Research on Evaluation Method for Bird Impact Resistance of Civil Aircraft Side Panels

Abstract

Purposes Bird impact resistance has always been one of the important testing factors for aircraft airworthiness. In order to explore the bird impact resistance performance of civil aircraft nose side panel, three methods of rivet failure ratio assessment, energy method, and residual bearing capacity assessment are used to evaluate. Methods The effectiveness of the numerical model was verified by simulating the bird impact behavior of three types of side wall panels by using PAM-CRASH software, and the reliability of the above method was evaluated according to the bird impact failure of the three test specimens. Findings The research results indicate that the lower the proportion of rivet failures, the better the bird impact resistance of the structure; When the proportion of rivet energy absorption increases and the proportion of skin energy absorption decreases, the anti-bird-collision performance of the structure is improved; Among the above methods, the residual bearing capacity evaluation method can realize quantitative analysis of the bird impact resistance performance. The lower the damage factor value, the better the bird impact resistance performance of the side wall panel. Conclusions By summarizing the applicability and limitations of the bird impact performance evaluation method for side wall panels, this work provides valuable reference for the safety design and research and development of later civil aircraft.

Keywords

• bird impact
• side wall panels
• pam-crash
• rivet
• residual strength