation process would be completed automatically.