PRODUCT DATA. PULSE Reflex Modal Analysis Basic Modal Analysis Types 8720, 8720-A and 8720-B Advanced Modal Analysis Types 8721, 8721-A and 8721-B

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1 PRODUCT DATA PULSE Reflex Modal Analysis Basic Modal Analysis Types 8720, 8720-A and 8720-B Advanced Modal Analysis Types 8721, 8721-A and 8721-B PULSE Reflex Modal Analysis is an easy-to-use postprocessing application that enables you to perform single and polyreference Classical Modal Analysis even in the most demanding situations by using a targeted set of best-in-class mode indicator functions, curvefitters and validation tools. Accurate results are quickly obtained by following an intuitive, yet flexible workflow process that guides you efficiently through measurement validation, parameter estimation setup, mode selection, analysis validation and reporting. PULSE Reflex Modal Analysis with PULSE Modal Test Consultant constitutes an integrated modal acquisition and analysis system. Uses and Features Uses Single and poly-reference Classical Modal Analysis from measured Frequency Response Functions Estimation of modal parameters to be used for FEM correlation and updating, design verification, benchmarking, quality control and troubleshooting Integrated solution using PULSE Modal Test Consultant Type 7753 and PULSE Reflex Modal Analysis Type 8720/8721 Open stand-alone application to be used with your existing data acquisition system Features Efficient workflow with just a few steps to perform a complete modal analysis Tools for quick searching, sorting and filtering of large amounts of data Easy-to-use geometry drawing tools Import of geometry in standard formats Selection of FRFs to display from excitation and response DOFs on geometry FRF-based animation for validation of test setup Normal Mode Indicator Function (NMIF), Power Mode Indicator Function (PMIF), Complex Mode Indicator Function (CMIF), Multi-variate Mode Indicator Function (MMIF) SDOF curve-fitters: Least Squares Global Partial Fraction, Quadrature Picking MDOF curve-fitters: Poly-reference Frequency, Polyreference Time, Rational Fraction Polynomial-Z, Eigen System Realization, Alias Free Polyreference Clear stability diagrams for improved overview and straightforward mode selection Cluster Diagrams and Pole Density Diagrams for optimal curve-fitting and mode selection Automated mode selection using your preferred curve-fitter FRF synthesis including error function and Frequency Response Assurance Criteria (FRAC) Complexity plots, AutoMAC and CrossMAC tables for validation of mode shape complexity and correlation CoMAC geometry plots for comparing paired modal models Integrated Microsoft Office reporting capabilities

2 Introduction Data Acquisition and Import Geometry Creation and Import Fig. 1 Geometry Creation. Geometries can be imported in standard formats using the Project Browser or created using basic drawing objects or in tabular form PULSE Reflex is the latest addition to the PULSE platform of software products. It provides post-processing in a modern, intuitive GUI environment and is the culmination of extensive customer surveys to resolve their most important issues when analysing sound and vibration data. PULSE Reflex provides Enhanced usability for high productivity with an intuitive user interface that puts the tools you need at your fingertips. The graphical user interface is built around a workflow model that leads you easily through any analysis process Open data policy that supports a wide range of native and third party formats for improved import and export of data Consistent user interface throughout all applications encouraging faster learning of new applications PULSE Reflex Modal Analysis is a post-processing suite for Classical Modal Analysis, i.e. modal analysis based on hammer and shaker testing. It allows you to observe, analyse and document the dynamic behaviour of structures and provides accurate and reliable results even in the most demanding situations with a targeted set of best-in-class mode indicator functions, curve-fitters and analysis validation tools. PULSE Reflex Modal Analysis seamlessly integrates with PULSE Modal Test Consultant creating a highly consolidated solution for modal data acquisition and analysis. PULSE Modal Test Consultant supports hammer and shaker testing and exports the geometry and measurement data to PULSE Reflex Modal Analysis for subsequent post-processing. The open data policy behind PULSE Reflex Modal Analysis also allows it to be used as a stand-alone application together with your existing data acquisition system. Geometry can be imported in standard data formats like UFF, DXF and CSV. The measurement DOFs contained in the imported measurement files are automatically added to and shown on the geometry in the subsequent tasks. Alternatively, geometries can be created from scratch using the embedded drawing tools. You can work with points, lines, surfaces and basic shapes such as boxes, cylinders and hemispheres. The geometry can also be created from table entries using the Geometry Explorer. 2

