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材料工程  2013 

复合材料层板单钉沉头螺栓连接结构拉伸性能

DOI: 10.3969/j.issn.1001-4381.2013.12.002, PP. 8-12

Keywords: 复合材料层板,单钉沉头螺栓连接,拉伸性能,损伤

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Abstract:

通过ABAQUS软件建立三维累积损伤有限元模型,计算复合材料层板单钉沉头螺栓连接结构的条件挤压载荷,并对其损伤机理与破坏过程进行分析;选用适合该类结构层板的损伤判据与衰减准则进行验证。计算获得的初始挤压破坏载荷与实验结果吻合良好,说明所建模型的有效性。在此基础上,分析了接触面摩擦、螺栓刚度和连接金属板刚度等因素对连接结构拉伸性能的影响。结果表明接触面摩擦因数和螺栓刚度对结构拉伸性能的影响较为明显,金属板刚度的影响很小。

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