CAJ | 학술논문

环形网作为被动柔性防护系统中主要的耗能构件，对其耗能性能的研究显得尤为重要。根据被动柔性防护系统中环形网受到的约束条件，对环形网的计算模型进行了简化处理。采用ANSYS/LS-DYNA软件对环形网进行了动力有限元分析，考察了落石尺寸、冲击速度等因素对环形网耗能性能的影响。分析结果表明：落石的下降距离、最大加速度均随落石直径的增大而减小；落石的直径越小，冲击速度越大，环形网越容易被破坏。动力有限元分析的结论可为环形网在防护工程中的应用提供参考。
배형망작위피동유성방호계통중주요적모능구건，대기모능성능적연구현득우위중요。근거피동유성방호계통중배형망수도적약속조건，대배형망적계산모형진행료간화처리。채용ANSYS/LS-DYNA연건대배형망진행료동력유한원분석，고찰료낙석척촌、충격속도등인소대배형망모능성능적영향。분석결과표명：낙석적하강거리、최대가속도균수낙석직경적증대이감소；낙석적직경월소，충격속도월대，배형망월용역피파배。동력유한원분석적결론가위배형망재방호공정중적응용제공삼고。
Ring net is the main energy dissipation component of the flexible protecting system, therefore it is important to study its energy dissipation performance. This paper simplifies the calculation model of the ring net according to the constraints in passive protecting system. A finite element dynamic simulation is conducted based on the ANSYS/LS-DANY program to analyze the influence on the energy absorbing ability of the ring net which is impacted by the rockfalls of different diameters and velocities. The results show that drop distance and maximum acceleration decrease with the rockfall diameter increasing. When the rockfall diame-ter gets smaller and the impact velocity grons bigger, the ring net will be penetrated easily. The research results can be used as a ref-erence to the application of ring nets on protection engineering.