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首页> 外文期刊>Journal of Mechanical Science and Technology >An investigation in crashworthiness evaluation of aircraft seat cushions at extreme ranges of temperature
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An investigation in crashworthiness evaluation of aircraft seat cushions at extreme ranges of temperature

机译：极端温度范围内飞机座垫的耐撞性评估研究

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This paper obtains a Mathematical Dynamic Model (MADYMO) for occupant lumbar load evaluation under CFR Part 23 and 25 at extreme ranges of temperature. The validation of results is performed by full scale sled test results. Aircraft industries are using viscoelastic polyurethane foams as seat cushion. Visco-elastic foams bring not only more comfort to the passengers in long term sitting but it also maintains more safety during unpredicted crashes and hard landings. Aircraft seat cushions are exposed to varying temperature ranges during their life time. This fact has motivated aircraft industries to evaluate the seat cushion dynamic behavior at extreme ranges of temperatures in addition to what is mentioned in Federal Aviation Administration (FAA) Regulations at room temperature. This research provides a methodology based on simulation and modeling to eliminate, or at least, minimize the number of full scale dynamic sled tests defined by regulations for aircraft seats at extreme ranges of temperature.
机译：本文获得了一个数学动态模型（MADYMO），用于在极端温度范围内的CFR Part 23和25下评估乘员腰部负荷。结果验证是通过完整的雪橇测试结果执行的。飞机工业正在使用粘弹性聚氨酯泡沫作为座垫。粘弹性泡沫不仅可以长期坐着，为乘客带来更多舒适感，还可以在意外撞车和硬着陆时保持更高的安全性。飞机座垫在其使用寿命中会暴露于变化的温度范围。除了联邦航空管理局（FAA）法规在室温下提到的内容外，这一事实还促使飞机行业评估在极端温度范围内的座垫动力学行为。这项研究提供了一种基于仿真和建模的方法，以消除或至少最小化法规在极端温度范围内为飞机座椅定义的满量程动态雪橇测试的数量。

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