An accurate and computationally efficient uniaxial phenomenological model for steel and fiber reinforced elastomeric bearings
An accurate and computationally efficient uniaxial phenomenological model for steel and fiber reinforced elastomeric bearings
复制标题
DOI：
10.1016/j.compstruct.2018.12.017
复制
发表时间：
2019-03
影响因子：
6.3
通讯作者：
N. Vaiana;S. Sessa;F. Marmo;L. Rosati
中科院分区：
文献类型：
--
作者：
N. Vaiana;S. Sessa;F. Marmo;L. Rosati
本文提出了一个单轴唯象模型来准确预测螺栓钢增强弹性支座和无粘结纤维增强弹性支座的复杂滞回性能。所提出的模型是基于一组只有五个参数，直接与图形特性的磁滞回线，导致一个代数方程的解决方案的隔振器恢复力的评估，只需要一个历史变量，并可以很容易地在计算机程序中实现。通过实验测试和数值模拟验证了该模型的有效性。特别是，分析预测的结果进行了比较，从文献中选择的一些实验结果。此外，通过对单自由度机械系统进行非线性时程分析，并将结果与著名Bouc-Wen模型的修改版本进行比较，评估了该模型的数值精度和计算效率。
We present a uniaxial phenomenological model to accurately predict the complex hysteretic behavior of bolted steel reinforced elastomeric bearings and unbonded fiber reinforced elastomeric bearings. The proposed model is based on a set of only five parameters, directly associated with the graphical properties of the hysteresis loop, leads to the solution of an algebraic equation for the evaluation of the isolator restoring force, requires only one history variable, and can be easily implemented in a computer program. The proposed model is validated by means of experimental tests and numerical simulations. In particular, the results predicted analytically are compared with some experimental results selected from the literature. Furthermore, numerical accuracy and computational efficiency of the model are assessed by performing nonlinear time history analyses on a single degree of freedom mechanical system and comparing the results with those associated with a modified version of the celebrated Bouc-Wen model.