/MAT/PLAS_PREDEF

Block Format Keyword This material law has predefined elasto-plastic data for some common steel, aluminum, and plastic materials.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
/MAT/PLAS_PREDEF/mat_ID
mat_title
Material name                

Definition

Field Contents SI Unit Example
mat_ID Material identifier.

(Integer, maximum 10 digits)

 
mat_title Material title.

(Character, maximum 100 characters)

 
Material name Predefined material name. 3
STEEL
Mild steel
HSS
High strength steel
UHSS
Ultra-high strength steel
AA5182
Aluminum AA5182
AA6082-T6
Aluminum AA6082-T6
PA6GF30
Plastic PA6GF30
PPT40
Plastic PP T40

(Character, must be left-justified when entered)

 

Example (Steel)

#RADIOSS STARTER
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#-  2. MATERIALS:
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
/MAT/PLAS_PREDEF/1
Material for generic mild steel
#
STEEL
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|
#ENDDATA
/END
#---1----|----2----|----3----|----4----|----5----|----6----|----7----|----8----|----9----|---10----|

Comments

  1. This material provides elasto-plastic material data that can be used early in a design when material data might not be available. The data is from the results of several publicly funded projects. The material model defines stress as a function of strain. No strain rate or temperature effects are included. Failure can be modeled by using the same predefined materials in /FAIL/BIQUAD.
  2. The material data is automatically converted into the model’s unit system defined in /BEGIN.
  3. This material uses /MAT/LAW2 (PLAS_JOHNS), Iflag=1 with these predefined values in the units, kg, mm, and ms.
    Name Material Description Density E ν MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqyVd4gaaa@37AE@ Yield Stress UTS ε U T S MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqyTdu2aaS baaSqaaiaadwfacaWGubGaam4uaaqabaaaaa@3A54@
    STEEL Mild steel 7.8E-6 210 0.3 0.160 0.380 0.24
    HSS HSS steel 7.8E-6 210 0.3 0.300 0.510 0.23
    UHSS UHSS steel 7.8E-6 210 0.3 0.500 1.500 0.045
    AA5182 Aluminum AA5182 2.7E-6 70 0.33 0.150 0.300 0.25
    AA6082-T6 Aluminum AA6082-T6 2.7E-6 70 0.33 0.300 0.360 0.08
    PA6GF30 Plastic PA6GF30 1.3E-6 7 0.35 0.050 0.100 0.02
    PPT40 Plastic PP T40 1.2E-6 4 0.3 0.020 0.030 0.06
Where,
E
Young's modulus
ν MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqyVd4gaaa@37AE@
Poisson's ratio
Yield Stress
Material yield stress
UTS
Ultimate Tensile Stress (engineering stress)
ε U T S MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeqyTdu2aaS baaSqaaiaadwfacaWGubGaam4uaaqabaaaaa@3A54@
Engineering strain at UTS
Note: Altair does not assume any responsibility for the validity, accuracy or any results obtained from these values. The user must verify his own values by test results. Usage is only recommended for early design exploration.