| 边界条件模拟方法对模态分析影响的研究 |
| |
| 引用本文： | 田晶,路闯,艾延廷,周海仑.边界条件模拟方法对模态分析影响的研究[J].科学技术与工程,2013,13(34). |
| |
| 作者姓名： | 田晶 路闯 艾延廷 周海仑 |
| |
| 作者单位： | 沈阳航空航天大学 辽宁省航空推进系统先进测试技术重点实验室 沈阳110136,沈阳航空航天大学 辽宁省航空推进系统先进测试技术重点实验室 沈阳110136,沈阳航空航天大学 辽宁省航空推进系统先进测试技术重点实验室 沈阳110136,沈阳航空航天大学 辽宁省航空推进系统先进测试技术重点实验室 沈阳110136 |
| |
| 基金项目： | 航空科学基金(2012ZB54007) |
| |
| 摘 要： | 准确的模拟边界条件可以提高模态试验的精确度。自由边界条件的模拟主要采用弹性绳悬挂方法和海绵弹性支撑方法。采用多种悬挂方式与弹性支撑方式进行自由模态实验,将试验结果与有限元计算结果进行对比分析。分析结果表明,采用悬挂方式进行自由边界模拟要优于弹性支撑方式模拟。悬挂点数越少对于模态试验结果影响越小,试验结果越精确。
|
| 关 键 词： | 模态分析 边界模拟 阻尼比 |
| 收稿时间： | 2013/7/14 0:00:00 |
| 修稿时间： | 2013/11/13 0:00:00 |
Study on the effects of simulation method of condition boundary on modal analysis |
| |
| TIAN Jing,LU Chuang,AI Yan-ting and ZHOU Hai-lun.Study on the effects of simulation method of condition boundary on modal analysis[J].Science Technology and Engineering,2013,13(34). |
| |
| Authors: | TIAN Jing LU Chuang AI Yan-ting and ZHOU Hai-lun |
| |
| Institution: | Shenyang Aerospace University,Liaoning Key Laboratory of Advanced for Aeronautical Propulsion Test Technology System,China Shenyang 110136,Shenyang Aerospace University,Liaoning Key Laboratory of Advanced for Aeronautical Propulsion Test Technology System,China Shenyang 110136,Shenyang Aerospace University,Liaoning Key Laboratory of Advanced for Aeronautical Propulsion Test Technology System,China Shenyang 110136 |
| |
| Abstract: | Accurately simulate boundary conditions can improve the accuracy of modal testing. Simulation of free boundary condition mainly adopts elastic rope hanging method and sponge elastic supporting method. Using a variety of hanging method and elastic supporting method conduct free modal experiment, compare test results with finite element calculation result were analyzed. Analysis results show that using hanging method conduct free modal experiment is better than simulation of elastic supporting method. The fewer suspension points, the smaller influences on modal test results, the test results are more accurate. |
| |
| Keywords: | Modal Analysis Similitude of Condition Boundary damping ratio |
|
| 点击此处可从《科学技术与工程》浏览原始摘要信息 |
| 点击此处可从《科学技术与工程》下载免费的PDF全文 |
|
