Download or read book Constrained Viscoelastic Layer Damping of Thick Aluminum Plates written by Michael John Bateman and published by . This book was released on 1990 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern naval warfare has been increasingly dependent upon the acoustic silencing of the participants. Constrained viscoelastic layer damping of vibrating elements is one method which can be used to meet acoustic silencing goals. This paper considers constrained viscoelastic layer damping treatments applied to a thick aluminum plate, including single layer, double layer, a milled pocket plate, and a milled 'floating element' configuration. High modal damping values were obtained for each damping configuration. The Modal Strain Energy method, using finite element analysis to estimate modal loss factors, was investigated for use as a tool in constrained viscoelastic layer damping design. A comparison of experimentally measured frequency response and modal loss factors with those predicted by the modal stain energy method is presented to confirm the possible use of the modal strain energy method as a design tool. Keywords: Vibration, Damping, Viscoelastic material, Constrained layer damping. (JS).
Download or read book Passive Vibration Control of Thick Aluminum Plates Using Viscoelastic Layered Damping written by Hsin-Chih Ping and published by . This book was released on 1990 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ship silencing is an important issue of modern naval warfare. For a long time, naval ship engineers have tried to reduce the noise from the vibration of shipboard components. Ths is important for a ship to accomplish its mission with good survivability. One method, called constrained viscoelastic layer method, uses shear deformation in viscoelastic material to absorb and dissipate the vibrational energy of the system. It shows promise in damping over a broad frequency spectrum of vibration. A finite element technique developed by Johnson and Kienholz Ref. 1 known as the Modal Strain Energy (MSE) method which uses the ratio of strain energy for each mode shape to approximate the modal damping of a structure for a given constrained viscoelastic damping system. The method is very attractive due to its simple concept and very useful because it can be applied to any general cases with arbitrary shape by using the finite element method.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Analytical and Experimental Investigation of Constrained Viscoelastic Layer Damping for a Plate and Shell Model written by James Robert Nault and published by . This book was released on 1988 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of constrained viscoelastic layer damping treatments has recently been found to be effective in reducing unwanted resonant vibrations in structures. The proper design of such damping treatments has been difficult, however, since closed form equations to describe system behavior can only be used for simple beams and plates. In addition, finite element analysis has been difficult since the material properties of viscoelastic materials show a marked dependence on frequency and temperature, resulting in the need to run an excessive number of finite element analyses for each design a proper constrained viscoelastic layer damping treatment for a test structure consisting of two concentric cylinders connected by four vanes. Constrained Layer Damping, Plates, Shells finite elements modeling. (mjm).
Download or read book Trends in the Analysis and Design of Marine Structures written by Carlos Guedes Soares and published by CRC Press. This book was released on 2019-04-15 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Trends in the Analysis and Design of Marine Structures is a collection of the papers presented at MARSTRUCT 2019, the 7th International Conference on Marine Structures held in Dubrovnik, Croatia, 6-8 May 2019. The MARSTRUCT series of Conferences started in Glasgow, UK in 2007, the second event of the series having taken place in Lisbon, Portugal in March 2009, the third in Hamburg, Germany in March 2011, the fourth in Espoo, Finland in March 2013, the fifth in Southampton, UK in March 2015, and the sixth in Lisbon, Portugal in May 2017. This Conference series specialises in dealing with Ships and Offshore Structures, addressing topics in the fields of: - Methods and Tools for Loads and Load Effects - Methods and Tools for Strength Assessment - Experimental Analysis of Structures - Materials and Fabrication of Structures - Methods and Tools for Structural Design and Optimisation - Structural Reliability, Safety and Environmental Protection. Trends in the Analysis and Design of Marine Structures is an essential document for academics, engineers and all professionals involved in the area of analysis and design of Ships and Offshore Structures. About the series: The ‘Proceedings in Marine Technology and Ocean Engineering’ series is devoted to the publication of proceedings of peer-reviewed international conferences dealing with various aspects of ‘Marine Technology and Ocean Engineering’. The Series includes the proceedings of the following conferences: the International Maritime Association of the Mediterranean (IMAM) conferences, the Marine Structures (MARSTRUCT) conferences, the Renewable Energies Offshore (RENEW) conferences and the Maritime Technology (MARTECH) conferences. The ‘Marine Technology and Ocean Engineering’ series is also open to new conferences that cover topics on the sustainable exploration and exploitation of marine resources in various fields, such as maritime transport and ports, usage of the ocean including coastal areas, nautical activities, the exploration and exploitation of mineral resources, the protection of the marine environment and its resources, and risk analysis, safety and reliability. The aim of the series is to stimulate advanced education and training through the wide dissemination of the results of scientific research.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1991 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure Borne Sound written by L. Cremer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since structure-borne sound plays an important role in noise control, material testing and machine diagnosis, the relevant properties of the most important elements of a construction (plates, beams and shells) are investigated. Measurement techniques, equations of motion, formulas for wave speeds, resonance frequencies, impedances, transmission coefficients etc. are given. The different damping mechanisms and the radiation properties are treated. The statistical energy analysis (SEA) is also presented. This new edition has been enlarged to include also waves on orthotropic plates, and the vibration and radiation of cylindrical shells.
