| 基于Ritz法和ANSYS的振动筛裂纹梁的损伤识别 |
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| 引用本文： | 范欢迎,王荣林,朱艳.基于Ritz法和ANSYS的振动筛裂纹梁的损伤识别[J].煤矿机械,2013,34(2). |
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| 作者姓名： | 范欢迎 王荣林 朱艳 |
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| 作者单位： | 1. 南京理工大学泰州科技学院,江苏泰州,225300
2. 泰州职业技术学院机电学院,江苏泰州,225300 |
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| 摘 要： | 将基于功率平衡原理的Ritz级数法应用到损伤梁计算中,计算出简支梁损伤前后的固有频率和振型,并与有限元软件ANSYS对裂纹简支梁分析出的固有频率和振型进行对比,结果表明2种计算方法得到的固有频率和振型基本吻合,各阶固有频率和振型变化趋势基本吻合,最后通过实验对理论计算结果进行了验证。
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| 关 键 词： | 裂纹简支梁 Ritz级数法 固有频率 模态振型 |
Method of Damage Identification of Crack Simply Beam of Vibration Sieve Based on Ritz Method and ANSYS |
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| Abstract: | Ritz-series method based on principles of power balance will be applied in calculations of crack beam and calculate natural frequency and mode shapes of crack simply supported beam,and contrast with that by ANSYSY,the results show that calculate natural frequencies and mode shapes by two kinds of methods is consistent,all-order natural frequencies and mode shapes are basically same.Finally through experiment to theoretical calculation results are verified. |
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| Keywords: | crack simply beam Ritz-series method natural frequency modal shape |
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