Material Properties Data Records

  A Material Properties Data Set is denoted by a `KEY' of 20 in the data set header record. Isotropic or anisotropic material properties may be defined and data may be given for Factor of Safety calculations. For all types there is a header of the form:

KEY, TYPE, NSC, NLC, ID, YMOD, PRATIO, THERMAL, DENSITY

To be written with the format:

FORMAT(1X, 4I2, I5, 4E12.5)

Where:

KEY = -1 for a data header record

= -3 for the data set delimiter record which is an otherwise blank record inserted at the end of the data set.

TYPE = 1 for Isotropic materials

= 2 for Anisotropic materials

= 3 for Factor of Safety data

NSC = number of stress/strain matric coefficients contained in the data continuation records (Anisotropic materials only).

= number of Temperature / Fatigue Strength value pairs contained in the data continuation records (Factor of Safety data only).

NLC = number of linear coefficients of expansion contained in the data continuation records (Anisotropic materials only).

= number of Temperature / Ultimate Tensile Strength values pairs contained in the data continuation records (Factor of Safety data only).

ID = material type identification number.

YMOD = Young's Modulus

PRATIO = Poisson's Ratio

THERMAL = linear coefficient of expansion

DENSITY = density

And then for anisotropic materials only:

KEY, COEFFICIENTS

or for Factor of Safety data:

KEY, TEMP, FATIGUE, TEMP, FATIGUE, ........

KEY, ........., TEMP, TENSILE, TEMP, TENSILE

To be written with the format:

FORMAT(1X, I2, 6E12.5)

Where:

KEY = -2 for a data continuation record

COEFFICIENTS = up to 6 coefficients per continuation record

TEMP = Temperature value

FATIGUE / TENSILE = corresponding value of Fatigue Strength or Ultimate Tensile Strength.

Notes:

1.

Data continuation records should be repeated until all coefficients or temperature/strength values have been specified.

2.

Stress/strain matrix coefficients should precede linear coefficients of expansion.

3.

Temperature / Fatigue strength value pairs should precede Temperature / Ultimate Tensile Strength value pairs.