Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Preservation And Utilization Of Finite Element Models Of Usaf Aircraft Structures
Download Preservation And Utilization Of Finite Element Models Of Usaf Aircraft Structures full books in PDF, epub, and Kindle. Read online Preservation And Utilization Of Finite Element Models Of Usaf Aircraft Structures ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Preservation and Utilization of Finite Element Models of USAF Aircraft Structures by : Warren C. Gibson
Download or read book Preservation and Utilization of Finite Element Models of USAF Aircraft Structures written by Warren C. Gibson and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem addressed by this report is that the Air Force is not getting full value for the resources expended in the development of finite element models of USAF aircraft structures, both directly and by contractors. Models developed by airframe contractors are usually not made available to the Air Force. Models that are available are often inadequately documented or verified, or their existence may be unknown to those who need them. The problem was assessed by a survey of Air Force organizations and was attacked in three ways. First, software called FEM-X was developed for storage and retrieval of finite element model data along with descriptive information about the data. The software could be used by an Air Force Finite Element Model Center. A proposal for establishment of this Center is the second aspect of modification, and distribution of aircraft models. The third subject addressed by the report is a Mil Standard that is proposed for delivery of finite element models by Air Force contractors.
Book Synopsis Preservation and Utilization of Finite Element Models of USAF Aircraft Structures by : Warren C. Gibson
Download or read book Preservation and Utilization of Finite Element Models of USAF Aircraft Structures written by Warren C. Gibson and published by . This book was released on 1991 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problem addressed by this report is that the Air Force is not getting full value for the resources expended in the development of finite element models of USAF aircraft structures, both directly and by contractors. Models developed by airframe contractors are usually not made available to the Air Force. Models that are available are often inadequately documented or verified, or their existence may be unknown to those who need them. The problem was assessed by a survey of Air Force organizations and was attacked in three ways. First, software called FEM-X was developed for storage and retrieval of finite element model data along with descriptive information about the data. The software could be used by an Air Force Finite Element Model Center. A proposal for establishment of this Center is the second aspect of modification, and distribution of aircraft models. The third subject addressed by the report is a Mil Standard that is proposed for delivery of finite element models by Air Force contractors.
Book Synopsis Finite Element Models for the Supportability of the USAF Aircraft Structures by :
Download or read book Finite Element Models for the Supportability of the USAF Aircraft Structures written by and published by . This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astron research and engineering has assessed the feasibility of implementing a USAF-wide database of finite element models for the supportability of structures of USAF aircraft. This study included: (1) An examination of various Air Force organizations and their current methods and requirements for finite element model development, analysis, and data transfer, (2) a survey to assure that adequate software is available which may be used for the development and operation of a centralized finite element database, (3) a determination of the requirements of the software and software interface to be used for creating the database, and the user interface features it must include, and (4) a method to implement the database to assure its longevity and continued effectiveness. Keywords: Finite element models; Aircraft structures; Structural integrity; Central database; Aircraft design.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 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.
Book Synopsis Practical Application of Finite Element Analysis to Aircraft Structural Design by :
Download or read book Practical Application of Finite Element Analysis to Aircraft Structural Design written by and published by . This book was released on 1986 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Feasibility of United States Air Force Finite Element Model Center by : Jerrell M. Thomas
Download or read book Feasibility of United States Air Force Finite Element Model Center written by Jerrell M. Thomas and published by . This book was released on 1988 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of establishing a centralized facility for acquiring, storing, and distributing finite element models used by the United States Air Force is investigated. Through contacts with potential finite element users, the nature of usage within the technical community is characterized. The cost-effectiveness of servicing user needs through a centralized facility is investigated. The technical approach, software, and hardware for operating the center is studied. It is concluded that such a center would be feasible and cost-effective. Finite element (FE) methods are widely recognized as the primary means of analyzing the structural integrity of aircraft. These methods evolved from rare uses in the mid-1960s to general usage in the 1970s to virtually universal usage in the 1980s; thus, the existence and completeness of FE models to confirm design adequacy for an existing aircraft is highly dependent on the aircraft vintage. However, the structural integrity of future aircraft can be expected to be supported by rather complete hierarchy FE models. At least the first generation of these models for a new aircraft is developed during the design phase of the aircraft life cycle. (KR).
