39830627
Description
Mind Map by Abraham Mathews, updated more than 1 year ago
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Created by Abraham Mathews
almost 2 years ago
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Why Bazand Crack Band approach solves zero
energy dissipation with mesh density reduction.
- Strain softening
- Behaviour of material as
the material stress
decreases as stress
increases, post "peak
stress"
- Models degradation of
materials during
damage/crack formation
- Behaviour of material as
the material stress
decreases as stress
increases, post "peak
stress"
- Mesh dependencies
- Mesh
- Discretisation of
material into small
elements through
numerical simulation
- Discretisation of
material into small
elements through
numerical simulation
- Mesh dependency
- Results of simulation
depends on size of
elements
- Results of simulation
depends on size of
elements
- Mesh
- Zero energy
dissipation problem
- Caused by finer mesh
- Energy dissipation during a
crack growth approaches
zero
- If energy required to
propagate crack is
ZERO, the model is no
longer realistic.
- If energy required to
propagate crack is
ZERO, the model is no
longer realistic.
- Energy dissipation during a
crack growth approaches
zero
- Energy dissipation
- Energy consumed to break material
- Related to fracture toughness of material.
- Energy consumed to break material
- Caused by finer mesh
- Bazand Crack band
- Fracture energy is spread over a
FINITE band width (crack band)
- independant to mesh size.
- energy dissipation
is no longer a
problem with finer
mesh.
- energy dissipation
is no longer a
problem with finer
mesh.
- rather than a single point
- independant to mesh size.
- resolves zero energy dissipation
- Fracture energy is spread over a
FINITE band width (crack band)
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