|
|
|
||
Last update: RNDr. Josef Datel, Ph.D. (01.06.2009)
|
|
||
Last update: RNDr. Josef Datel, Ph.D. (01.06.2009)
Herle, I. (2003) Základy matematického modelování v geomechanice. UK Praha, Karolinum. Muir Wood, D., 2004, Geotechnical modelling. Ed. Applied Geotechnics, Spon Press, London Crisfield, M.A. (1997) Non-linear finite element analysis of solids and structures. Vol. I: Essentials. Wiley, Chichester. |
|
||
Last update: prof. RNDr. David Mašín, Ph.D. (01.11.2011)
Písemná zkouška z teoretických znalostí, praktická zkouška řešení zadané geotechnické úlohy pomocí metody konečnách prvků. |
|
||
Last update: RNDr. Josef Datel, Ph.D. (01.06.2009)
1.Continuum mechanics Mathematical background. Tensorial calculus, tensor invariants, trace, devaitor. Continuum mechanics. Cauchy stress, stress invariants, Mohr's circle, octahedral plane. Strain. Small strain, strain invariants. Large strain, stretching tensor, objective stress rate. 2. Constitutive models Linear isotropic elasticity. Rate formulation, stiffness matrix, calibration of parameters. Linear anisotropic elasticity. Trasversal isotropy. General formulation with five parameters, simplified formulation by Graham-Houlsby with three parameters. Non-linear elasticity, Ohde equation for oedometric compression, hyperbolic elasticity for prediction of shear tests, Duncan-Chang model, small-strain stiffness models. Ideal plasticity. Elasto-plastic stiffness matrix, yield surface, plastic potential, plastic multiplier. Mohr-Coulomb, Drucker-Prager, Matsuoka-Nakai yield surfaces. Mohr-Coulomb model, calibration of parameters, shortcommings. Hardening plasticity. Plasticity modulus, calculation of stiffness matrix from consistency condition. Isotropic hardening, cap-type models. Modified Cam clay model. Incoropration of critical state concept, calibration of parameters. Kinematic and mixed hardening. Bounding surface plasticity. Hypoplasticity. Rate formulation, basic features. Rheological models. Kelvin's model, Maxwell's model. Viskoplasticity. 3. Numerical methods Mass-balance equations, momentum conservation. Boundary conditions, initial conditions. Well-possedness. Finite difference method. Finite element method. Simple example with springs, formulation of finite elements, Finite element equations, assemblage and solution methods - Newton-Raphson method, initial stiffness method. 4. Numerical methods for discontinuum Distinct element method. Principles, advantages and shortcommings. |