DAMAGE
| (Object Data -3D) | |
|---|---|
| Update History: V11 – Integration Point output option has been added for 3D brick element. | Last updated on : 12-08-2013 |
DAMAGE Object, Ndata, DefDamage, Nnode, DefNodeDamage, nDim
(if “element” stress is requested for output, ELMNOD=0)
- Element(1), Damage(1,1),…., Damage(NDim,1)
-
:
Element(Ndata), Damage(1,Ndata),…., Damage(NDim,Ndata)
(if dual “element + nodal” stress is requested for output, ELMNOD=2)
- Element(1), Damage(1,1),…., Damage(NDim,1)
-
:
Element(Ndata), Damage(1,Ndata),….., Damage(NDim,Ndata)
- Node(1), DamgNode(1,1),…., DamgNode(NDim,1)
-
:
Node(Nnode),DamgNode(1, Nnode),…,DamgNode(NDim, Nnode)
or
(if “Integration Point” stress is requested for output, ELMNOD=3)
DAMAGE Object, Ndata, DefDamage, Nnode(=0), DefNodeDamage(=0.0), nDim, NIntPts
Element(1)
- Damage(1,1,1),……, Damage(NDim1,1)
-
:
- Damage(1, NIntPts,1),……, Damage(NDim, NIntPts,1)
-
:
Element(Ndata)
- Damage(1,1, Ndata),……, Damage(NDim,1, Ndata)
-
:
Damage(1,NIntPts,Ndata),,…., Damage(Nmodes, NIntPts, Ndata)
| OPERAND | DESCRIPTION | DEFAULT |
|---|---|---|
| Object | Object Number | None |
| NDim | Number of (multiple) damage models | |
| Ndata | Number of element/damage pairs | None |
| DefDamage | Default elemental damage value | 0.0 |
| Nnode | Number of node/damage pairs | None |
| DefNodeDamage | Default nodal damage value | |
| NIntPts | Number of integration points per element = 8 Brick = 1 Tetrahedral | None |
| Element(i) | Element number of ith data pair | |
| Node(i) | Node number of ith data pair | |
| Damage(i) | Average damage at ith element | None |
| Damage(i,j) | Damage at ith integration point of jth element | None |
| DamgNode(i) | Damage at ith node None | |
| Damage(k,i) | Kth dimension of damage factor of ith element | |
| Damage(k,n,i) | Kth dimension of damage factor of nth integration point of ith element |
DEFINITION
DAMAGE specifies the damage factor at each element.
REMARKS
The damage factor can be used to predict fracture in cold forming operations. The damage factor increases as a material is deformed. Fracture occurs when the damage factor has reached its critical value. The critical value of the damage factor must be determined through physical experimentation. Damage factor, 
, is defined by | 
|
—|—
The keyword format varies based on damage output selection made at ELMNOD.
For element output (ELMNOD = 0) option, damage at the centroid of each element is written.
For dual output (ELMNOD = 2) option, damage at the centroid of element and damage at node are written.
For integration point (ELMNOD = 3) option, damage values at four integration points in element are written.
Applicable object types: Plastic, Elastoplastic, Porous