3 Analysis and Reporting Fig. 2 Geometry Driven Function Display. Functions are selected by clicking on the desired excitation and response DOFs on the geometry. Shown in this example, all FRFs related to the shaker at the front By logical grouping features and display of results, PULSE Reflex Modal Analysis allows you to do a complete modal analysis in just four main steps: Measurement Validation Parameter Estimation Setup Mode Selection Analysis Validation In addition, extensive live reporting can be done in Microsoft Word, Excel and PowerPoint using integrated reporting functions. Measurement Validation The Measurement Validation task is used to check the quality of the measurement data prior to performing the modal parameter extraction. Functions like Ordinary and Multiple Coherence, reciprocity and driving point FRFs, or all FRFs from selected references can easily be shown by simply dragging the functions from the Project Browser. The Geometry Driven Function Display provides a graphical tool that allows you to select on the geometry the DOFs that are to be used for the displayed function types. Data can also be sorted and filtered in a table to easily select individual functions to be displayed. For validation of test setups, such as identifying cable breaks and faulty and incorrectly mounted transducers, animations can be done based on FRFs. For structures with lightly damped and well-separated modes, the FRF shapes will resemble mode shapes. Parameter Estimation Setup The Parameter Estimation Setup task is where you prepare and execute the curve-fitting. FRF data to include in the analysis are easily filtered, sorted and then selected using the Data Matrix Selector table. In the same screen layout, the geometry with DOF information is shown together with a graph area for investigating potential modes using different Mode Indicator Functions. Various SDOF and MDOF curve-fitters can be selected and the frequency range of interest can be set, including the time range, when using time domain curve-fitters. Previews of the stability diagram for the different curve-fitters aid in the selection of the preferred curve-fitter for the task at hand. To assist in this, powerful tools like cluster diagrams and pole density plots are also available. 3

4 The clear stability diagrams make it easy to discriminate true physical modes from non-physical modes. Fig. 3 The Parameter Estimation Setup for preparation and preview of curve-fitting. Shown in this example are the CMIFs The powerful set of mode indicator functions and curve-fitters ensure that you have the best possible tool in any given situation whether weakly excited modes, heavily damped modes, repeated roots and inconsistent FRF data are present. Mode Selection In the Mode Selection task, the modal results are shown in terms of natural frequency, damping ratio, mode shape animation and synthesis of FRFs. Once a mode is selected using one of the stability diagrams (with MDOF curve-fitters) or FRFs (with SDOF curve-fitters), it will immediately show up in the Mode Table, the mode will be animated and the synthesized FRFs will be compared to the measured ones. Automated mode selection is supported for fast preliminary investigations of unknown structures or when conducting repetitive testing. It also eliminates the potential risk of userdependent results. Automated Mode Selection works for all MDOF curve-fitters by indicating the modes in the stability diagrams, populating the Mode Table, animating the first mode and showing the synthesis functions. The Mode Selection task provides full flexibility for selection and comparison of modes from different curve-fitting methods for creation of best possible modal model. 4

5 Fig. 4 Mode Selection. Modes selected are shown in the mode table, animated, and the FRFs synthesized. In this example, automated mode selection was applied Analysis Validation The Analysis Validation task supplies you with a number of tools for further investigation of the obtained modal results for maximum confidence in your obtained modal model. This includes FRF Synthesis, Mode Shapes Animation, Auto- and CrossMAC tables, CoMAC geometry plots and Complexity plots. Fig. 5 Side-by-Side Animation of first torsional and bending modes Reporting The Report task enables reports to be prepared in parallel with the analysis process, linking important results as they are produced. Store geometries, displays, tables and text in the Project Browser as report elements so when you are ready, you only need to generate and save the report. High quality active or static reports are easily created directly in Microsoft Word, Excel or PowerPoint. Reports can be based on standard embedded templates, customised templates you define, or ad hoc. 5

6 Product Structure Fig. 6 PULSE Reflex Modal Analysis product structure Modal Acquisition and Analysis Modules PULSE Reflex Post-processing Advanced Modal Analysis 8721 Basic Modal Analysis 8720 Geometry 8719 Base 8700 Animation BZ 5613 MIMO Analysis 7764 Optional For more information on Modal Test Consultant Type 7753, MIMO Analysis Type 7764 and Animation Option BZ- 5613, see Product Data BP For an overview of the PULSE software platform, see PULSE Software System Data BU PULSE Real-time Modal Test Consultant 7753 PULSE Labshop 7700/ Base Module The Base software provides the framework, including Project Browser, Reporting, Notes Pages and Help system. The Base module must be installed to run Modal Analysis. Geometry Application Module The Geometry application allows the importation and creation of geometries and is used across the various PULSE Reflex structural dynamics solutions. It must be installed to take advantage of features like Geometry Driven Function Display, FRF Animation and Mode Shape Animation. A variety of animation types are supported including wire frame, surface contour, point and arrow animation as well as overlaid, difference and side-by-side animation in single or quad view format. The animations can be recorded as AVIs and included in Word and PowerPoint reports. Basic Modal Analysis Application Module An application designed for single-reference modal analysis with a basic, yet comprehensive, set of mode indicator functions (MIFs), curve-fitters and analysis validation tools. For use with single shaker FRF data and single reference hammer testing data. Basic Modal Analysis includes: Mode indicator functions: Normal MIF (NMIF) and Power MIF (PMIF) Curve-fitting: SDOF: Least Squares Global Partial Fraction, Quadrature Picking MDOF: Polyreference Time, Polyreference Frequency limited to one reference Stability diagram Automated mode selection Analysis validation: AutoMAC and CrossMAC Advanced Modal Analysis Application Module Advanced Modal Analysis adds poly-reference modal analysis capabilities and advanced mode indicator functions, curve-fitters and analysis validation tools to the Basic Modal Analysis application. For use with shaker MIMO (Multiple Input Multiple Output) FRF data, polyreference hammer testing data or for advanced analysis and validation of both single and polyreference data. 6

