论文部分内容阅读
传统的飞机风挡设计通常在确定的工况下进行,未能充分考虑实际鸟撞风挡过程中不确定性因素的影响,导致飞机鸟撞风挡的故障多发。综合考虑鸟撞飞机风挡过程中鸟体材料参数、质量、撞击速度等不确定因素的影响,以飞机风挡抗鸟撞的可靠度为约束,风挡质量为目标,基于双循环方法和近似技术建立了风挡抗鸟撞可靠性优化设计系统,利用一阶矩法进行可靠性分析,对某飞机风挡进行了基于可靠性的优化设计。实例分析证明所建风挡抗鸟撞可靠性优化设计系统可行有效。
Traditional aircraft windshield design is usually carried out under certain operating conditions, failing to take full account of the impact of uncertainties in the actual bird-to-windshield process, resulting in multiple failures of the aircraft bird bump. Considering the uncertainties of bird material parameters, mass and impact velocity in the course of bird crashes, the reliability of aircraft windshield is considered as the constraint and the windshield quality is the goal. Based on the double cycle method and approximate technique Windshield anti-bird collision reliability optimization design system, the use of first-moment method for reliability analysis of a certain aircraft windshield based on the reliability of the optimal design. The case study proves that the windshield anti-bird strike reliability optimization design system is feasible and effective.