Multi-cell energy absorption structure combination optimization design method

The invention discloses a multi-cell energy absorption structure combination optimization design method, which comprises the following steps: establishing a multi-cell energy absorption structure finite element model according to a material to be optimized, and determining a design variable, a constraint condition and an optimization target; carrying out an orthogonal experiment according to the established three-level design variable table of the variables and an optimization target; establishing a target response data matrix, and performing Taguchi analysis on the target response data matrix; performing grey correlation analysis based on the normalized signal-to-noise ratio sequence of each response to obtain a grey correlation coefficient sequence corresponding to each response; determining a preliminarily optimized variable combination to realize rapid positioning of a preliminarily optimized result in a large space; selecting a significant influence variable and carrying out secondary optimization by usi