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Reliability analysis of composite wing subjected to gust loads

机译:阵风载荷下复合材料机翼的可靠性分析

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摘要

An aerospace vehicle in atmospheric flight can be exposed to random air turbulence which may cause critical structural failure. Especially, for high aspect ratio wing, the effect of gust becomes more significant and its response to random gust need to be analyzed precisely. In this paper, the reliability analysis is conducted for composite wing subject to gust loads. For this, the probability distribution function of bending moment from random gust is calculated by power spectral analysis and the material properties of composite skin are assumed to be normal random variables to consider uncertainty. With these distributions of random variables, the probability of failure of the wing structure is calculated by Monte Carlo simulation.
机译:大气飞行中的航空航天器可能会暴露于随机的空气湍流中,这可能会导致严重的结构故障。特别是对于高纵横比的机翼,阵风的影响变得更加显着,需要精确分析其对随机阵风的响应。本文对承受阵风载荷的复合材料机翼进行了可靠性分析。为此,通过功率谱分析计算了来自随机阵风的弯矩的概率分布函数,并且考虑到不确定性,假定复合蒙皮的材料属性为正态随机变量。利用随机变量的这些分布,通过蒙特卡洛模拟计算机翼结构的失效概率。

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