NDLI: Residual life and strength estimates of aircraft structural components with msd/med

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Residual life and strength estimates of aircraft structural components with msd/med

Content Provider	NASA Technical Reports Server (NTRS)
Author	Park, Jai H. Singh, Ripudaman Atluri, Satya N.
Copyright Year	1994
Description	Economic and safe operation of the flight vehicles flying beyond their initial design life calls for an in-depth structural integrity evaluation of all components with potential for catastrophic damages. Fuselage panels with cracked skin and/or stiffening elements is one such example. A three level analytical approach is developed to analyze the pressurized fuselage stiffened shell panels with damaged skin or stiffening elements. A global finite element analysis is first carried out to obtain the load flow pattern through the damaged panel. As an intermediate step, the damaged zone is treated as a spatially three-dimensional structure modeled by plate and shell finite elements, with all the neighboring elements that can alter the stress state at the crack tip. This is followed by the Schwartz-Neumann alternating method for local analysis to obtain the relevant crack tip parameters that govern the onset of fracture and the crack growth. The methodology developed is generic in nature and aims at handling a large fraction of problem areas identified by the Industry Committee on Wide-Spread Fatigue Damage.
File Size	893474
Page Count	13
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19950013069
Archival Resource Key	ark:/13960/t9q28v236
Language	English
Publisher Date	1994-09-01
Access Restriction	Open
Subject Keyword	Aircraft Design, Testing And Performance Finite Element Method Panels Fatigue Life Component Reliability Crack Tips Fatigue Materials Aircraft Reliability Reliability Analysis Fuselages Aircraft Structures Residual Strength Crack Propagation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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