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A practical approach for evaluating safe fatigue life of hydraulic actuator in helicopter based on a nominal force concept and minimal datasets

机译：基于标称力概念和最小数据集的评估直升机液压执行器安全疲劳寿命的实用方法

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摘要

A practical approach was developed to evaluate fatigue lives of hydraulic actuators in helicopter. The approach is informed by the paucity of experimental dataset for structural fatigue characteristics of hydraulic actuator. On the basis of available fatigue design knowledge, the structural fatigue characteristics of hydraulic actuator was depicted based on a nominal force concept from the paucity of experimental dataset, and safe fatigue life of hydraulic actuator subjected to actual random spectrum load. history was modelled based on a reliability concept. Fatigue tests were conducted on three hydraulic actuators subjected to step constant amplitude loading. Finally, the concepts were applied to experimental data, demonstrating the practical and effective use of the proposed method. (C) 2016 Elsevier Masson SAS. All rights reserved.
机译：开发了一种实用的方法来评估直升机中液压执行器的疲劳寿命。该方法是由于缺乏用于液压执行器的结构疲劳特性的实验数据集而获得的。根据现有的疲劳设计知识，从缺乏实验数据集的名义力概念出发，描述了液压执行器的结构疲劳特性，以及在实际随机频谱载荷下液压执行器的安全疲劳寿命。历史是根据可靠性概念建模的。对三个液压步进执行器进行了疲劳测试，这些步进步进电机承受了恒定的振幅加载。最后，将这些概念应用于实验数据，证明了该方法的实际和有效使用。 （C）2016 Elsevier Masson SAS。版权所有。

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