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大型冲压车间现场环境振动测试与分析

发表时间:2017-07-31  浏览量:172  下载量:24
全部作者: GARAU Pere,赵斌,杨彪,蔡琪锐
作者单位: 同济大学土木工程学院;上海市机电设计研究院有限公司
摘 要: 大型冲压车间在其运营过程中会诱发较大的环境振动,影响周围精密仪器的正常工作。以一大型冲压车间为例,测试4种工况下冲压车间及周围地面的加速度反应,对比各工况下测点加速度反应的峰值和有效值,确定最不利工况。通过统计学的方法,在频域中过滤掉环境噪声的干扰,得到振动在频域中的衰减特性。通过对测试数据的拟合,得到该车间环境振动Z振级在土体中衰减的经验公式。最后,讨论并评价该车间所采取相关减振措施的有效性。结果表明,采用这些减振措施可以有效地减小车间的环境振动,保证附近精密仪器设备正常工作。
关 键 词: 土木建筑结构;环境振动;现场测试;传播和衰减规律;减振措施
Title: On-stie testing and analysis of environmental vibration induced by large scale punching machine
Author: GARAU Pere, ZHAO Bin, YANG Biao, CAI Qirui
Organization: School of Civil Engineering, Tongji University; Shanghai Institute of Mechanical & Electrical Engineering Co., Ltd.
Abstract: Large scale punching machine under running will induce great environmental vibration, which may interrupt the normal usage of some precision instruments around. Based on a large scale of punching workshop, the acceleration responses of test points on the workshop and surrounding ground are tested under 4 different working conditions. The most unfavorable condition is determined by comparing the peak and RMS of accelerations. The ambient noise is filtered out with statistical method and vibration damping characteristics in the frequency domain are obtained. The empirical formula of the VLZ attenuation in the field is acquired by fitting the test data. At last, the effectiveness of some measures which are taken to reduce the vibration is discussed and evaluated. The results show that these damping measures can reduce the environmental vibration effectively and make sure the instruments remaining normal work in the case of the punching machine under operation.
Key words: civil engineering structure; environmental vibration; on-site testing; transfer and attenuation laws; measure of vibration mitigation
发表期数: 2017年7月第14期
引用格式: GARAU Pere,赵斌,杨彪,等. 大型冲压车间现场环境振动测试与分析[J]. 中国科技论文在线精品论文,2017,10(14):1621-1628.
 
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