New Capabilities for More Effective Data Analysis
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1 New Capabilities for More Effective Data Analysis Kurt Munson HBM Prenscia
2 ncode Product Range 2 CAE DURABILITY Fatigue analysis technology for FEA Process encapsulation Fast, configurable, and scalable DATA PROCESSING FOR DURABILITY Complex analysis to report, simply done Graphical, interactive & powerful analysis World leading fatigue analysis capabilities ACOUSTIC & VIBRATION ANALYSIS Powerful and simple to use Noise and Vibration analyses including rotating machinery, structural dynamics and human perception MAXIMIZING ROI ON TEST & DURABILITY Enables collaboration, data management, and standardized analyses Search, query and reporting through secure web access. Data to decisions
3 New! ncode VibeSys 3 New! Product focused on the needs of acoustics and vibration engineers Application on the ncode main menu Worked example and theory guide Standard processes Vibration Manager for vibration test specifications Short introduction video at Customers with GlyphWorks Frequency module automatically get upgraded to VibeSys Base
4 New Worked Examples for ncode VibeSys 4 4 new ncode VibeSys worked examples Ride Quality Analysis: Calculating Vibration Dose Values Frequency Response Analysis Modal Parameters estimation for simple structures with lightly coupled modes Acoustics: Exposure to Noise
5 New! Prenscia Access 5 Access to reliability software introduced with Prenscia Access Prenscia Access is a unified licensing model that provides annual leased access to both ncode and ReliaSoft product ranges. Customers previously using ncode CDS are automatically upgraded to Prenscia Access, which enables the use of ReliaSoft products such as Weibull++ and Xfmea. ReliaSoft provides a comprehensive range of reliability engineering software tools. For more info on these products see reliasoft.com Number of Units Weibull ALTA PRO Edition 750 BlockSim 700 Xfmea 300 RCM RGA 400 DOE MPC Plus Edition 950 RENO 200 Lambda Predict (All Modules) 600 RBI 1,500
6 Licensing Manager in ncode 12 6 New licensing manager adopted Starting with version 12, ncode software licenses will be managed using LM X License Manager New license administration tool Increased security Improved CDS usage reporting
7 Data Cleaning 7 Getting good reliable time series data is still a challenge. Wavelet Denoising Uses wavelet decomposition to remove noise Remove the Gaussian noise from a signal Transient noise analysis, e.g. door slam Kalman Filter An example of machine learning Removes noise by using a physics model that predicts, given the current point, where the next point will be. Example: GPS data cleaning built into the GPS Processing glyph New worked example #26 Data Cleaning with the Kalman Filter Glyph
8 Cepstrum analysis in the frequency spectrum glyph 8 FFT analysis Is it periodic? by looking for patterns in the time domain. Cepstrum analysis Is it harmonic? by looking for patterns in the frequency domain. Used as machine diagnostics to detect faults in rotating machinery...as well as other applications such as echo detection and removal.
9 Stationarity Test glyph 9 This glyph performs a Stationarity Test on time series data. Currently has the Kolmogorov Smirnov (KS) option. This test is a non parametric test of the equality of two probability distributions (PDFs). By comparing the PDFs of two data segments, it is used to determine statistically whether they both come from the same population.
10 Stationarity Test glyph 10 The time signal is divided into a number of shorter segments and the PDF of each segment is compared with the PDF of the entire signal. Segments which deviate significantly from the overall signal are clearly identifiable in the output. Stationarity is required for vibration fatigue analysis and other vibration analysis processes.
11 Hilbert transform glyph 11 The Hilbert Transform is used to create either the envelope of a time signal, or the frequency between adjacent points as a train of pulses. Use of Hilbert s envelope: Determine the damping or decay rate at resonances, from the impulse response function Estimate propagation time, from the cross correlation function Diagnose bearing faults Use of Hilbert s frequency: Calculate frequency vs. time signal
12 Display improvements 12 XY Display glyph Metadata limits for the x axis can now be defined on a per channel basis to auto zoom to different section of overlaid lines. The number of x axes on an overlay plot can now be user defined. The user can select which channels use which axis and the selection is indicated on the legend. Waterfall Display glyph Annotations like text and arrows can now be added to waterfall plots. ncode Viewer When showing an XY Display, the viewer can now optionally display the full legend as a table below the plot area. It is now possible to save and load configuration files to control the setup of the various displays (requires a GlyphWorks license to be available).
