MATHF

Bulk Data Entry Defines the material properties in a one-step stamping simulation.

Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATHF MID E NU Y K n EPS0
R0 R45 R90 TABLEID

Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
MATHF 17 21.0E4 0.3 184.297 549.03 0.22 0.007
1.6 1.6 1.6

Definitions

Field Contents SI Unit Example
MID Unique material identification number.

No default (Integer > 0)

E Young's Modulus.

No default (Real)

NU Poisson's ratio.

Default = blank (-1.0 < Real < 0.5 or blank)

Y Yield stress.

No default (Real)

K Strength coefficient.

No default (Real or blank)

n Strain hardening component.

No default (Real or blank)

EPS0 Pre-strain coefficient.

No default (Real or blank)

R0, R45, R90 Lankford coefficients.

No default (Real)

TABLEID Table ID for stress-strain curve using a TABLES1 entry.

No default (Integer > 0)

Comments

  1. This entry is only valid with a @ HyperForm statement in the first line of the input file.
  2. The TABLEID and the corresponding curve are required only when material data is specified with a stress-strain curve. For such case, material parameter such as K, n and EPS0 are extracted from the stress strain curve.