Download or read book A Study of Guyed Towers Considered as Conservative Nonlinear Structural Systems written by Vernon James Meyers and published by . This book was released on 1963 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Series written by and published by . This book was released on 1964 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Series Engineering Experiment Station written by Purdue University. Engineering Experiment Station and published by . This book was released on 1963 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts written by and published by . This book was released on 1963 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstracts of dissertations and monographs in microform.

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1970 with total page 1090 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering Bulletin written by and published by . This book was released on 1963 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geodex Structural Information Service written by Geodex International and published by . This book was released on 1966 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computer aided Free Vibration Analysis of Guyed Towers written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Dissertation Index 1861 1972 Engineering civil electrical and industrial written by Xerox University Microfilms and published by . This book was released on 1973 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computer aided Free Vibration Analysis of Guyed Towers written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Guyed towers are used for communication purposes and are frequently designed to heights of 300 meters (1000 feet). A guyed tower is a non-linear structure in which the mast, typically consisting of multiple truss members is supported laterally at several points by inclined guy cables. The guy cables are anchored to a foundation and are pre-tensioned. Wind induced vibrations may result in a fatigue failure of a guy anchor linkage or a cable, ultimately causing the collapse of an entire tower. In addition, excessive deflections or vibrations may interfere with communications and control systems resulting in serviceability failure. According to design standards, a basic understanding of the dynamic characteristics of guyed towers is important. This study develops an easy to use software package, aimed at practicing engineers, to determine free-vibration characteristics (natural frequencies and mode shapes) of guyed towers. The analysis presented herein employs the finite element method to determine the naturalfrequencies and mode shapes of guyed towers. The structural system is broken down into two main components, the tower mast and guy cables. Utilizing an equivalent beam-column analysis that take into consideration different lacing patterns, the mast is modelled as a beam-column with equivalent properties. A three-dimensional cable finite element following a catenary or parabolic profile is used to model guy cables. Several comparisons are made to ensure the accuracy of the cable element and the guyed tower model. Selected numerical results are presented for natural frequencies and mode shapes of a few representative towers. The influence of cable tension, lacing pattern of the mast and configuration of guy cables is also examined. The software package can be extended to include forced vibration response through the modal superposition method.

Download or read book Nonlinear Finite Element Modeling and Characterization of Guyed Towers Under Severe Loading written by Haijian Shi and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Guyed towers have been widely employed in the telecommunication industry. This study thus intends to improve the understanding and analysis of guyed towers that undergoes not only large deformation, but also large strain. Impulsive loads are potential threat to the safety of guyed towers besides wind load, earthquake, and ice storm. This research explores the area using an already developed P-I diagram method and nonlinear finite element modeling to provide an efficient and effective way for structural integrity evaluation for guyed towers. The mechanical characteristics of basic components of guyed towers are investigated first. Because guyed towers with large defection also have large strain in some parts, material nonlinearity is introduced by improving the existing FEM codes for trusses and cables. It is found that the improved methodology can well predict the performance of structures and tremendous difference exists between elastic analysis and inelastic analysis. Under seismic loading condition, inelasticity in material can help dissipate the inputted seismic energy and reduce the intensity of structural response. To evaluate the guyed tower's safety under impulsive loads, relative P-I formulas have been derived based on existing transverse velocity profiles of rigid plastic beams under impulsive loads. The impact of boundary condition and load types on the response is investigated. It is found under certain conditions only one failure mode is possible. But shear failure and bending failure can coexist under very severe impulsive loads. Most guyed towers are expected to survive light or medium impulsive loads due to their high redundancy and small loading area.

Download or read book A Study of the Stability of Guyed Towers written by John Thixton Gaunt and published by . This book was released on 1966 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1982 with total page 660 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 Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Commencement Booklet Containing Author title List of Theses written by Purdue University and published by . This book was released on 1956 with total page 932 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CANCAM Proceedings written by and published by . This book was released on 1967 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Non Linear Behavior of Guyed Towers written by Chi-Yuan Ling and published by . This book was released on 1980 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: