The material is a braided carbon fiber composite. The following table provides the material properties of each layer:
| UD Braid and Overlaminate: Linear Elastic Material 1 | |
|
Young's Modulus in X direction (GPa) |
160 |
|
Young's Modulus in Y direction (GPa) |
9.7 |
|
Young's Modulus in Z direction (GPa) |
9.7 |
|
Poisson's Ratio (PRXY) |
0.33 |
|
Poisson's Ratio (PRYZ) |
0.28 |
|
Poisson's Ratio (PRXZ) |
0.33 |
|
Shear Modulus GXY (GPa) |
5.9 |
|
Shear Modulus GYZ (GPa) |
4.7 |
|
Shear Modulus GXZ (GPa) |
5.9 |
|
Deltoid: Linear Elastic Material 2 | |
|
Young's Modulus in X direction (GPa) |
9.7 |
|
Young's Modulus in Y direction (GPa) |
152 |
|
Young's Modulus in Z direction (GPa) |
9.7 |
|
Poisson's Ratio (PRXY) |
0.021 |
|
Poisson's Ratio (PRYZ) |
0.33 |
|
Poisson's Ratio (PRXZ) |
0.28 |
|
Shear Modulus GXY (GPa) |
5.9 |
|
Shear Modulus GYZ (GPa) |
5.9 |
|
Shear Modulus GXZ (GPa) |
4.7 |
|
Panel Braids: Linear Elastic Material 3 | |
|
Young's Modulus in X direction (GPa) |
65.8 |
|
Young's Modulus in Y direction (GPa) |
46.1 |
|
Young's Modulus in Z direction (GPa) |
9.7 |
|
Poisson's Ratio (PRXY) |
0.421 |
|
Poisson's Ratio (PRYZ) |
0.48 |
|
Poisson's Ratio (PRXZ) |
0.28 |
|
Shear Modulus GXY (GPa) |
25.8 |
|
Shear Modulus GYZ (GPa) |
4.7 |
|
Shear Modulus GXZ (GPa) |
4.7 |
For VCCT-based crack-growth simulation, isotropic, orthotropic or anisotropic materials can be used with several fracture criteria (including a user-defined option). Multiple cracks are also allowed.
For this simulation, a linear fracture criterion is defined for crack onset and subsequent crack-growth. The linear option assumes that the fracture criterion is a linear function of the Mode I (GI), Mode II (GII), and Mode III (GIII) energy-release rates, expressed as:
|
Critical Energy-Release Rate | |
|---|---|
|
Critical Mode I energy-release rate,
|
0.3 |
|
Critical Mode II energy-release rate,
|
1.0 |
|
Critical Mode III energy-release rate,
|
1.0 |
Example 36.1: Defining the Fracture Criterion
C1=0.3 C2=1.0 C3=1.0 TB,CGCR,6,,3,LINEAR ! Linear fracture criterion TBDATA,1,C1,C2,C3 TB,CGCR,7,,3,LINEAR ! Linear fracture criterion TBDATA,1,C1,C2,C3