聚氨酯弹性体隔板夹层结构的等效参数计算

来源 :第二届中国国际复合材料科技大会 (CCCM-2) | 被引量 : 0次 | 上传用户:sulianlwp
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  本文针对填充了聚氨酯弹性体的隔板加劲夹层结构,阐述了不同等效参数计算方法,并对其等效参数进行了计算。首先讨论和计算了不考虑剪切变形时的整体等效方法,将整体夹层结构等效为正交各向异性薄板,给出了考虑夹芯抗弯刚度的整体刚度系数,并讨论了考虑剪切变形时使用经典理论进行计算所需的各个刚度系数。然后在考虑夹芯剪切变形时的情况下,推导了隔板分隔、并充有聚氨酯弹性体的夹芯层的等效弹性常数,并使用基于应变能密度等效分析的有限元方法也对其进行了计算,结果与理论分析得出的结果相差不大。最后对不同间距隔板的SPS夹层结构进行了等效计算,分析了隔板的间隔距离与夹芯结构等效参数的关系,结果表明,当隔板的间隔与整体夹芯高度的比值达到1000时,可以不考虑隔板的作用。
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