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首页> 外文期刊>Shock and vibration >Dynamic Finite Element Analysis of a New Type Flexible Rock Shed under the Impact of Rock Block and Improving the Design
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Dynamic Finite Element Analysis of a New Type Flexible Rock Shed under the Impact of Rock Block and Improving the Design

机译：新型柔性挡岩块体的动力有限元分析及改进设计。

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摘要

A 11 flexible rock shed made of flexible nets and steel-vaulted structure is manufactured and tested for functional evaluation with impact experiment previously. To further discuss the performance of this structure under the impact of rockfalls and to improve the design, numerical simulation for this structure is carried out in this paper. Firstly, the simplified numerical models for characterizing the mechanical behavior of the ring nets and wire meshes are deduced. Then, a detailed finite element model for the flexible rock shed is developed for impact analysis. By comparing the experimental data, the numerical model for the flexible rock shed is shown to be reliable in predicting the dynamic behavior of the flexible rock shed. Finally, combined with the numerical simulation results and experimental results, an improved design is presented, and the numerical simulation results show that the energy dispersion in the improved design of the rock shed is more equalized, and damages on the steel-vaulted structure are much improved.
机译：制造了11个由柔性网和钢拱形结构制成的柔性岩石棚，并通过冲击试验对其进行了功能评估。为了进一步讨论该结构在落石冲击下的性能并改善设计，本文对该结构进行了数值模拟。首先，推导了表征环网和丝网力学性能的简化数值模型。然后，为挠性棚建立了详细的有限元模型，以进行影响分析。通过比较实验数据，表明柔性岩石棚的数值模型在预测柔性岩石棚的动力学行为方面是可靠的。最后，结合数值模拟结果和实验结果，提出了一种改进的设计方案，数值模拟结果表明，改进后的岩棚设计中的能量分散更加均匀，对钢拱形结构的破坏也很大。改善。

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