Aircraft structure fatigue life rapid evaluation method
The invention belongs to the field of aviation structure fatigue, and particularly relates to an aircraft structure fatigue life rapid evaluation method. According to the method, the fatigue margin curve under different stress ratios and different ground and air stress levels is given through analys...
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| Main Authors | , , , |
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| Format | Patent |
| Language | Chinese English |
| Published |
23.04.2021
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| Subjects | |
| Online Access | Get full text |
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| Summary: | The invention belongs to the field of aviation structure fatigue, and particularly relates to an aircraft structure fatigue life rapid evaluation method. According to the method, the fatigue margin curve under different stress ratios and different ground and air stress levels is given through analysis based on the aircraft design target life and a detail fatigue rated value method, and the method can be used for rapidly evaluating the influence of the structural stress level on the fatigue life in the initial stage of aircraft structural design. The method needs few parameters, is convenient to use, can be used for quickly determining the ground-air crustal stress level, meeting the target life requirement, of various aircrafts at the initial stage of structural design, and can be further used for guiding determination of structural parameters.
本发明属于航空结构疲劳领域，具体涉及一种飞机结构疲劳寿命快速评估方法。本发明的方法以飞机设计目标寿命为基础，基于细节疲劳额定值法，通过分析给出不同应力比、不同地空地应力水平下疲劳裕度曲线，可用于在飞机结构设计初期，快速评估结构应力水平高低对疲劳寿命的影响。本方法所需参数少，使用便捷，可用于快速确定各类飞机在结构设计初期满足目标寿命要 |
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| Bibliography: | Application Number: CN202011599138 |