In order to acquire the dynamic behavior of different kinds of machinery and equipment, optomet laser doppler vibrometers are the perfect measurement tools because they are flexible enough to measure all types of vibrations quickly and without contact even over long distances, rotating parts or. Edm modal operational deflection shape ods is a feature. Using this software enables the visualisation in animation of vibrations of a certain machine. This version contains new features as well as great improvements in performance. Default channel setup behavior allows directions to. Making a 3d ods analysis operating deflection shapes. Ods analysis is a method used for visualisation of the vibration pattern of a machine or structure as influenced by its own operating forces. In order to acquire the dynamic behavior of different kinds of machinery and equipment, optomet laser doppler vibrometers are the perfect measurement tools because they are flexible enough to measure all types of vibrations quickly and without contact even over long distances, rotating parts or glowing surfaces. Pdf introduction to operating deflection shapes by. Whats the difference between operating deflection shapes. Ods operational deflection shape software an ods shows how your machine or structure is moving, and whether or not there are excessive vibration levels. Our software we make software for visualizing vibration. By animating spatially acquired data in slow motion, a structures overall motion, and the motion of one part relative to another, can be viewed.
The use of operating deflection shapes ods to model the. If an engineer were to animate a wireframe model using a set of acceleration transmissibility spectra, he would be viewing operating deflection shapes ods. Whats the difference between operating deflection shapes and. Is it a mode shape, or an operating deflection shape. Edm modal geometryodsanimation is the primary edm modal software module, and is required for every edm modal system. Jul 14, 2015 operational deflection shapes ods can be useful to view the vibration patterns of a structure. Operational deflection shape ods analysis taqiuddin haider vibration analyst level iii 2. Operating deflection shapes waveimage modal analysis.
The best operating deflection shape ods software amp. Cool channel setup tricks for triaxial accelerometers. Operating deflection shapes analysis determination of. Vibration analysis services diagnostic measurement. Operating deflection shapes detect unbalance in rotating. Ods software visualizes the vibration pattern of a machine or structure under reallife operating conditions through modal development. Most often this is done by performing ods operating deflection shape analysis or modal analysis. It is designed for animation of both operating deflection shape ods as well as impact response measurements.
During the animation the vibration movement is slowed down to very low frequency and the amplitude of the motion is increased so we can see the. Difference between ods and modal analysis ods is performed when machine is in running mode and modal analysis is performed when machine is in stop condition. Dec 12, 2018 ods is a process of diagnosing rotating machinery, it may become unavoidable to do some structural vibration analysis as well. During the animation the vibration movement is slowed down to very low frequency and the amplitude of. Operational deflection shape and modal analysis testing to solve resonance problems in a vertical pump. Operational deflection shapes ods from a gas turbine. Artemis modal includes time as well as frequency domain operating deflection shapes ods. This is different to other structural vibration tests such as impact hammer tests, bump tests or shaker tests. This means that we visualize the vibrations of the machine by animation.
In fact, odss are always measured in order to obtain mode shapes. Click to see ods overview video click to see animated samples. Using digivibemx m30 for making a 3d ods operating deflection shapes analysis with one of t. Operational deflection shapes ods can be useful to view the vibration patterns of a structure. In the process of diagnosing rotating machinery, it may become unavoidable to do some structural vibration analysis as well. An operational deflection shape ods is the easiest way to actually see how a machine or structure moves during its operation. Intuitive software supporting time, spectral and runupdown operating deflection shapes ods analysis. This is different from the study of the vibration patterns of a machine under known external forces, which is. Our experience includes motors, pumps, gearboxes, turbines, fans, piping, conveyor heads and what may be the largest ods test performed in the power industry a turbine generator and two floors of the turbine building. The vibration patterns are shown as animated geometric models and display a combination of the forcing function acting on the structure and the dynamic properties of the structure. From vibration signals acquired with accelerometers, it determines the vibration pattern of a structure under given operating conditions.
This can be done with the aid of ads, a software programme based on the concept of operational deflection shapes ods. An operational deflection shape is an animation of the vibration pattern in a structure. A future inspection will be completed underground with loaded conditions. A sound intensity test helps find frequencies at which the sound levels peak and helps validate the operational deflecting shapes. The purpose is to take my knowledge to the next level serious and advanced level as well.
