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Multi-Body Peridynamics for Failure Prediction in Rotating Thick Composites

机译:旋转厚复合材料失效预测的多体周动力学

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This study presents the integration of the nonlocal peridynamic theory with the well-established rigid multibody dynamics algorithms to predict material and structural failure modes simultaneously in flexible multibody dynamic systems. Although the existing structural dynamics analysis methods provide accurate dynamic simulation and deformation predictions, they lack the capability to predict material and structural failure initiation and failure modes simultaneously necessary to ensure durability and reliability. This analysis accounts for large elastic deformations coupled with dynamic motion loads without the need of post-processing for failure prediction. The accuracy of this approach is verified against the solutions already available in the literature. It specifically demonstrates damage initiation and growth in rotating composite blades.
机译:这项研究提出了非局部绕动力学理论与成熟的刚性多体动力学算法的集成,以同时预测柔性多体动力学系统中的材料和结构破坏模式。尽管现有的结构动力学分析方法提供了准确的动力学模拟和变形预测,但它们缺乏预测材料和结构破坏引发和破坏模式的能力,而这同时需要确保耐久性和可靠性。该分析说明了大的弹性变形以及动态运动载荷,而无需进行后处理来进行故障预测。通过文献中已有的解决方案验证了这种方法的准确性。它具体演示了旋转复合材料叶片中的损伤萌生和增长。

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