复合材料直升机平台板弯曲性能试验与仿真分析

Bending Performance Test and Simulation Analysis of Composite Helicopter Platform Plate

  • 摘要: 直升机平台是用于直升机起降的场地。根据平台在直升机起降工况下的承载特点,自主研发了一种复合材料直升机平台板,采用通用有限元软件建立了复合材料平台板的力学仿真模型,计算表明平台板的最大位移和应变均在合理范围内。对实际安装状态下复合材料平台板试样进行弯曲性能试验,测试数据与仿真结果基本一致,验证了有限元计算方法的准确性。在此基础上,针对复合材料平台板的弯曲性能试验环节,从增强材料弹性模量、支撑方式、螺栓预紧力三个方面研究了不同因素对平台板弯曲性能的影响,研究结果可为直升机平台的结构设计提供参考。

     

    Abstract: Helicopter platform is used for the take-off and landing of helicopter. According to the bearing characteristics of platform under helicopter take-off and landing conditions, a composite helicopter platform plate is independently developed. The mechanical simulation model of composite platform plate is established by using general finite element software. The calculation results show that the maximum deflection and strain of platform plate are within reasonable ranges. The bending performance test of the composite platform plate sample in the actual installation state is carried out, and the test data are basically consistent with the simulation results, which verifies the accuracy of the finite element calculation method. On this basis, aiming at the bending performance test of the composite platform plate, the influences of different factors on the bending performance of platform plate are studied from the respective of reinforcing material modulus, test support mode and bolt preload. The research results can provide references for the structural design of helicopter deck.

     

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