13 Other Enhancements 13 Integration and differentiation glyphs Time domain based integration/differentiation (or double) can now be carried out in the frequency domain based on Histogram data. For example, convert an acceleration spectrum to velocity or displacement. Materials Input glyph This glyph now supports any defined material type for the option OutputType=MetaDataOnly, which includes custom materials. MATLAB Scripting glyph This glyph now supports complex frequency input and output data Also supports version 2015a of MATLAB. UnitsConversion glyph When using Histogram data, a new option has been added that allows conversion between different spectrum types For example, convert a frequency spectrum from g 2 /Hz to (m/sec 2 ) 2 /Hz
14 Other Enhancements 14 Performance improvements Save for batch for user form data Improved XYDisplay zooming Other Per channel X and Y Cursors with Metadata support Improved file format plugin Pick function button added to MC and Metadata calculator glyphs Improvements to Automation s TestManager and TestBuilder
15 File Formats 15 Support added for. RPC floating point (write) intest CSV ACRA PCAP MDF4.1 Binary UFF Dewesoft DXD ACRA PCAP ADAMS/CAR REQ Includes using the.nam file for channel naming
16 Modal Analysis Product Option Product Overview: Modal Analysis is a specialized product option within ncode VibeSys that provides the ability for engineers to answer questions such as: What are the modal frequencies? What is the mode shape at a specific frequency? What are the modal damping ratios? How good is my modal FE simulation compared to modal tests? Key Features: Experimental Modal Analysis identifies modes of vibration and extract modal parameters Provides a regenerated FRF to compare with the measured one and assess the quality of the modal parameters extraction. Corrects for residual modes outside the frequency band of interest for a more accurate curve fit. Operating Deflection Shapes to visualise the vibration patterns of a structure Flexible inputs such as FRF to animate mode shapes or time domain signals to display operating displacements. 16
17 Modal Analysis Product Option 17 Key Benefits: Enhance FE modelling by providing reliable damping ratios Validate FE results by comparing modal frequencies and mode shapes with the experimental tests. Rapidly compare different designs in terms of their dynamic properties Troubleshoot noise and vibration problems Perform Structural Health Monitoring by tracking changes in modal parameters due to damage.
18 Modal Analysis: concepts 18 Also known as curve fitting or modal parameter estimation. The measured FRF is basically broken down into the principal components that make up the measured data into many Single Degree of Freedom (SDOF) systems Results are: modal frequencies f i, damping ratios ξ i, and mode shapes f 1, ξ 1 f 3, ξ 3 f 4, ξ 4 f 2, ξ 2
19 Experimental Modal Analysis glyph 19 The EMA glyph expects Frequency Response Functions in : Gain Phase Analysis properties include: Frequency range List of natural frequencies Whether to account for residual modes Results are: The regenerated FRFs in Gain and Phase A modal table containing the damping ratios FRF regenerated w/o residuals FRF regenerated with residuals
20 Operating Deflection Shapes glyph Visualize vibration patterns in a structure. The ODS glyph expects : A geometry UNV, BDF/DAT, INP, FE results files Nodal Displacements Time series FRF Spectra Modal Table (from EMA) 20 The mapping between nodes and measurements can be done via: The ODS Mapping Editor A text file Metadata #DOFIdentification.Node# and #DOFIdentification.Direction#
21 What s Coming in ncode 13
22 ncode Version Modal Analysis Enhancements Improvements to the Operational Deflection Shapes display New experimental modal analysis methods Acoustics Sound Quality Glyph Loudness, Sharpness, Articulation index Orbit plot Excel input glyph in Linux Move to Python Display improvements Campbell plot Waterfall display XYDisplay 22
23 Operating Deflection Shapes glyph 23 Animate a complex model, not just a wireframe Select modes to display from a drop down list Background un deformed shape
24 Extension to the Experimental Modal Analysis glyph 24 Automated selection of modal frequencies New curve fitting method to deal with close coupled modes Channel selection property
25 More Acoustic Analysis 25 Psycho Acoustic Metrics Sound quality: metrics such as Loudness, Sharpness explain how sounds are perceived by the human ear Speech Metrics: Articulation Index Benefit for end user: increase chances of consumer adoption Orbit plot Rotating Machinery Measure x and y displacement of a rotating shaft, and plot total displacement vs. angle of rotation Check the shaft deflection stays within limits and diagnose faults Some failure modes in turbomachines have recognizable plot shapes Benefit: Avoid failures during service and minimise maintenance downtime
26 Display improvements 26 XYDisplay Creation of channel based cursors when in overlay mode Horizontal scrollbar in the channel list of the Channel Selection property page Campbell plot Now allows up to 32 mode lines Waterfall display Z limits truncates the plot in order to more clearly show peaks
27 GPS Display mapping improvements 27 Mapping now provided by the new MapQuest Static map Requires free registration at Patch available for ncode 12.1 available in mid late October 2016
28
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