Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing
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Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing
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Author :
language : en
Publisher: DIANE Publishing
Release Date : 2003
Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-05-31
Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-31 with categories.
A large fixture was designed and constructed for modal vibration testing of International Space Station elements. This fixed-base test fixture, which weighs thousands of pounds and is anchored to a massive concrete floor, initially utilized spherical bearings and pendulum mechanisms to simulate Shuttle orbiter boundary constraints for launch of the hardware. Many difficulties were encountered during a checkout test of the common module prototype structure, mainly due to undesirable friction and excessive clearances in the test-article-to-fixture interface bearings. Measured mode shapes and frequencies were not representative of orbiter-constrained modes due to the friction and clearance effects in the bearings. As a result, a major redesign effort for the interface mechanisms was undertaken. The total cost of the fixture design, construction and checkout, and redesign was over $2 million. Because of the problems experienced with fixed-base testing, alternative free-suspension methods were studied, including the residual flexibility and mass-additive approaches. Free-suspension structural dynamics test methods utilize soft elastic bungee cords and overhead frame suspension systems that are less complex and much less expensive than fixed-base systems. The cost of free-suspension fixturing is on the order of tens of thousands of dollars as opposed to millions, for large fixed-base fixturing. In addition, free-suspension test configurations are portable, allowing modal tests to be done at sites without modal test facilities. For example, a mass-additive modal test of the ASTRO-1 Shuttle payload was done at the Kennedy Space Center launch site. In this Technical Memorandum, the mass-additive and residual flexibility test methods are described in detail. A discussion of a hybrid approach that combines the best characteristics of each method follows and is the focus of the study.Tinker, M. L.Marshall Space Flight CenterTEST EQUIPMENT; DYNAMIC TESTS; DYNAMIC STRUCTURAL ANAL
Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing Nasa Tm 2003 212343 National Aeronautics And Space Ad
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 2003*
Hybrid Residual Flexibility Mass Additive Method For Structural Dynamic Testing Nasa Tm 2003 212343 National Aeronautics And Space Ad written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003* with categories.
Fundamentals Of Structural Dynamics
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Author : Roy R. Craig, Jr.
language : en
Publisher: John Wiley & Sons
Release Date : 2006-07-11
Fundamentals Of Structural Dynamics written by Roy R. Craig, Jr. and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-07-11 with Technology & Engineering categories.
From theory and fundamentals to the latest advances in computational and experimental modal analysis, this is the definitive, updated reference on structural dynamics. This edition updates Professor Craig's classic introduction to structural dynamics, which has been an invaluable resource for practicing engineers and a textbook for undergraduate and graduate courses in vibrations and/or structural dynamics. Along with comprehensive coverage of structural dynamics fundamentals, finite-element-based computational methods, and dynamic testing methods, this Second Edition includes new and expanded coverage of computational methods, as well as introductions to more advanced topics, including experimental modal analysis and "active structures." With a systematic approach, it presents solution techniques that apply to various engineering disciplines. It discusses single degree-of-freedom (SDOF) systems, multiple degrees-of-freedom (MDOF) systems, and continuous systems in depth; and includes numeric evaluation of modes and frequency of MDOF systems; direct integration methods for dynamic response of SDOF systems and MDOF systems; and component mode synthesis. Numerous illustrative examples help engineers apply the techniques and methods to challenges they face in the real world. MATLAB(r) is extensively used throughout the book, and many of the .m-files are made available on the book's Web site. Fundamentals of Structural Dynamics, Second Edition is an indispensable reference and "refresher course" for engineering professionals; and a textbook for seniors or graduate students in mechanical engineering, civil engineering, engineering mechanics, or aerospace engineering.
Technology For The Stars Extending Our Reach
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Author :
language : en
Publisher:
Release Date : 1996
Technology For The Stars Extending Our Reach written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1987
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Mechanics, Applied categories.
35th Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference
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Author :
language : en
Publisher:
Release Date : 1994
35th Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Airplanes categories.
Statistically Generated Weighted Curve Fit Of Residual Functions For Modal Analysis Of Structures
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Author : Paul Stanley Bookout
language : en
Publisher:
Release Date : 1995
Statistically Generated Weighted Curve Fit Of Residual Functions For Modal Analysis Of Structures written by Paul Stanley Bookout and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Modal analysis categories.
Thirty Sixth Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference And Aiaa Asme Adaptive Structures Forum
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Author :
language : en
Publisher:
Release Date : 1995
Thirty Sixth Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference And Aiaa Asme Adaptive Structures Forum written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Airplanes categories.
Aiaa Journal
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Author : American Institute of Aeronautics and Astronautics
language : en
Publisher:
Release Date : 2003
Aiaa Journal written by American Institute of Aeronautics and Astronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Aeronautics categories.