MTS Bogie Frame Test System · MTS Bogie Frame Test System Locomotive or passenger car tests [one...
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l MTS Bogie Frame Test System Locomotive or passenger car tests [one of the most common standards is UIC 615] requires at least 4-5 actuators of different sizes and a number of adjustable struts with load cell and swivels on both ends. e number of actuators involved during the test depends on complexity of the frame and test requirement. It can be more than 24 actuators. is test is one of the most sophisticated and complex tests used for fatigue testing in rail applications. is test is performed based on requirements from a number of government standards developed during the last 100 years or from development needs for the product. In a modern setup this test requires some modeling (FEA) prior to the test and so called load mapping to locate all “sensitive” points on the frame to be monitored during the test. e Standards contain procedures to be followed to conduct these tests suggesting the load to be applied and order of the tests to be performed. is test is used to study the material properties and fatigue limitations of the bogie frame under different loading conditions. MTS provides a variety of options for test equipment based on application, complexity of the test and the budget. A portal frame solution is offered by MTS to achieve the most cost effective goal with no compromise to the test performance. An MTS standard four column portal frame in combination with a multi degree-of-freedom (DOF) actuator system has the ability to control loads applied to the bogie frame in a wide range of force amplitudes, configurations and frequencies. e test rig consists of a number of servo-controlled actuators each of which is equipped with a set of swivels and a load cell attached to the specimen under evaluation. e actuators provided by MTS have an option to be equipped with hydro-static bearings to extend the service life of the actuator. e control channels can be configured in either load or displacement control mode and can be switched seamlessly without interrupting the test. Setup for this test might require a number of special fixtures to generate the proper mounting conditions on the specimen relative to the force vector and the frame position. e Bogie Frame Evaluation process is a combination of several dynamic tests required by the established industry procedures. e amount of force, frequency and orientation of the specimen during each the test is determined by these industry standards and limitations of the available equipment. is is accomplished by means of servo hydraulic actuators supported by application soſtware on a controller supplied with the system. APPLICATION NOTE
Transcript of MTS Bogie Frame Test System · MTS Bogie Frame Test System Locomotive or passenger car tests [one...
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MTS Bogie Frame Test System
Locomotive or passenger car tests [one of the most common standards is UIC 615] requires at least 4-5 actuators of different sizes and a number of adjustable struts with load cell and swivels on both ends. The number of actuators involved during the test depends on complexity of the frame and test requirement. It can be more than 24 actuators. This test is one of the most sophisticated and complex tests used for fatigue testing in rail applications. This test is performed based on requirements from a number of government standards developed during the last 100 years or from development needs for the product.
In a modern setup this test requires some modeling (FEA) prior to the test and so called load mapping to locate all “sensitive” points on the frame to be monitored during the test. The Standards contain procedures to be followed to conduct these tests suggesting the load to be applied and order of the tests to be performed. This test is used to study the material properties and fatigue limitations of the bogie frame under different loading conditions. MTS provides a variety of options for test equipment based on application, complexity of the test and the budget. A portal frame solution is offered by MTS to achieve the most cost effective goal with no compromise to the test performance.
An MTS standard four column portal frame in combination with a multi degree-of-freedom (DOF) actuator system has the ability to control loads applied to the bogie frame in a wide range of force amplitudes, configurations and frequencies. The test rig consists of a number of servo-controlled actuators each of which is equipped with a set of swivels and a load cell attached to the specimen under evaluation. The actuators provided by MTS have an option to be equipped with hydro-static bearings to extend the service life of the actuator. The control channels can be configured in either load or displacement control mode and can be switched seamlessly without interrupting the test. Setup for this test might require a number of special fixtures to generate the proper mounting conditions on the specimen relative to the force vector and the frame position.
The Bogie Frame Evaluation process is a combination of several dynamic tests required by the established industry procedures. The amount of force, frequency and orientation of the specimen during each the test is determined by these industry standards and limitations of the available equipment. This is accomplished by means of servo hydraulic actuators supported by application software on a controller supplied with the system.
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MTS is a registered trademark of MTS Systems Corporation within the United States. This trademark may be protected in other countries. RTM No. 211177.
©2019 MTS Systems Corporation100-522-589 BogieFrameTest Printed in U.S.A. 11/19
MTS Systems Corporation 14000 Technology Drive Eden Prairie, MN 55344-2290 USA
Telephone: 1-952-937-4000 Toll Free: 1-800-328-2255 Fax: 1-952-937-4515
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E-mail: [email protected] www.mts.comISO 9001 Certified QMS
CERTIF ICATION TESTING
Government standard tests with four to six channels running block cycles load.
Example actuator sizing and quantity for testing bogie frame
Actuator Type
Force (KN)
Static Stroke (mm)
Dynamic Stroke (mm)
Frequency @Dynamic
Stroke
Qty for Locomotive Applications
Qty for Passenger Car
Applications
244.51 1000 250 3 3 2 0
244.41 500 250 3 3 2 2
244.31 250 250 4 4 4 4
244.23 150 250 4 4 2 4
244.22 100 250 4 4 4 4
244.11 50 250 6 4 6 4
SYSTEM CONFIGURATION
A typical bogie frame test system consists of a portal frame, actuators, hydraulic power supply, FlexTest controller, RPC Pro software for control and analysis, data acquisition system etc.
SIMULATION OF SERVICE CONDIT ION FOR PRODUCT DEVELOPMENT
400 kN adjustable portal frame at maximum height
RPC™ is required for accurate real-time time-history response simulation on test systems whose demands exceed conventional control capabilities.
» Multi-channel test systems which require significant input cross-coupling compensation.
» Non-linear test systems that require iterative methods to achieve desired test response.
» Multi-body test systems which require reproduction of frequency dynamics well beyond the bandwidth of closed-loop control.
16 ch Bogie Frame Test per UIC615-4
Desire & feedback, 3 hz, 16 ch
