NDLI: Calculation of stress intensity factors in an isotropic multicracked plate: part 2: symbolic/numeric implementation

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Calculation of stress intensity factors in an isotropic multicracked plate: part 2: symbolic/numeric implementation

Content Provider	NASA Technical Reports Server (NTRS)
Author	Tan, H. Q. Binienda, W. K. Xu, M. H. Arnold, S. M.
Copyright Year	1992
Description	Analytical derivations of stress intensity factors (SIF's) of a multicracked plate can be complex and tedious. Recent advances, however, in intelligent application of symbolic computation can overcome these difficulties and provide the means to rigorously and efficiently analyze this class of problems. Here, the symbolic algorithm required to implement the methodology described in Part 1 is presented. The special problem-oriented symbolic functions to derive the fundamental kernels are described, and the associated automatically generated FORTRAN subroutines are given. As a result, a symbolic/FORTRAN package named SYMFRAC, capable of providing accurate SIF's at each crack tip, was developed and validated. Simple illustrative examples using SYMFRAC show the potential of the present approach for predicting the macrocrack propagation path due to existing microcracks in the vicinity of a macrocrack tip, when the influence of the microcrack's location, orientation, size, and interaction are taken into account.
File Size	1178571
Page Count	44
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19930001265
Archival Resource Key	ark:/13960/t15n14g5w
Language	English
Publisher Date	1992-09-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Microcracks Crack Tips Fracture Mechanics Fortran Crack Propagation Isotropy Subroutines Stress Intensity Factors Algorithms Plates Structural Members Computation Applications Programs Computers Elastic Properties Prediction Analysis Techniques Symbolic Programming Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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