‘A Finite Element Model of a UHPC Beam Reinforced with HSS Bars
‘A Finite Element Model of a UHPC Beam Reinforced with HSS Bars
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DOI：
10.1109/icmsao.2019.8880414
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发表时间：
2019-04
期刊：
影响因子：
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通讯作者：
Omar R. Abuodeh;F. Abed
中科院分区：
文献类型：
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作者：
Omar R. Abuodeh;F. Abed
建立了高强钢筋超高性能混凝土梁的三维非线性有限元模型。超高强度混凝土和高速钢的力学参数是从两个不同研究的试验测试中获得的。结果，这些参数被应用到有限元软件ABAQUS中，并能够模拟梁中实现的UHPC和HSS筋的非线性行为。进行了网格敏感性分析，以获得足够的网格大小，使分析收敛，同时避免任何计算复杂性。然后，通过使用Python编写的宏来进行参数研究，该宏命令CAE环境改变梁的高度和含钢率。这使得作者能够研究改变梁的高度和含钢率对其弯矩-挠度响应的影响。结果表明，影响有限元模型精度的主要参数是超高性能混凝土梁的高度。
This paper presents a three-dimensional nonlinear Finite Element (FE) model of an Ultra-High Performance Concrete (UHPC) beam reinforced with High-Strength Steel (HSS) bars. The UHPC and HSS mechanical parameters were acquired from experimental tests of two distinct studies. As a result, these parameters were employed in an FE software package, Abaqus, and were able to simulate the nonlinear behavior of UHPC and HSS bars implemented in beams. A mesh sensitivity analysis was performed to obtain a sufficient mesh size that allowed the analysis to converge while avoiding any computation complexities. Afterwards, a parametric study was conducted by employing a Python-written macro that commanded the CAE environment to vary the beam's depth and steel ratio. This allowed the authors to investigate the impacts of varying the beam's depth and steel ratio on its moment-deflection response. It was concluded that the main parameter contributing to the accuracy of the FE model was the depth of the UHPC beam.