Since an operating deflection shape is defined simply as the response of a structure at a specific time or frequency, no. What is the difference between operating deflection shapes. Modal analysis and modal testing ods, mimo, oma dewesoft. Is it a mode shape or an operating deflection shape. Dynamic measurement on a bladed turbine disk for mode shapes identification. Different animation types and views are supported including sidebyside, overlaid and difference animation. Yet, they are quite different from one another in a number of ways. Clear motion ods is a software package designed for building structural models, and applying measured values to the models to generate animations of the structural motion. University uses siemens digital industries software solutions. Ods operational deflection shape analysis, when and why. Release of a major new version of the software platform. Operational deflection shape analysis and vibration solving.
Whats the difference between operating deflection shapes and mode shapes. Modal analysis for test engineers including operation. Wide range of operational shape deflection testing services. I would much rather call the data we receive from an operating condition, an. Operational deflection shapes ods from a gas turbine generator. These features allow you to study the overall vibration pattern eit. Operating deflection shapes now an affordable modal software providing a comprehensive package for modal test, for modal experts as well as novice engineers. Directions are not checked for compliance to the right hand rule.
By default, directions on channels can be set independently. Operating deflection shapes ods, mode indicator functions mif, cola analysis are fully implemented in dewesoft while operational modal analysis oma and timedomain ods are available with close integration with an external software package. Operating deflection shape ods analysis is a relatively easy method used for visualisation of the vibration pattern of a machine or structure as influenced by its own operating forces. Shape percent difference a better measure of change in an ods is the shape percent difference spd. Ods operating deflection shape ansys student community. The software enables the user to investigate the operating deflection shapes of. If an engineer were to perform some analysis using the prosig software modal analysis they would be said to be performing oma. Operating deflection shapes test consultant type 7765. All of the geometrical drawing and the measurement process are carried out in a prebuilt real time multichannel frequency analysis project. It is our mission to be the worlds leading provider of operational modal analysis solutions and to follow our vision to develop structural vibration solutions that every engineer can use. Extensive overview of mescope software and hands on use about 50% of class time. This option provides fast and efficient structural model generation and full 3d visualization of test and analysis results.
Modal analysis and operating deflection shape, applications. They visualize eigenmodes and operational deflection shapes in a meaningful way and provide you with data quality that takes simulation model validation to a whole new level. The measurements are taken while the machine is operating. Artemis operating deflection shapes software ods by. What is operational deflection shape ods analysis ods models is a technique for observing the real behavior of system vibration against any forcing function. Operating deflection shape ods, is a term often used in the structural vibration analysis, known as ods analysis. Operational deflection shape analysis and vibration.
This pulse labshop software controls operating deflection shapes ods measurements. Optical 3d metrology enhances the capabilities for the determination of operational deflection shapes and mode shapes by providing accurate fullfield 3d data of shape and displacements. The animated deflection shapes software is based on the method of operating deflection shapes. The operational modal analysis helps visualize actual motor vibrations at certain points on the motor that are being analyzed also called operating deflection shapes. Operating deflection shapes structural vibration solutions.
Fullfield vibrometers are complete solutions that are made up of sensor technology, data acquisition and analysis software. Now an affordable modal software providing a comprehensive package for modal test, for modal experts as well as novice engineers. As its name suggests operational deflection shape analysis shows the vibration pattern experienced during normal operational condition. Operating deflection shape ods analysis is a method used for visualisation of the vibration patterns of a machine or structure caused by unknown operating forces. These features allow you to study the overall vibration pattern either over a time segment or at a specific frequency. Mode shapes and operating deflection shapes odss are related to one another. I request you all to please, please suggest guide help me in finding the best and well accepted software for operating deflection shape. The operational deflection shapes and transient analysis of. Dec 12, 2018 ods operational deflection shape analysis, when and why. Easy method used for the visualization of the vibration pattern of a structure as influenced by its own operating forces.
