Method for optimizing contact force of structure by adopting equivalent static displacement

The invention relates to a method for realizing structural contact force optimization by adopting equivalent static displacement, belonging to the field of engineering structure optimization design. The main steps are as follows: firstly, the nonlinear contact analysis of the structure is carried out to obtain the contact force of the joint on the contact surface; secondly, the contact force is applied as a static external load on the node of the original contact surface, and its static displacement is calculated; finally, the static displacement is applied to the node of the contact surface as a constraint of forced displacement, and the constraint reaction force under the linear static condition is optimized. If the optimized structure meets the contact force constraint requirements, theoptimization is stopped, otherwise the above steps are repeated. The invention can rationally optimize the structure involving the contact force and avoid the structural designer from relying excessively on the sensible engi