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A methodology for the structural analysis of composite wind turbine blades under geometric and material induced instabilities

机译:几何和材料引起的不稳定性下复合材料风力涡轮机叶片结构分析的方法

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The objective of this work is to develop a modeling strategy for the structural analysis of large three-dimensional laminated composite structures undergoing geometric and material induced instability. A sub-modeling approach is used with multiple mixed-mode linear-softening cohesive elements and linear-elastic solid-shell elements through the thickness. A localized sub-plane control strategy is adopted for tracking multiple crack formations and the propagation of multiple delamination fronts. Simple element and solver benchmarks are used to demonstrate the adopted methods. Finally, the adopted methods are demonstrated in an engineering case study of a generic laminated composite wind turbine blade.
机译:这项工作的目的是开发一种建模策略,用于对承受几何和材料引起的不稳定性的大型三维层压复合结构进行结构分析。在整个厚度范围内,将子模型方法与多个混合模式线性软化内聚单元和线性弹性固体壳单元一起使用。采用局部子平面控制策略来跟踪多个裂纹形成和多个分层前沿的传播。简单元素和求解器基准用于演示所采用的方法。最后,在通用层压复合风力涡轮机叶片的工程案例研究中证明了所采用的方法。

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