Download or read book Structure Borne Sound written by Lothar Cremer and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whcn the original German edition of this book first appeared in print, the undcrsigned was asked to review it for an English-language journal. In the course of this review process he was so struck by the book's unusual approach, as well as by the realization that no similar collection of information was available in English, that he conceived thc idea of undertaking this translation. Arrangements with the original authors and with the publisher were completed late in 1969; the translation task was begun at that. time and occupied nearly two and onc-half years-largcly because the undersigned's other professional act.ivities permitted him toderote only hisspare time to the translation effort. Because this passage of time also brought with it some advances in the state of t.he art, an attempt was made to include the most significant of these aclvances, as well as newer references and some minor correc tions, in the translatecl rersion. Except for these changes, which were macle with the enthusiastic endorsement and collaboration of the origi nal authors, the translatecl rersion remains very close to the original. In fact, the translator took special care to preserve not only the mean ing, but also the "flaror", of the original text. The translator is most grateful to Professor L. Cremer and Dr
Download or read book Internal Friction Damping and Cyclic Plasticity written by B. J Lazan and published by ASTM International. This book was released on 1965 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of Damping 89 written by and published by . This book was released on 1989 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WADC University of Minnesota Conference on Acoustical Fatigue written by Walter J. Trapp and published by . This book was released on 1961 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Engineering for Industry written by and published by . This book was released on 1996 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1959 with total page 1276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise and Vibration Control on Ships written by Raymond Fischer and published by Springer Nature. This book was released on with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Topics in Modal Analysis Testing Volume 10 written by Michael Mains and published by Springer. This book was released on 2016-05-26 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Topics in Modal Analysis & Testing, Volume 10. Proceedings of the 34th IMAC, A Conference and Exposition on Dynamics of Multiphysical Systems: From Active Materials to Vibroacoustics, 2016, the tenth volume of ten from the Conference brings together contributions to this important area of research and engineering. The collection presents early findings and case studies on fundamental and applied aspects of Structural Dynamics, including papers on: • Modal Analysis, Measurements & Parameter Estimation • Basics of Modal Analysis • Additive Manufacturing & Modal Testing of Printed Parts • Modal Analysis & Model Updating • Modal Testing Methods
Download or read book Progress in the Analysis and Design of Marine Structures written by Carlos Guedes Soares and published by CRC Press. This book was released on 2017-04-28 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in the Analysis and Design of Marine Structures collects the contributions presented at MARSTRUCT 2017, the 6th International Conference on Marine Structures (Lisbon, Portugal, 8-10 May 2017). The MARSTRUCT series of Conferences started in Glasgow, UK in 2007, the second event of the series having taken place in Lisbon, Portugal in March 2009, the third in Hamburg, Germany in March 2011, the fourth in Espoo, Finland in March 2013, and the fifth in Southampton, UK in March 2015. This Conference series deals with Ship and Offshore Structures, addressing topics in the areas of: - Methods and Tools for Loads and Load Effects - Methods and Tools for Strength Assessment - Experimental Analysis of Structures - Materials and Fabrication of Structures - Methods and Tools for Structural Design and Optimisation, and - Structural Reliability, Safety and Environmental Protection Progress in the Analysis and Design of Marine Structures is essential reading for academics, engineers and all professionals involved in the design of marine and offshore structures.
Download or read book Paper written by and published by . This book was released on 1985 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
