Determination of the local tensile axis direction in a tem in situ strained γ′ single crystal—a finite element approach

1990 ◽  
Vol 38 (5) ◽  
pp. 825-837 ◽  
Author(s):  
A. Coujou ◽  
Ph. Lours ◽  
N.A. Roy ◽  
D. Caillard ◽  
N. Clement
Keyword(s):  
Finite Element ◽  
Single Crystal ◽  
Tensile Axis ◽  
Finite Element Approach ◽  
Axis Direction ◽  
Element Approach

scholarly journals Swelling of a hemi-ellipsoidal ionic hydrogel for determination of material properties of deposited thin polymer films: an inverse finite element approach

Soft Matter ◽  
2013 ◽  
Vol 9 (24) ◽  
pp. 5815 ◽  
Author(s):  
Victorien Prot ◽  
Hrafn Mar Sveinsson ◽  
Kamila Gawel ◽  
Ming Gao ◽  
Bjørn Skallerud ◽  
...  
Keyword(s):  
Finite Element ◽  
Polymer Films ◽  
Material Properties ◽  
Thin Polymer Films ◽  
Finite Element Approach ◽  
Thin Polymer ◽  
Element Approach

scholarly journals A tridimensional finite element approach to model a tunnel with shotcrete and precast concrete

2016 ◽  
Vol 9 (3) ◽  
pp. 403-413 ◽  
Author(s):  
P. V. Fiore ◽  
D. B. Maghous ◽  
A. Campos Filho
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Analytical Solution ◽  
Precast Concrete ◽  
Measured Data ◽  
Concrete Lining ◽  
Finite Element Approach ◽  
Element Approach ◽  
Elastic Lining

ABSTRACT This paper describes a numerical simulation with 3D finite elements of a tunnel. The viscoplastic law of Perzyna represents the rockmass behavior. The concrete, shotcrete or precast, is modeled as a viscoelastic material through the Maxwell and Kelvin chain models. Finite element simulations are performed by incorporating subroutines for viscoelastic concrete models in the ANSYS code. The method to simulate tunnel excavations is by activating and deactivating elements in sequential steps. In the first part of the paper two validations are performed. The analytical solution and the deformation achieved on the stabilization in the ANSYS code are compared with an unlined tunnel. A lined tunnel, with an elastic and viscoplastic rockmass combined with an elastic lining, is compared with the results of the GEOMEC91 code. In the second part, it is compared the same tunnel with two different concrete lining for two chain models. Finally, it is modeled the Kielder experimental tunnel, which in situ measured data is available.

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