Computationally efficient 3D finite element modeling of RC structures
Computationally efficient 3D finite element modeling of RC structures
复制标题
RC 结构的高效计算 3D 有限元建模
DOI：
10.12989/cac.2013.12.4.443
复制
发表时间：
2013
影响因子：
4.1
通讯作者：
M. Papadrakakis
中科院分区：
文献类型：
--
作者：
G. Markou;M. Papadrakakis
详细的有限元建模的钢筋混凝土结构的非线性行为的模拟，管理预测的非线性行为的四个不同的实验装置的计算效率，鲁棒性和准确性。所提出的建模方法使用8节点六面体等参单元来离散混凝土。钢筋可以在实体混凝土元素内具有任何方向，从而允许模拟纵向和横向钢筋。混凝土开裂处理的涂抹裂缝的方法，而钢筋建模与自然的梁柱柔性为基础的元素，考虑剪切和弯曲刚度。所提出的建模的性能表现出与现有的实验和数值结果在文献中，以及与商业代码的数值预测进行比较。结果表明，所提出的精细模拟准确预测钢筋混凝土结构的非线性非弹性行为，实现数值鲁棒性和计算效率。
A detailed finite element modeling is presented for the simulation of the nonlinear behavior of reinforced concrete structures which manages to predict the nonlinear behavior of four different experimental setups with computational efficiency, robustness and accuracy. The proposed modeling method uses 8-node hexahedral isoparametric elements for the discretization of concrete. Steel rebars may have any orientation inside the solid concrete elements allowing the simulation of longitudinal as well as transverse reinforcement. Concrete cracking is treated with the smeared crack approach, while steel reinforcement is modeled with the natural beam-column flexibility-based element that takes into consideration shear and bending stiffness. The performance of the proposed modeling is demonstrated by comparing the numerical predictions with existing experimental and numerical results in the literature as well as with those of a commercial code. The results show that the proposed refined simulation predicts accurately the nonlinear inelastic behavior of reinforced concrete structures achieving numerical robustness and computational efficiency.