ELONGATION AND IMPACTING EXPERIMENTAL SYSTEM FOR BOLTS WITH CONSTANT RESISTANCE AND LARGE DEFORMATION AND FINITE ELEMENT ANALYSIS
HE Manchao1,LI Chen1,2,GONG Weili1,2
(1. State Key Laboratory for Geomechanicsand Deep Underground Engineering,China University of Mining and Technology,
Beijing 100083,China;2. School of Mechanics and Civil Engineering,China University of Mining and Technology,
Beijing 100083,China)
Abstract:The elongation and impacting experimental system was used to study the dynamic mechanical properties of the constant resistance and large deformation(CRLD) bolts,such as the impacting force,the expansion and elongation of one type of CRLDs. The negative Poisson?s ratio effect was verified and the experimental results were compared with the ones from finite element analysis(FEA). The experimental results showed that the bolt absorbed the impact energy through a process of elastic-plastic structural deformation with the unique negative Poisson?s ratio effect and was well adapted to the dynamic impacting process. The FEA results were matched with the experiment ones,which not only confirmed the accuracy of the FEA method,but also verified the feasibility of using FEA method to prove or substitute the experiment.
何满潮1,李 晨1,2,宫伟力1,2. 恒阻大变形锚杆冲击拉伸实验及其有限元分析[J]. 岩石力学与工程学报, 2015, 34(11): 2179-2187.
HE Manchao1,LI Chen1,2,GONG Weili1,2. ELONGATION AND IMPACTING EXPERIMENTAL SYSTEM FOR BOLTS WITH CONSTANT RESISTANCE AND LARGE DEFORMATION AND FINITE ELEMENT ANALYSIS. , 2015, 34(11): 2179-2187.
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