The invention relates to a vehicle door deformation acquisition method considering nonlinear compression characteristics of a sealing strip. Nonlinear
compression load-deformation data in the compression process of the vehicle door sealing strip are obtained based on finite
element analysis; a nonlinear
compression load-deformation function relationship of the sealing strip is obtained through segmented spline interpolation;
airflow pressure data of the outer surface of an automobile door are obtained based on computational fluid
mechanics analysis, a flexibility matrix of the position and direction of deformation needing to be solved on the automobile door and the position and direction of an
airflow force acting point is obtained based on finite
element analysis, and the automobile doordeformation amount is iteratively solved through a numerical
analysis method. According to the method, a rapid calculation and evaluation means is provided for
engineering analysis of vehicle door deformation, a numerical
analysis method and basis are provided for compression evaluation and acoustic optimization of the sealing strip. Compared with the prior art, the method has the advantages of being simple in calculation process step, convenient to program, good in universality, high in
engineering practical value and the like.