| 大型冷锯机切噪声声功率的预估 |
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| 引用本文： | 马建敏,吕景林,黄协清,陈天宁.大型冷锯机切噪声声功率的预估[J].应用力学学报,2001,18(3):28-32. |
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| 作者姓名： | 马建敏 吕景林 黄协清 陈天宁 |
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| 作者单位： | 1. 西安理工大学
2. 西安交通大学 |
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| 基金项目： | 陕西省教育委员会专项科研计划资助项目(99JK178) |
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| 摘 要： | 通过对大型冷锯机锯切过程中主要声源及受力分析，明确了主要锯切噪声是由锯齿脉冲激励引起锯片和工件的局部高频振动所产生的。并用大型有限元结构分析软件ANSYS计算得到的单元速度值，根据结构振动声辐射理论，对冷锯机的锯切噪声进行了定量预估。从理论预估值与现场锯切噪声实测结果的比较可见，本文所建立的大型冷锯机锯切噪声分析及预估理论是正确的。
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| 关 键 词： | 大型冷锯机 锯切噪声 声功率预估 ANSYS软件 |
| 文章编号： | 1000-4939(2001)03-0028-05 |
| 修稿时间： | 2000年7月20日 |
Prediction of Cutting Noise Sound Power from Large Size Cold Saw Machine |
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| Abstract: | Analysis of the main sound sources and action force of large size cold saw mach ine in cutting process indicates that main cutting noise is induced by local hig h frequency pulse vibration of saw teeth and workpiece. Using large scale finite element analysis software ANSYS, the speed response of saw teeth and workpiece at different locations and different times are obtained under the action of sawt ooth periodic pulses. According with structural sound radiation theory, the quan titative prediction of radiation sound power of saw teeth and workpiece is carri ed out. The theoretical predicted values good agree with the results of testing measured. It is proved that the quantitative predicting theory for cutting noise of large size cold saw machine is correct. |
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| Keywords: | large-sized cold waw machine cutti ng noise sound power prediction ANSYS software |
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