7 Advanced Modal Analysis adds: Mode indicator functions: Complex MIF (CMIF) and Multi-variate MIF (MMIF) MDOF Curve-fitters: Polyreference Time and Polyreference Frequency (no reference limitations), Rational Fraction Polynomial-Z, Eigen System Realisation and Alias-Free Polyreference (AFPoly ) Advanced stabilisation diagrams: Cluster diagram and Pole Density plot Analysis validation: Complexity plot and CoMAC geometry plot Packs A number of modal analysis and modal acquisition and analysis packs are available as shown in Table 1. Table1 Overview of PULSE Reflex Modal Analysis packs Pack Type No. Description Comprises Type 8700 Type 8719 Type 8720 Type 8721 Type 7753 Type 7764 BZ-5613 Base Geometry Basic Modal Analysis Advanced Modal Analysis Modal Test Consultant MIMO Analysis Animation Option 8720-A Basic Modal Analysis Pack 8720-B Basic Modal Acquisition and Analysis Pack 8721-A Advanced Modal Analysis Pack 8721-B Advanced Modal Acquisition and Analysis Pack Complete Measurement Chain With Brüel & Kjær s complete and fully integrated measurement chain, including accelerometers, impact hammers, force transducers, modal shakers, data acquisition front-ends and measurement and post-processing software, you can select the optimal solution for your modal analysis needs. The openness and flexibility of PULSE Reflex Modal Analysis supports your needs today and in the future. You are never limited to a vendor specific system configuration and can easily assemble the system of your choice. 7

