# PROD

Bulk Data Entry Defines the properties of a rod, which is referenced by the CROD entry.

## Format

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
PROD PID MID A J C NSM

## Example

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
PROD 17 23 42.6     0.5

## Description

Field Contents SI Unit Example
PID Unique simple beam property identification.
Integer
Specifies an identification number for this property.
<String>
Specifies a user-defined string label for this property. 2

No default (Integer > 0 or <String>)

MID Material identification. 1 2
Integer
Specifies a material identification number.
<String>
Specifies a user-defined material identification string.

No default (Integer > 0 or <String>)

A Area of rod.

No default (Real)

J Torsional constant.

No default (Real)

C Coefficient to determine torsional stress.

Default = 0.0 (Real)

NSM Nonstructural mass per unit length.

No default (Real)

1. For structural problems, MID may reference only a MAT1 material entry.
2. String based labels allow for easier visual identification of properties, including when being referenced by other cards. (For example, the PID field of elements). For more details, refer to String Label Based Input File in the Bulk Data Input File.
3. In case of plasticity problems, MATS1 can be referenced with the same ID as MAT1 in small displacement and large displacement nonlinear analysis. The plasticity behavior is considered only in the axial direction, and the torsional behavior remains elastic.
4. For heat transfer problems, MID may reference only a MAT4 material entry.
5. Torsional stress is calculated as:(1)
$\tau =\frac{C{M}_{\theta }}{J}$
Where,
Mθ
Torsional moment
C
Coefficient specified in field C
J
Torsional constant specified in field J
6. This card is represented as a property in HyperMesh.