直线振动筛相似模拟动应力研究
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
对27m2大型直线振动筛的相似试验模型进行了动应力测试,得到了试验模型筛筛体梁、板关键点处的最大动应力应变值。根据量纲分析法和方程分析法推导的工作状态参数相似关系,通过对原型筛与缩小的相似试验模型筛的试验结果对比分析,验证了相似模型与原型试验数据的一致性及可靠性,证实了利用缩小的相似试验模型进行动态测试及分析的有效性。本文结果为提高直线振动筛的使用寿命及结构的优化设计提供了理论依据,也为相似试验模型的发展研究提供了参考。
Dynamic stress test was carried out for a similar experimental model of 27m2 large-scale linear vibrating screen.The maximum dynamic stress and strain at key points on the screen beam,plate of test model were obtained.According to the similar relationship of working parameters deduced from dimensional analysis and equation analysis,through the comparison between experimental results of the prototype of vibrating screen and similar experimental model,the consistency and reliability of the similar experimental model are proved.Thus the validity of the dynamic test and analysis for the cutdown similar experimental model are verified.Above resilts provide theoretical evidence for improving working life and structural optimization of linear vibrating screen.It also provides reference for further development of similar experimental models.
引文
[1]王永岩,邰英楼,孙奇涵.大型直线振动筛动态仿真的研究[J].计算力学学报,2001,18(1):94-98(WANGYongyan,TAI Yinglou,SUN Qihan.Study on the dynamic simulation of the large linear vibration mesh[J].Chinese Journal of Computational Mechanics,2001,18(1):94-98(in Chinese))
    [2]王永岩,张则荣.振动筛试验模型和原型相似试验研究[J].机械工程学报,2011,47(1):101-105(WANGYongyan,ZHANG Zerong.Similar Experimental Stydy of Test Model and Prototype of Vibrating Screen[J].Chinese Journal of Mechanical Engineering,2011,47(1):101-105(in Chinese))
    [3]王雪亮,陆岩.量纲分析法在结构动力试验中的应用[J].国外建材科技,2008,29(1):115-117(WANGXueliang,LU Yan.Applation of Dimension Analysis Method on Dynamic Test[J].Science and Technology ofOverseas Building Materials,2008,29(1):115-117(in Chinese))
    [4]林皋,朱彤,林蓓.结构动力模型试验的相似技巧[J].大连理工大学学报,2000,40(1):1-8(LIN Gao,ZHUTong,LIN Bei.Similarity technique for Dynamic structural model test[J].Journal of Dalin University ofTechnology,2000,40(1):1-8(in Chinese))
    [5]迟世春,林少书.结构动力模型试验相似理论及其验证[J].世界地震工程,2004,20(4):11-20(CHI Shichun,LIN Shaoshu.Validation of similitude laws for dynamic structural model test[J].World Earthquake Engineering,2004,20(4):11-20(in Chinese))
    [6]刘晓燕,于晓光.大型直线振动筛的动力学分析[J].鞍山科技大学学报,2003,26(2):119-122(LIU Xiaoyan,YU Xiaoguang.Dynamic analysis of large linear vibration screen[J].Journal of Anshan University of Science andTechnology,2003,26(2):119-122(in Chinese))
    [7]王永岩,毛会庆,臧琳等.大型直线振动筛动应力分析与模型模态分析[J].选煤技术,2010,1(2):7-10(WANG Yongyan,MAO Huiqing,ZHANG Lin,et al.Analysis of Stress and Model Pattern of Big Size LinearVibration Screen[J].Goal Prepparation Technology,2010,1(2):7-10(in Chinese))
    [8]尹忠俊,刘建平,赵专东.交变载荷作用下大型振动筛的应力分析[J].天津大学学报,2009,11(40):1363-1366(YIN Zhongjun,LIU Jianping,ZHAO Zhuandong.Stress Analysis of Large Vibration Screen UnderAlternate Load[J].Journal of Tianjin University,2009,11(40):1363-1366(in Chinese))

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心