8 Specifications PULSE Reflex Modal Analysis SYSTEM REQUIREMENTS PULSE v.14 or later Windows XP, Windows Vista or Windows 7 operating system PC requirements for PULSE Reflex Base Type 8700 must be fulfilled (see Software for PULSE Reflex Product Data, BP 2258) SOFTWARE REQUIREMENTS PULSE Reflex Base Type 8700 must be installed PULSE Reflex Geometry Type 8719 must be installed for all functionality requiring geometry PULSE Reflex Basic Modal Analysis Type 8720 is required to run PULSE Reflex Advanced Modal Analysis Type 8721 DATA INPUT Requires FRF data as input for the curve-fitting process Measurement data and geometry seamlessly transferred from PULSE Modal Test Consultant Standard measurement data formats: UFF type 58 (Binary & ASCII) GEOMETRY IMPORT AND CREATION Contains a range of tools for creating test object geometry. You can import geometry in UFF or DXF file formats or create it from scratch using basic drawing objects and lines combined into the desired structure Geometry Import Formats: DXF from AutoCAD v. 10, UFF data set types 15, 82 or 2411, ME scopeves native geometry format (*.str), and Microsoft Excel (*.csv) Geometry Export Formats: UFF data set types 15, 18 or 82, ME scopeves native geometry format (*.str), and Microsoft Excel (*.csv) Views: Three 2D views: Plan View, Side View and Front View (PV, SV, FV), Isometric view Split screen views combining 2D and 3D views Hidden lines and transparency Pan, zoom and rotate options for viewing geometry All views scalable Full dynamic rotation of test object geometry including auto-rotation Drawing: Creation of points, lines, faces and basic 3D shapes. Drawing using mouse, or by inputting coordinates. Automatic mesh generation for basic shapes. Easy object rotation and adjustment in 3D space including: Cartesian, spherical and cylindrical coordinates Local coordinate systems Geometry components Geometry Explorer: Tabular displays of elements and points used to make up the geometry Tabular displays of lines and faces Table Functionality: Editable point coordinates, labels, lines, colours and faces labels Filtered display of objects using alphanumeric filters Automated point numbering Partial or complete semi-automated point renumbering Point display on geometry options including text labels, prefixes for point numbers and hide/unhide features Element Display: Hierarchical tree view for substructures of geometry ANIMATION Single, Overlaid, Difference and Side-by-Side animation Wireframe, Contour, Points and Arrow animation Animation of non-measured DOFs using interpolation equations AVI file generation MEASUREMENT VALIDATION Geometry Driven Function Displays: Show FRFs based on selected excitation and response DOFs on the geometry FRF-based Animation: Animate geometry using FRFs data Function Displays: Display function data dragged from Project Browser PARAMETER ESTIMATION SETUP Function Selector: Selection of FRF data to be included in curvefitting Mode Indicator Functions: Basic Modal Analysis: Normal Mode Indicator Function (NMIF), Power Mode Indicator Function (PMIF) Advanced Modal Analysis: Complex Mode Indicator Function (CMIF), Multi-variate Mode Indicator Function (MMIF) Curve-fitters: Basic Modal Analysis: SDOF: Least Squares Global Partial Fraction, Quadrature Picking MDOF: Polyreference Frequency and Polyreference Time (with single reference) Advanced Modal Analysis: MDOF: Polyreference Frequency and Polyreference Time (with multiple references), Rational Fraction Polynomial-Z, EigenSystem Realization, Alias-Free Polyreference (AFPoly ) Mode Selection: Manual or Automatic Shape Types: Real or Complex MODE SELECTION Stability Diagram: For indication and selection of modes. Plotted in an Iteration versus Frequency Diagram Mode stability indication: Computational, New, Frequency Stable, Damping Stable, Vector Stable, All Stable Selectable mode symbols, colours and tolerance properties Cluster Diagram (Advanced Modal Analysis only): For indication and selection of modes. Plotted in a Damping versus Frequency Diagram Mode stability indication: Computational, New, Frequency Stable, Damping Stable, Vector Stable, All Stable Selectable mode symbols, colours and tolerance properties Pole Density Diagram (Advanced Modal Analysis only): For indication and selection of modes. Plotted in a colour-coded Damping versus Frequency Diagram Mode Table: Contains the modal model in terms of natural freq, damping and mode shapes. Comprehensive documentation of modal results including: Mode number, Mode Description, Estimation Method, Mode Complexity, Stability Level, Model Scaling etc. Columns with Sorting and Filtering Synthesis: Comparison of measured and synthesized FRFs; Error Function; Frequency Response Assurance Criteria (FRAC) ANALYSIS VALIDATION Synthesis: FRFs or Mode Indicator Functions Displacement, velocity or acceleration Mass, stiffness, both or none Animation Auto- and CrossMAC Complexity Plot (Advanced Modal Analysis only) CoMAC (Advanced Modal Analysis only) REPORTING Integrated live reporting using Microsoft Word, Excel and PowerPoint 8

9 Ordering Information MODULES Type 8700-X a Type 8719-X a Type 8720-X a Type 8721-X a PACKS Type 8720-A-X a Type 8720-B-X a PULSE Reflex Base PULSE Reflex Geometry PULSE Reflex Basic Modal Analysis PULSE Reflex Advanced Modal Analysis PULSE Reflex Basic Modal Analysis Pack PULSE Reflex Basic Modal Acquisition and Analysis Pack Type 8721-A-X a PULSE Reflex Advanced Modal Analysis Pack Type 8721-B-X a PULSE Reflex Advanced Modal Acquisition and Analysis Pack See "Product Structure". a. Where "X" indicates the license model, either N: Node-locked or F: Floating MAINTENANCE AND SUPPORT AGREEMENTS M X a PULSE Reflex Base Software Maintenance & Support Agreement M X a PULSE Reflex Geometry Maintenance & Support Agreement M X a PULSE Reflex Basic Modal Analysis Maintenance & Support Agreement M X a PULSE Reflex Advanced Modal Analysis Maintenance & Support Agreement M A-X a PULSE Reflex Basic Modal Analysis Pack Maintenance & Support Agreement M B-X a PULSE Reflex Basic Modal Acquisition and Analysis Pack Maintenance & Support Agreement M A-X a PULSE Reflex Advanced Modal Analysis Pack Maintenance & Support Agreement M B-X a PULSE Reflex Advanced Modal Acquisition and Analysis Pack Maintenance & Support Agreement 9

10 TRADEMARK Microsoft, Windows, Windows Vista, Exel and PowerPoint are registered trademarks of Microsoft Corporation in the United States and/or other countries AFPoly (Alias-Free Polyreference) is a trademark of ATA Engineering ME ScopeVES is a trademark of Vibrant Technology, Inc. AutoCAD is a trademark of Autodesk, Inc. Brüel & Kjær reserves the right to change specifications and accessories without notice ËBP JÎ BP HEADQUARTERS: Brüel & Kjær Sound & Vibration Measurement A/S DK-2850 Nærum Denmark Telephone: Fax: info@bksv.com Local representatives and service organisations worldwide