| 高强度锚杆冲击吸收功与失效应变关系的数值仿真研究 |
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| 引用本文： | 李中伟,鞠文君. 高强度锚杆冲击吸收功与失效应变关系的数值仿真研究[J]. 煤矿开采, 2013, 18(1): 50-53 |
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| 作者姓名： | 李中伟 鞠文君 |
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| 作者单位： | 煤炭科学研究总院开采设计研究分院,北京100013;天地科技股份有限公司开采设计事业部,北京100013 |
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| 基金项目： | 国家自然科学基金委员会与神华集团有限责任公司联合资助项目(U1261211);国家科技支撑计划课题:矿井冒顶与地压灾害防治技术及示范(2012BAK04B06) |
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| 摘 要： | 采用LS-DYNA数值模拟软件,以实验室金属夏比冲击试验的实际情况为依据,仿真模拟了金属夏比冲击试验,通过选择合理的网格尺寸、准确的材料模型和边界条件,使模拟结果真实、可靠。通过模拟屈服强度相同时不同失效应变对应的冲击吸收功值,得出了屈服强度为500MPa,600MPa的锚杆钢材失效应变与冲击吸收功的线性关系式,通过反推法得出屈服强度为500MPa,600MPa的锚杆钢材特定冲击吸收功下失效应变的值,为今后不同冲击吸收功的高强度锚杆在动载荷下受力与变形的仿真研究提供了依据。
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| 关 键 词： | 高强锚杆 LS-DYNA 失效应变 冲击吸收功 数值仿真 |
Numerical Simulation of Relationship of Impact Absorbed Power and Failure Strain of Anchored Bolt with High Strength |
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| LI Zhong-wei , JU Wen-ju. Numerical Simulation of Relationship of Impact Absorbed Power and Failure Strain of Anchored Bolt with High Strength[J]. Coal Mining Technology, 2013, 18(1): 50-53 |
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| Authors: | LI Zhong-wei JU Wen-ju |
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| Affiliation: | 1,2(1.Coal Mining & Designing Branch,China Coal Research Institute,Beijing 100013,China; 2.Tiandi Science & Technology Co.,Ltd.,Beijing 100013,China) |
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| Abstract: | Metal Charpy impact was simulated by LS-DYNA numerical simulation software on the basis of experimental metal Charpy impact.Rational mesh,correct material model and boundary condition made simulation result real and reliable.Simulation results provided linear relationship equations of failure strain and burst absorbed power of steel whose yield strength were 500 and 600MPa and failure strain values of steel with some impact absorbed power were obtained.This provided reference for stress and deformation simulation research of anchored bolts with different impact absorbed powers under dynamic load. |
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| Keywords: | anchored bolt with high strength LS-DYNA failure strain burst obsorbed power numerical Simulation |
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