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Fast Identification of Poroelastic Parameters from Indentation Tests

M.Galli , M.L.Oyen1

1 Cambridge University Engineering Dept.,Trumpington St., Cambridge, CB2 1PZ, UK

Computer Modeling in Engineering & Sciences 2009, 48(3), 241-270.


A novel approach is presented for the identification of constitutive parameters of linear poroelastic materials from indentation tests. Load-controlled spherical indentation with a ramp-hold creep profile is considered. The identification approach is based on the normalization of the time-displacement indentation response, in analogy to the well-known one-dimensional consolidation problem. The identification algorithm consists of two nested optimization routines, one in the time-displacement domain and the other in a normalized domain. The procedure is validated by identifying poroelastic parameters from the displacement-time outputs of finite element simulations; the new identification scheme proves both quantitatively reliable and fast. The procedure is also tested on the identification of the constitutive parameters of gelatin gel and bone from experimental indentation data and succeeds in providing quantitative results almost in real time.


Cite This Article

APA Style
, M., M.L.Oyen, (2009). Fast identification of poroelastic parameters from indentation tests. Computer Modeling in Engineering & Sciences, 48(3), 241-270.
Vancouver Style
M, M.L.Oyen . Fast identification of poroelastic parameters from indentation tests. Comput Model Eng Sci. 2009;48(3):241-270
IEEE Style
M. and M.L.Oyen, "Fast Identification of Poroelastic Parameters from Indentation Tests," Comput. Model. Eng. Sci., vol. 48, no. 3, pp. 241-270. 2009.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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