The animated deflection shapes ads is a method that can help you find the. An operating deflection shape or ods consists of vibration measurements taken at various points on a machine or structure. Operating deflection shapes detect unbalance in rotating equipment. An operating deflection shape shows the deformation of a structure at a specific frequency or during a time waveform playback. This can lead to mistakes when doing a modal analysis or operational deflection shape. The oros modal software is designed for modal analysis, structural dynamics and operating deflection shapes ods vibration. Mode shapes and operating deflection shapes are related to one another. Dear vib legends, i am very curious to know about the best software for operating deflection shape ods which is acceptable worldwide by most of the organizations. Both the amplitude and phase of vibration measurements are animated.
Operational deflection shapes method in trouble shooting. This bk connect software performs analysis for time, spectral and runupdown ods. Operational deflection shape experimental modal analysis. Operating deflection shape ods and modal analysis ods services. Time operating deflection shapes ods of an antique bell waveimage modal software module for calculating vibrational properties under operating conditions. Ods usually refers to taking accelerometer data at many points on a structure and using ods software to map the accelerometer data to a very coarse representation of the geometry to visualize the vibration mode shapes and determine the frequencies of the structure. The ods contains the overall dynamic response of a structure due to forced and resonant vibration. The operating deflection shape ods is the simplest way to see how a machine or structure moves under given operating conditions. Structural vibration solutions as structural vibration solutions as is a supplier and developer of software for operational modal analysis. To measure the operating deflection shape, the system must be run at steady state conditions for an extended period, typically one to several hours depending on the complexity and size of the system. In the following section, this relationship is examined in more detail. Figure 1 is an operational deflection shape of a vibration issue in a truck that occurs at cruising speeds. Feb 20, 2015 using digivibemx m30 for making a 3d ods operating deflection shapes analysis with one of the examples included in the demo version.
We are accomplished in route based vibration programs, remote analysis, dual channel and cross channel vibration measurements, modal analysis, operational deflection shapes ods, phase analysis, shaft vibration measurement, product defect analysis, online monitoring, transient capture, torsional vibration, resonance testing, stress wave. Bk connect operating deflection shapes analysis bruel. The vibration is felt in the steering wheel and seat by the truck occupant. Operating deflection shapes ods analysis determines the vibration patterns of a structure under operating conditions. Clear motion ods is a program for animating measured vibration. What is operational deflection shape ods analysis 4. Time domain responses accelerations are recorded from various parts of the structure during operation, and a reference measurement location is identified. Depending on the type of machinery involved, this often means. As optional features for all versions are the data acquisition plugin, allowing direct control of selected data acquisition hardware, and the experimental. Intuitive software supporting time, spectral and runupdown operating deflection shapes ods analysis request a quote this bk connect software performs analysis for time, spectral and runupdown ods. Ods operational deflection shapes equipment health. Most often this is done by performing ods operating deflection shape. Mescopeves has been specifically designed to make it easier for you to observe and analyze a variety of vibration and acoustics problems in machines and structures. The purpose is to take my knowledge to the next level serious and advanced level as well as to finalize an amc with reliable expert service provider within india.
All versions have estimators for operational modal analysis oma and operating deflection shapes ods. Operational deflection shapes you will learn about planning ods jobs, phase analysis, instrumentation requirement and how to set up your analyzer to collect time and frequency based projects, ods data types, and use of mescope software to model, animate and analyze ods projects. It helps you set up, acquire and then analyse the recorded time data. Webinar identifying operational deflection shapes gom.
Hudgins helps you understand and resolve forced vibration problems with a powerful analytical service called ods operating deflection shape analysis. The software enables the user to investigate the operating deflection shapes of the machine under test. This is different from the study of the vibration patterns of a machine under known external forces, which is usually referred to as modal analysis. In this paper, we will discuss ods measurements, and their relationship to experimental modal parameters. Artemis modal is produced in three versions and the key features are listed below. The measurement of the operational deflection shapes of the brake shoes during drum brake squeal, which was in the torsional mode, was similar to that of the modes obtained from the experimental modal analysis of the brake shoes under the incontact static condition. In experimental modal analysis the exact dynamic behavior of a structure can be determined. Below is an ods taken on a longwall tail drive while being tested at the repair facility, under no load.
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