Subsections

• Material Type 1 : Elastic
• Material Type 2 : Orthotropic Elastic
• Material Type 3 : Kinematic/Isotropic Plasticity
• Material Type 4 : Thermo-Elastic-Plastic
• Material Type 12 : Isotropic Elastic-Plastic
• Material Type 13 : Isotropic Elastoplastic with Failure
• Material Type 20 : Rigid
• Material Type 24 : Piecewise Linear Isotropic Plasticity
• Material Type 28 : Resultant Plasticity
• Material Type 29 : Force Limited Resultant Plasticity

Internal Material Types

The following tables illustrate the material types provided by the interface program. All materials are defined using the command 'PROPERTY MATERIAL type' with a number of additional arguments in which the material data is defined. The first two values for all material data types are the density and the element type code (0 for solids, 1 for beams, 2 for shells, 3 for thick shells) for which the material is to be used. The meaning and number of the following arguments depend upon the material type.

The last three property records contain the actual element properties, defined with the FEMGEN command PROPERTY PHYSICAL, for beam, shell and thick shell elements.

Material Type 1 : Elastic

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's Modulus

4 Poisson's Ratio

5 Axial Damping for Belytschko-Schwer beam (optional)

6 Bending Damping for Belytschko-Schwer beam (optional)

Example FEMGEN Command:

PROPERTY MATERIAL TYPE1 MAT1 1 2 3 4 5 6

Corresponding DYNA3D Input File:

C1     1    10.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT1                                                            
C3 0.3000E+010.5000E+010.6000E+01                                                  
C4 0.4000E+01                                                                      
C5                                                                                 
C6                                                                                 
C7                                                                                 
C8

Material Type 2 : Orthotropic Elastic

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3-5 Young's Modului E_a ,E_b ,E_c

$$\nu_{ba} \nu_{ca} \nu_{cb}$$ 6-8

9-11 Shear Moduli G_ab ,G_bc ,G_ca

12 Material Axes Option (0,1,2,3)

13-15 Material Axes Depending upon Axes Option used.

16-18 Material Axes Depending upon Axes Option used.

Example FEMGEN Command:

PROPERTY MATERIAL TYPE2 MAT2 1, 2, ... , 18

Corresponding DYNA3D Input File:

C1     2    20.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT2                                                            
C3 0.3000E+010.4000E+010.5000E+01                                                  
C4 0.6000E+010.7000E+010.8000E+01                                                  
C5 0.9000E+010.1000E+020.1100E+02                                                  
C6 0.2000E+01                                                                      
C7 0.1300E+020.1400E+020.1500E+02                                                  
C8 0.1600E+020.1700E+020.1800E+02

Material Type 3 : Kinematic/Isotropic Plasticity

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's Modulus

4 Poisson's Ratio

5 Yield Stress

6 Tangent Modulus E_t

$$\beta$$ 7

8 Strain Rate Parameter, C (optional)

9 Strain Rate Parameter, P (optional)

Example FEMGEN Command:

PROPERTY MATERIAL TYPE3 MAT3 1 2 3 4 5 6 7 8 9

Corresponding DYNA3D Input File:

C1     3    30.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT3                                                            
C3 0.3000E+010.8000E+010.9000E+01                                                  
C4 0.4000E+01                                                                      
C5 0.5000E+01                                                                      
C6 0.6000E+01                                                                      
C7 0.7000E+01                                                                      
C8

Material Type 4 : Thermo-Elastic-Plastic

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Temperature T₁

4 Young's modulus E₁ at T₁

$$\nu_{1}$$ 5

$$\alpha_{1}$$ 6

$$\sigma_{y1}$$ 7

8 Plastic Hardening Modulus E^p₁ at T₁

9-14 As 3-8 for temperature T₂ (optional)

15-20 As 3-8 for temperature T₃ (optional)

21-26 As 3-8 for temperature T₄ (optional)

27-32 As 3-8 for temperature T₅ (optional)

33-38 As 3-8 for temperature T₆ (optional)

39-44 As 3-8 for temperature T₇ (optional)

45-50 As 3-8 for temperature T₈ (optional)

Example FEMGEN Command:

PROPERTY MATERIAL TYPE4 MAT4 1, 2, ... , 50

Corresponding DYNA3D Input File:

C1     4    40.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT4                                                            
C3 0.3000E+010.9000E+010.1500E+020.2100E+020.2700E+020.3300E+020.3900E+020.4500E+02
C4 0.4000E+010.1000E+020.1600E+020.2200E+020.2800E+020.3400E+020.4000E+020.4600E+02
C5 0.5000E+010.1100E+020.1700E+020.2300E+020.2900E+020.3500E+020.4100E+020.4700E+02
C6 0.6000E+010.1200E+020.1800E+020.2400E+020.3000E+020.3600E+020.4200E+020.4800E+02
C7 0.7000E+010.1300E+020.1900E+020.2500E+020.3100E+020.3700E+020.4300E+020.4900E+02
C8 0.8000E+010.1400E+020.2000E+020.2600E+020.3200E+020.3800E+020.4400E+020.5000E+02

Material Type 12 : Isotropic Elastic-Plastic

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's Modulus

4 Yield Stress

5 Tangent Modulus

6 Bulk Modulus

Example FEMGEN Command:

PROPERTY MATERIAL TYPE12 MAT12 1 2 3 4 5 6

Corresponding DYNA3D Input File:

C1     5   120.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT12                                                           
C3 0.3000E+010.4000E+010.5000E+01                                                  
C4 0.6000E+01                                                                      
C5                                                                                 
C6                                                                                 
C7                                                                                 
C8

Material Type 13 : Isotropic Elastoplastic with Failure

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Shear Modulus

4 Yield Stress

5 Tangent Modulus

6 Plastic Failure Strain

7 Failure pressure

8 Bulk Modulus

Example FEMGEN Command:

PROPERTY MATERIAL TYPE13 MAT13 1 2 3 4 5 6 7 8

Corresponding DYNA3D Input File:

C1     6   130.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT13                                                           
C3 0.3000E+010.4000E+010.5000E+010.6000E+010.7000E+01                              
C4 0.8000E+01                                                                      
C5                                                                                 
C6                                                                                 
C7                                                                                 
C8

Material Type 20 : Rigid

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's Modulus

4 Poisson's Ratio

5 Constraint Flag CMO (0,1,-1)

6 Constraint Type (CMO=1), Coordinate System (CMO=-1)

7 Constraint Type (CMO=1), Restraint Number (0 to 111111) (CMO=-1)

Example FEMGEN Command:

PROPERTY MATERIAL TYPE20 MAT20 1 2 3 4 5 6 7

Corresponding DYNA3D Input File:

C1     7   200.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT20                                                           
C3 0.3000E+01                                                                      
C4 0.4000E+01                                                                      
C5 0.5000E+01                                                                      
C6 0.6000E+01                                                                      
C7 0.7000E+01                                                                      
C8

Material Type 24 : Piecewise Linear Isotropic Plasticity

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's modulus

4 Poisson's Ratio

5 Yield Stress

6 Tangent Modulus

7 Plastic Strain at Failure

8 Time Step Size

9 Load Curve Number

10-11 Plastic Strain₁ , Yield Stress₁

12-13 Plastic Strain₂ , Yield Stress₂

14-15 Plastic Strain₃ , Yield Stress₃

16-17 Plastic Strain₄ , Yield Stress₄

18-19 Plastic Strain₅ , Yield Stress₅

20-21 Plastic Strain₆ , Yield Stress₆

22-23 Plastic Strain₇ , Yield Stress₇

24-25 Plastic Strain₈ , Yield Stress₈

Example FEMGEN Command:

PROPERTY MATERIAL TYPE24 MAT24 1, 2, ... , 25

Corresponding DYNA3D Input File:

C1     8   240.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT24                                                           
C3 0.3000E+01                                                                      
C4 0.4000E+01                                                                      
C5 0.5000E+01                                                                      
C6 0.6000E+010.7000E+010.8000E+010.9000E+01                                        
C7 0.1000E+020.1200E+020.1400E+020.1600E+020.1800E+020.2000E+020.2200E+020.2400E+02
C8 0.1100E+020.1300E+020.1500E+020.1700E+020.1900E+020.2100E+020.2300E+020.2500E+02

Material Type 28 : Resultant Plasticity

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's Modulus

4 Poisson's Ratio

5 Yield Stress

6 Hardening Modulus E_t

Example FEMGEN Command:

PROPERTY MATERIAL TYPE28 MAT28 1 2 3 4 5 6

Corresponding DYNA3D Input File:

C1     9   280.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT28                                                           
C3 0.3000E+01                                                                      
C4 0.4000E+01                                                                      
C5 0.5000E+01                                                                      
C6 0.6000E+01                                                                      
C7                                                                                 
C8

Material Type 29 : Force Limited Resultant Plasticity

Argument(s) Meaning

1 Density

2 Element Type Code (0 solid,1 beam,2 shell,3 thick shell)

3 Young's modulus

4 Poisson's Ratio

5 Damping Factor

6-13 End Moment for 1st-8th Force vs Strain Curves

14-21 Loadcurve for 1st-8th Load vs Strain Curves

22 Loadcurve for Plastic Moment vs Y-Rotation at node 1

23 Scale Factor for Plastic Moment at node 1

24 Loadcurve for Plastic Moment vs Y-Rotation at node 2

25 Scale Factor for Plastic Moment at node 2

26 Loadcurve for Plastic Moment vs Z-Rotation at node 1

27 Scale Factor for Plastic Moment at node 1

28 Loadcurve for Plastic Moment vs Z-Rotation at node 2

29 Scale Factor for Plastic Moment at node 2

Example FEMGEN Command:

PROPERTY MATERIAL TYPE29 MAT29 1, 2, ... , 29

Corresponding DYNA3D Input File:

C1    10   290.1000E+01                                                 2          
C2 FEMGEN MATERIAL:MAT29                                                           
C3 0.3000E+010.4000E+01          0.5000E+01                                        
C4 0.6000E+010.7000E+010.8000E+010.9000E+010.1000E+020.1100E+020.1200E+020.1300E+02
C5 0.1400E+020.1500E+020.1600E+020.1700E+020.1800E+020.1900E+020.2000E+020.2100E+02
C6                                                                                 
C7 0.2200E+020.2300E+020.2400E+020.2500E+02                                        
C8 0.2600E+020.2700E+020.2800E+020.2900E+02