Print Email Facebook Twitter 3-D stochastic finite elements for thermal creep analysis of piping structures with spatial material inhomogeneities Title 3-D stochastic finite elements for thermal creep analysis of piping structures with spatial material inhomogeneities Author Appalanaidu, Y. (Indian Institute of Technology Madras) Roy, A. (TU Delft Applied Mechanics) Gupta, S. (Indian Institute of Technology Madras) Date 2017-05-19 Abstract A stochastic finite element-based methodology is developed for creep damage assessment in pipings carrying high-temperature fluids. The material properties are assumed to be spatially randomly inhomogeneous and are modelled as 3-D non-Gaussian fields. A spectral-based approach for random field discretization that preserves exactly the non-Gaussian characteristics is used in developing the stochastic finite element model. The meshing used in random field discretization is distinct from FE meshing, depends on the correlation characteristics of the random fields and is computationally efficient. The methodology enables estimating the failure probability and the most likely regions of failure in a section of a circular pipe. To reference this document use: http://resolver.tudelft.nl/uuid:55bb503f-a686-4629-b646-a6529a927d59 DOI https://doi.org/10.1007/s00707-017-1865-9 ISSN 0001-5970 Source Acta Mechanica, 228 (9), 3039-3062 Part of collection Institutional Repository Document type journal article Rights © 2017 Y. Appalanaidu, A. Roy, S. Gupta Files PDF 10.1007_s00707_017_1865_9.pdf 2.16 MB Close viewer /islandora/object/uuid:55bb503f-a686-4629-b646-a6529a927d59/datastream/OBJ/view