Book Synopsis Practical Application of Finite Element Analysis to Aircraft Structural Design by :
Download or read book Practical Application of Finite Element Analysis to Aircraft Structural Design written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1992 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis USAF Damage Tolerant Design Handbook by :
Download or read book USAF Damage Tolerant Design Handbook written by and published by . This book was released on 1984 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis FEM-X User's Guide by : Warren Craig Gibson
Download or read book FEM-X User's Guide written by Warren Craig Gibson and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document is a User's Guide for FEM-X, a database management system for finite element models. The Guide describes the organization of finite element model data and descriptive text in FEM-X, and describes briefly the operations of model data entry and text data entry, and extraction and translation of model data. FEM-X is a window based product designed to run on engineering workstations under the X Window System. The graphical interface makes operation of FEM-X intuitive, with on-line help available at each stage. Discussions of CADDB, the database system used for FEM-X, and its query software, ICE, are also provided.
Download or read book ANALYZE written by Vipperla B. Venkayya and published by . This book was released on 1978* with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report contains documentation for the program 'ANALYZE'. The program library consists of a bar, a membrane triangle, a quadrilateral, and a shear panel. The equations of finite element analysis, element formulations, program organization, and subroutine descriptions provide a comprehensive theoretical background for the program. The input and output instructions together with the sample problem and the results should provide adequate information for the use of this program. 'ANALYZE' is an in-house program and can be used on INTERCOM for problems up to 150 to 200 degrees of freedom and a comparable number of elements. This program is extremely useful in training engineers in the use of finite element programs, in the development of finite element models of large aerospace structures, and in research in structural analysis and optimization. (Author).
Book Synopsis Finite Element Modeling and Optimization of Aerospace Structures by : Walter Joseph Dwyer
Download or read book Finite Element Modeling and Optimization of Aerospace Structures written by Walter Joseph Dwyer and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents a study made of the optimization of typical aircraft structural components using the Automated Structural Optimization Program (ASOP) described in AFFDL-TR-70-118. The structures examined were a fuselage structure for a proposed space shuttle orbiter and a wing structure for the same vehicle. Examples are given of practical finite element modeling of these structures.
Book Synopsis Finite Element Modeling and Optimization of Aerospace Structures by : Walter J. Dwyer
Download or read book Finite Element Modeling and Optimization of Aerospace Structures written by Walter J. Dwyer and published by . This book was released on 1972 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents a study made of the optimization of typical aircraft structural components using the Automated Structural Optimization Program (ASOP) described in AFFDL-TR-70-118. The structures examined were a fuselage structure for a proposed space shuttle orbiter and a wing structure for the same vehicle. Examples are given of practical finite element modeling of these structures.
Download or read book Aeronautical Engineering written by and published by . This book was released on 1991 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Massachusetts Institute of Technology. Aeroelastic and Structures Research Laboratory Publisher : ISBN 13 : Total Pages :107 pages Book Rating :4.:/5 (421 download)
Book Synopsis Numerical Computation of Stress Intensity Factors for Aircraft Structural Details by the Finite Element Method by : Massachusetts Institute of Technology. Aeroelastic and Structures Research Laboratory
Download or read book Numerical Computation of Stress Intensity Factors for Aircraft Structural Details by the Finite Element Method written by Massachusetts Institute of Technology. Aeroelastic and Structures Research Laboratory and published by . This book was released on 1976 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of a program of research involving application of the hybrid finite element method to fracture mechanics analyses of several typical aircraft structural details are presented. The performance properties of the specialized finite element building blocks are reviewed. Capabilities of the computer analysis codes are discussed with regard to valid parameter ranges, core storage requirements and execution times. Numerical results obtained from extended parameter studies are presented in the form of handbook charts. Suggestions are offered for future improvements and comments are made about the limits of applicability of the data base to airframe damage tolerance analysis.
Book Synopsis Application of the Hybrid Finite Element Method to Aircraft Repairs by : L. Chen
Download or read book Application of the Hybrid Finite Element Method to Aircraft Repairs written by L. Chen and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A hybrid finite element approach is presented for the analysis of cracked panels with riveted doublers in airframe structures. The method uses the super element developed by Tong to model the cracked panel with rivet holes, springs to model the rivets, and regular finite elements to model the doubler. The super element accurately models the crack and rivet holes of the skin while the regular finite element method provides the versatility to take into account the variety of doubler designs. Numerical results are presented to demonstrate the efficiency and accuracy of this approach, and to compare different doubler designs.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992 with total page 1424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
