1、Simcenter 模态试验在623所应用09.25.2018Page 2Simcenter 模态试验解决方案Simcenter Advances on Modal Testing机箱种类Mainframe单系统容量System Channels采集精度Accuracy采集方式Acquisition可测类型Physical Quantity西门子数据采集硬件Siemens Hardware西门子试验分析软件Siemens Software西门子测试平台Siemens Test Platform模态试验Structure旋转机械Rotating Machinery疲劳试验Durability环境
2、试验Environmental声学试验Acoustic09.25.2018Page 3Simcenter 模态试验解决方案Simcenter Advances on Modal Testing机箱种类Mainframe单系统容量System Channels采集精度Accuracy采集方式Acquisition可测类型Physical Quantity西门子数据采集硬件Siemens Hardware西门子试验分析软件Siemens Software西门子测试平台Siemens Test Platform模态试验Structure旋转机械Rotating Machinery疲劳试验Durabi
3、lity环境试验Environmental声学试验Acoustic09.25.2018Page 4Simcenter 模态试验解决方案Simcenter Advances on Modal Testing机箱种类Mainframe单系统容量System Channels采集精度Accuracy采集方式Acquisition可测类型Physical Quantity模态试验Structure旋转机械Rotating Machinery疲劳试验Durability环境试验Environmental声学试验Acoustic西门子数据采集硬件Siemens Hardware西门子试验分析软件Sieme
4、ns Software西门子测试平台Siemens Test Platform09.25.2018Page 5Simcenter 模态试验解决方案Simcenter Advances on Modal Testing西门子测试平台Siemens Test Platform机箱种类Mainframe单系统容量System Channels采集精度Accuracy采集方式Acquisition可测类型Physical Quantity模态试验Structure旋转机械Rotating Machinery疲劳测试Durability环境试验Environmental声学测试Acoustic西门子数据
5、采集硬件Siemens Hardware西门子试验分析软件Siemens Software09.25.2018Page 6Simcenter 模态试验解决方案Simcenter Advances on Modal Testing测试方法Measurement模态原理Theory模态试验（测试和分析）Structure Testing&Analysis基本假设Hypothesis分析方法Analysis西门子试验分析软件Siemens Software09.25.2018Page 7Simcenter 模态试验解决方案Simcenter Advances on Modal Testing测试方法
6、Measurement模态原理Theory模态试验（测试和分析）Structure Testing&Analysis基本假设Hypothesis分析方法Analysis西门子试验分析软件Siemens Software09.25.2018Page 8Simcenter 模态试验解决方案Simcenter Advances on Modal Testing机翼颤振Flutter西门子试验分析软件Siemens Software卡门涡街Karman vortex street频率公式09.25.2018Page 9Simcenter 模态试验解决方案Simcenter Advances on Mo
7、dal Testing西门子试验分析软件Siemens Software结构响应Response频响函数FRF激励源Source=X=X=X!输入频带范围内结构无共振频率共振频带范围内无对应激励频率共振输入频率=固有频率工况1工况2工况309.25.2018Page 10Simcenter 模态试验解决方案Simcenter Advances on Modal Testing修改刚度西门子试验分析软件Siemens Software修改结构参数避免共振不修改激励源修改阻尼修改质量发动机卡门涡街路谱激励主要方法常用方法军工慎用满足性能需求飞行高度速度限制需要满足标准09.25.2018Page
8、11Simcenter 模态试验解决方案Simcenter Advances on Modal Testing修改刚度西门子试验分析软件Siemens Software修改结构参数避免共振不修改激励源修改阻尼修改质量发动机卡门涡街路谱激励主要方法常用方法军工慎用满足性能需求飞行高度速度限制需要满足标准09.25.2018Page 12Simcenter 模态试验解决方案Simcenter Advances on Modal Testing测试方法Measurement模态原理Theory模态试验（测试和分析）Structure Testing&Analysis基本假设Hypothesis分析方
9、法Analysis西门子试验分析软件Siemens Software09.25.2018Page 13Simcenter 模态试验解决方案Simcenter Advances on Modal Testing验证结构非线性特性Verification Nonlinear修改仿真模型Model Updating模态试验（测试和分析）Structure Testing&Analysis西门子试验分析软件Siemens Software09.25.2018Page 14Simcenter 模态试验解决方案Simcenter Advances on Modal Testing相关性及模型修正Corre
