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Fatigue crack growth model RANDOM2 user manual, appendix 1The FORTRAN program RANDOM2 is documented. RANDOM2 is based on fracture mechanics using a probabilistic fatigue crack growth model. It predicts the random lifetime of an engine component to reach a given crack size. Included in this user manual are details regarding the theoretical background of RANDOM2, input data, instructions and a sample problem illustrating the use of RANDOM2. Appendix A gives information on the physical quantities, their symbols, FORTRAN names, and both SI and U.S. Customary units. Appendix B includes photocopies of the actual computer printout corresponding to the sample problem. Appendices C and D detail the IMSL, Ver. 10(1), subroutines and functions called by RANDOM2 and a SAS/GRAPH(2) program that can be used to plot both the probability density function (p.d.f.) and the cumulative distribution function (c.d.f.).
Document ID
19890014519
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Boyce, Lola (Texas Univ. San Antonio, TX, United States)
Lovelace, Thomas B. (Texas Univ. San Antonio, TX, United States)
Date Acquired
September 5, 2013
Publication Date
January 1, 1989
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.26:184939
NASA-CR-184939
Accession Number
89N23890
Funding Number(s)
CONTRACT_GRANT: NAG3-867
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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