基于仿真分析的直升机座椅静强度研究

Research on Static Strength of Helicopter Seat Based on Simulation Analysis

直升机座椅的抗坠毁性能是保护驾驶员的重要保障之一,座椅的静强度与动强度性能是衡量座椅可靠性的重要指标。本文以座椅静强度性能为出发点,以某型直升机座椅为例,根据适航要求设计了基于不同加载方向的座椅静强度测试试验。为进一步计算评估座椅的静强度性能,基于有限元分析方法,通过Abaqus对座椅的静载荷加载试验进行了模拟,分析了该座椅在不同加载条件下的变形量、Mises应力分布与材料损伤情况,通过仿真与试验结果相结合的方式验证了该型机座椅的可靠性,并为直升机座椅的性能模拟计算提供了有力的技术支撑。

The crash resistance of helicopter seat is one of the important guarantees to protect the driver,and the static strength and dynamic strength performance of the seat are important indicators to measure the reliability of the seat.Taking a certain helicopter as an example,this paper designs a seat static strength test based on different loading directions according to the airworthiness requirements by taking the strength performance of seat as the starting point.In order to further calculate and evaluate the static strength performance of the seat,the static load loading test of the seat was simulated by Abaqus based on the finite element analysis method.By combining simulation and test results,the deformation,Mises stress distribution and material damage of the seat under different loading conditions are analyzed,which verifies the reliability of the seat and provides a strong technical support for the performance simulation calculation of the helicopter seats.