有力筋块体自由摇摆振动恢复系数有限元分析
FEM Analysis of Restitution Coefficient of Free Rocking Block with Tendon
DOI: 10.12677/HJCE.2018.75086, PDF,    国家自然科学基金支持
作者: 梁艳苹*, 苏小卒：同济大学土木工程学院建筑工程系，上海
关键词: 块体；自由摇摆振动；恢复系数；力筋；ABAQUS；Block； Free Rocking； Coefficient of Restitution； Tendon； ABAQUS
摘要: 采用ABAQUS数值模拟方法，建立了有力筋块体自由摇摆振动的数值模型，以块体的高宽比、力筋刚度、初始位移为分析参数，研究了不同参数水平下块体自由摇摆振动的恢复系数。研究发现恢复系数具有一定的随机离散性；高宽比对恢复系数有显著影响，力筋的施加以及初始位移的大小对恢复系数几乎没有影响；恢复系数的理论值，可以直接用于高瘦型块体的计算，但对矮胖型块体的计算则误差较大。给出了不同情况下恢复系数的试验平均值，可供计算时参考。
Abstract: The values of coefficient of restitution (COR) of free rocking blocks with tendons were investigated by establishing numerical models using ABAQUS. The analysis parameters were the aspect ratio, tendon stiffness, and initial displacement. The results reveal that the COR showed some random nature. The aspect ratio had a significant effect on the COR, however the tendon stiffness and the initial displacement had little effect on the COR. The theoretical COR formula was accurate enough for slender blocks, but showed larger errors for dumpy blocks. The average values of COR for cases covered in this paper were given for reference use in related calculations.
文章引用：梁艳苹, 苏小卒. 有力筋块体自由摇摆振动恢复系数有限元分析[J]. 土木工程, 2018, 7(5): 725-733. https://doi.org/10.12677/HJCE.2018.75086

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