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A hybrid approach for global sensitivity analysis of FRP composite multi-bolt joints

机译:FRP复合材料多螺栓接头整体灵敏度分析的混合方法

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摘要

This paper presents a hybrid approach for global sensitivity analysis of FRP composite multi-bolt joints. The proposed approach integrates a spring-based analytical model with moment-independent sensitivity analysis. The homogenized properties within the spring-based analytical model are computed by utilizing a novel homogenization technique for FRP composites. The proposed model has been utilized for stochastic sensitivity analysis of a generic double-lap multi-bolt FRP composite joint where, both material and geometric properties are uncertain. The importance of the input parameters with respect to structural responses of the bolted joint has been computed. The proposed approach is found to be highly efficient, even for realistic composite model with significant number of layers. This indicates that the proposed model can be used to save computational time and design effort by identifying the most important design parameters.
机译:本文提出了一种用于FRP复合材料多螺栓接头整体灵敏度分析的混合方法。所提出的方法将基于弹簧的分析模型与独立于力矩的灵敏度分析集成在一起。通过使用针对FRP复合材料的新型均质技术来计算基于弹簧的分析模型内的均质性能。所提出的模型已用于材料和几何特性均不确定的通用双搭接多螺栓FRP复合节点的随机敏感性分析。已经计算出输入参数相对于螺栓接头的结构响应的重要性。发现所提出的方法是高效的,即使对于具有大量层的现实复合模型也是如此。这表明所提出的模型可以通过识别最重要的设计参数来节省计算时间和设计工作量。

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