Print Email Facebook Twitter Useful lifetime prediction software for plane semi-cracks in 3-D solid configurations Title Useful lifetime prediction software for plane semi-cracks in 3-D solid configurations Author Lof, C.J. Institution National Aerospace Laboratory NLR Date 1986-09-30 Abstract Computer programs are described to be used for fracture control purposes. Crack growth lifetimes can be predicted for plane cracks in 3-D structures. Values for stress intensity (K-) distributions at crack fronts are derived from data being available from literature for a restricted number of simple configurations. For arbitrary configurations the K-data are derived from inite element calculations. In that case efficient use is made of a ethod to find K-derivatives with respect to the crack extension. Procedures are included to generate input data for finite element calculations that are particularly suitable for the calculations of stress intensity facors Subject Crack propagationCrack tipsFatigue lifeStress intensity factorsStress concentrationFinite element methodPrediction analysis techniquesComputer programsCrack geometryJ intergralFracture mechanicsComputational grids To reference this document use: http://resolver.tudelft.nl/uuid:4edf0ae7-215c-4958-b8e9-3dadda05e00f Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR-TR 86099 U Part of collection Aerospace Engineering Reports Document type report Rights (c)1986 National Aerospace Laboratory NLR Files campus only