Open AccessTowards rigorous boundary value level sensitivity analyses using FEM
Author(s) -
Hossein Tahershamsi,
Jelke Dijkstra
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/710/1/012072
Subject(s) - geotechnics , finite element method , sensitivity (control systems) , boundary value problem , compression (physics) , computer science , mathematics , boundary (topology) , mathematical optimization , structural engineering , engineering , geotechnical engineering , mathematical analysis , materials science , electronic engineering , composite material
The increased complexity of contemporary constitutive models for soils requires a rigorous method to evaluate the effect of the large number of model parameters on the results. Ideally, the interaction effects between the individual parameters should also be quantified. This is achieved by combining a state-of-the-art global sensitivity method with a general purpose Finite Element Method (FEM) for geotechnics. The method is tested for the non-trivial example of coupled hydro-mechanical response of clay in oedometric compression. The results indicate that proposed method for rigorous sensitivity analysis provides a feasible, yet more powerful, alternative to the method commonly used by engineers, i.e. the sequences of one-factor-at-a-time (OFAT) trails.