Civil Engineering Reference
In-Depth Information
- Principle: non-linear elasticity, spherical and deviatoric parts separated.
- Application field: low pressure level.
- Can model: sliding.
- Cannot model: negative strain-hardening, compaction, damage.
- Triaxial stress state:
V
V V V
[2.35]
60 MPa;
!
!
1
1
2
3
- Strain-stress relationship:
V
H
W
J
[2.36]
3
K
and
G
oct
s
oct
oct
s
oct
1
3
H
H H H
[2.37]
oct
1
2
3
and
2
3
1/ 2
ª
2
2
2
º
J
H H
H H
H H
[2.38]
«
»
oct
1
2
2
3
3
1
¬
¼
[2.39]
KK
H
GG
J
s
s
t
s
s
t
2.6.2.
Models based on the theory of plasticity
2.6.2.1
. Elwi, Murray
- Reference: [ELW 79].
- Principle: elasto-plasticity.
- Application field: low pressure.
- Can model: shear.
- Cannot model: compaction and strain-hardening.
- Model data: Argyris failure surface (5-parameter surface, not closed on the
hydrostatic axis).
Search WWH ::
Custom Search