Reliability Optimization Design of Anti-Penetration Perforated Armor

Perforated armor can effectively reduce weight while meeting anti-penetration performance. Structural lightweight design of perforated armor has practical engineering significance. Considering the influence of uncertain factors, a reliability optimization design of a perforated armor was realized in this research. In the process of the reliability optimization design, the light weight of the perforated armor was taken as the goal of the design, and the anti-penetration performance was taken as the constraint condition. The optimal Latin hypercube design method was used to generate sample points. Based on a development of the commercial software ANSYS, the parametric modeling and the response calculation of the anti-penetration simulation of the perforated armor were realized. The Kriging surrogate model and the expected improvement maximization method were introduced to construct the performance functions. The sequential optimization and the reliability assessment method were applied in the reliability optimization design of the perforated armor. Under the premise of meeting the anti-penetration performance requirements and having a related reliability indicator of 0.9, the weight of the perforated armor after the reliability optimization can be effectively reduced by 11.5%. The research can provide references for the reliability optimization design of other anti-penetration structures.