首页> 外文会议>Fifth International Conference on Analysis of Discontinuous Deformation, ICADD-5 Oct 6-10, 2002 Beer Sheva, Israel >Experimental validation of combined FEM/DEM simulation of R.C. beams under impact induced failure
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Experimental validation of combined FEM/DEM simulation of R.C. beams under impact induced failure

机译:对R.C.的FEM / DEM组合模拟的实验验证冲击破坏下的梁

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A combined finite/discrete element model for the pre-failure and po ;t failure transient dynamics of a reinforced concrete structure has been developed. The numerical model uses a simple element already successfully tested for the case of static loading. In this paper, the accuracy of this simple element is assessed under dynamic loading conditions using beam impact experiments undertaken at the Swiss Federal Institute of Technology. The results obtained from these experiments include deflection-time cu ves for various points along the beam and the deflection pattern for the beam throughout the loading period. The results of this validation process have indicated that this relatively simple element is able to accurately predict both failure mode and failure criteria for dynamic loading conditions. In previous work it has already been proved that the same applies to static loading conditions. Thus this element is suitable for both static and dynamic analysis of failure, fracture and/or fragmentation of a beam or column type structural elements due to hazardous loading conditions. It is worth mentioning that the work is a part of a larger research undertaking aimed at the combined finite/discrete element modeling of structural failure and collapse due to hazardous loads.
机译:建立了钢筋混凝土结构破坏前和破坏后瞬态动力学的有限元/离散元模型。数值模型使用一个已经成功测试静态载荷情况的简单元素。在本文中,该简单元素的精度是在动态载荷条件下使用瑞士联邦理工学院进行的射束冲击实验评估的。从这些实验获得的结果包括沿梁的各个点的挠曲时间曲线,以及在整个加载期间梁的挠曲模式。验证过程的结果表明,该相对简单的元素能够准确预测动态加载条件下的失效模式和失效标准。在先前的工作中,已经证明相同的条件适用于静态载荷条件。因此,该单元适用于由于危险载荷条件而引起的梁或柱型结构单元的破坏,断裂和/或断裂的静态和动态分析。值得一提的是,这项工作是一项大型研究工作的一部分,该研究旨在对结构破坏和危险荷载引起的倒塌进行有限元/离散元建模。

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