10、lation&Model Updating仿真需要结构参数FEM测试得到结构频响FRF部件频响FRF ofComponent修正部件模型ComponentFEM Model子系统频响FRF ofSub-assembly修正部件连接Connection ofComponents整机频响FRF of Whole System修正边界条件BoundaryCondition修正部件参数Component修正子系统参数Sub-assembly修正整机模型Whole System仿真模型修正顺序CAE Model Updating Workflow第一轮修正第二轮修正第三轮修正09.25.2018Page
11、 15Simcenter 模态试验解决方案Simcenter Advances on Modal Testing验证结构非线性特性Verification Nonlinear修改仿真模型Model Updating模态试验（测试和分析）Structure Testing&Analysis西门子试验分析软件Siemens Software09.25.2018Page 16Simcenter 模态试验解决方案Simcenter Advances on Modal Testing西门子试验分析软件Siemens Software定常假设Stationary线性假设Linear可测性Testabili
12、ty互易性Reciprocity1.定常假设就是时不变假设2.结构相同，不同人的测试结果不同3.测试条件变化1.模态测试必须满足线性假设2.非线性结构不满足线性假设3.非线性不关注模态结果1.被测结构须满足可测性原理2.张紧的弦，膜3.非接触测试，激光，电涡流1.被测结构须满足互易性原理2.移动力锤法3.传递路径分析OPAX09.25.2018Page 17Simcenter 模态试验解决方案Simcenter Advances on Modal Testing测试方法Measurement模态原理Theory模态试验（测试和分析）Structure Testing&Analysis基本假设H
13、ypothesis分析方法Analysis西门子试验分析软件Siemens Software09.25.2018Page 18Simcenter 模态试验解决方案Simcenter Advances on Modal Testing西门子试验分析软件Siemens Software力锤激励Impact Testing激振器激励MIMO Testing移动力锤法移动传感器耗能小的结构附加质量小不做非线性多入多出纯模态扫频正弦随机激励步进正弦09.25.2018Page 19Simcenter 模态试验解决方案Simcenter Advances on Modal TestingAP(F)N Hz
14、AP(F)N HzAP(F)N HzfAP(F)N HzresonanceAP(F)NHz猝发随机Burst Random扫频正弦Swept Sine步进正弦Stepped Sine纯模态Normal Modes锤击法ImpactPhase Separation or Frequency Response Function(FRF)based methodsPhase Resonance/Mode Appropriation 西门子试验分析软件Siemens SoftwareMeasure FRFModal Parameter EstimatorExperimental Modal Model
15、 ,Measure Mode ,09.25.2018Page 20Simcenter 模态试验解决方案Simcenter Advances on Modal Testing800.004.00Hz17.268.09e-3LoguE/N48.56518.50FMeasuredFPolymax FPolymax Plus09.25.2018Page 21Simcenter 模态试验解决方案Simcenter Advances on Modal Testing西门子试验分析软件Siemens Software模态试验（测试和分析）Structure Testing&Analysis测试方法有误选择正
16、确测试方法09.25.2018Page 22Simcenter 模态试验解决方案Simcenter Advances on Modal Testing测试方法Measurement模态原理Theory模态试验（测试和分析）Structure Testing&Analysis基本假设Hypothesis分析方法Analysis西门子试验分析软件Siemens Software09.25.2018Page 23Simcenter 模态试验解决方案Simcenter Advances on Modal Testing115.003.00Hz0.011.00e-6Logg/NFMeasuredFSyn
17、thesized115.003.00Hz0.010.10e-6Logg/NFMeasuredFSynthesized模态分析最害怕的事拟合频响函数测试频响函数存在误差09.25.2018Page 24Simcenter 模态试验解决方案Simcenter Advances on Modal Testing800.004.00Hz17.268.09e-3LoguE/N48.56518.50FMeasuredFPolymax FPolymax Plus大噪声导致拟合FRF和测试FRF存在误差09.25.2018Page 25Simcenter 模态试验解决方案Simcenter Advances
18、on Modal Testing09.25.2018Page 26Simcenter 模态试验解决方案Simcenter Advances on Modal TestingMLMM800.004.00Hz17.268.09e-3LoguE/N48.56518.50FMeasuredFPolymax FPolymax Plus09.25.2018Page 27Simcenter 模态试验解决方案Simcenter Advances on Modal TestingMLMM800.004.00Hz17.268.09e-3LoguE/N48.56518.50FMeasuredFPolymax FPolymax Plus09.25.2018Page 28Simcenter 模态试验解决方案Simcenter Advances on Modal Testing西门子试验分析软件Siemens Software分析算法Modal Analysis非常清晰的稳态图快速便捷的极点选择减少人为因素的影响 更多、更高质量的模态“全能”方法宽带分析高、低阻尼噪声污染数据专利算法PolyMAXPolyMAX PlusMaximum Likelihood estimation of a Modal Model(MLMM)
