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为了评估飞行器拦停系统性能以及拦停网强度裕度,采用非线性动力学有限元方法模拟了飞机拦停系统的工作过程,考虑了飞机外形、飞机和捕获装置间的相互作用、捕获装置重量、材料性能等因素对拦停过程的影响,解决了建立有限元模型、添加边界条件以及计算中非线性因素多,收敛困难等关键技术问题,获得了捕获装置在工作过程中应力的演化规律,完成了捕获装置拦停性能验证以及拦停系统结构强度、裕度评估.通过将理论分析结果与试验数据对比后表明:该方法可用于评估拦停系统拦停效率并预测捕获系统的强度储备,为今后设计拦停系统提供有效的分析方法.
In order to evaluate the performance of the aircraft’s stopping system and the strength of barricade barrier, the nonlinear kinematic finite element method was used to simulate the working process of the aircraft’s stopping system. The aircraft’s shape, the interaction between the aircraft and the capturing device were taken into consideration, and the weight of the capturing device , Material properties and other factors on the process of stopping and stopping, and solved the key technical problems such as establishing finite element model, adding boundary conditions, calculating non-linear factors and difficulties in convergence, and obtained the evolvement rules of stress during the operation of the capturing device, The performance of the arresting device was verified and the structure strength and margin of the stopping system were evaluated.By comparing the theoretical analysis with the experimental data, it was shown that this method can be used to evaluate the stopping efficiency of the stopping system and predict the strength reserve of the capturing system, For the future design of stop system to provide an effective analysis.