| 模拟裂纹的弯曲弹簧模型比较 |
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| 引用本文： | 郭智刚,陶海峰.模拟裂纹的弯曲弹簧模型比较[J].上海应用技术学院学报,2015,15(4):362-366. |
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| 作者姓名： | 郭智刚 陶海峰 |
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| 作者单位： | 上海应用技术学院 轨道交通学院，上海201418;山东省济南市公路管理局，济南 250013 |
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| 基金项目： | 铁道部科技研究开发计划资助项目（2012G003-E）；上海应用技术学院引进人才科研启动项目（YJ2014-37） |
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| 摘 要： | 合适的裂纹模型模拟能够真实反映梁裂纹的力学机理.首先分析了4种模拟裂纹的弯曲弹簧模型,然后以自由梁为例计算了4种弯曲弹簧模型下的固有频率值,并与实验结果进行对比.分析了4种弯曲弹簧模型模拟裂纹损伤的相对误差,结果表明,4种裂纹模型均可靠,能很好地模拟梁的裂纹损伤.弯曲弹簧模型III模拟裂纹的相对误差最小,建议采用此弹簧模型模拟裂纹损伤.
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| 关 键 词： | 裂纹 弯曲弹簧模型 模拟 相对误差分析 |
The Comparison of Rotational Spring Model of Crack Simulation |
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| GUO Zhigang and TAO Haifeng.The Comparison of Rotational Spring Model of Crack Simulation[J].Journal of Shanghai Institute of Technology: Natural Science,2015,15(4):362-366. |
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| Authors: | GUO Zhigang and TAO Haifeng |
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| Institution: | School of Railway Transportation, Shanghai Institute of Technology, Shanghai 201418, China;iNan Road Administer Bureau, Jinan 250013, China |
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| Abstract: | Suitable crack model can reflect real mechanics mechanism of cracked beam. Four rotational spring models for simulating crack were analyzed. Natural frequencies of free-free cracked beams under four rotational spring models were calculated, which was compared with the experimental results. Meanwhile, the relative errors under four rotational spring models were analyzed. The results showed that the four cracked models could better simulate crack. The relative error of third rotational spring model was the smallest and was recommended to simulate the crack damage. |
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| Keywords: | crack rotational spring model simulate relative error analysis |
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