PBEAM

Defines the properties of a PBEAM element.

Format

1	2	3	4	5	6	7	8	9	10
PBEAM	PID	MID	A	I1	I2	I12	J	NSM
	C1	C2	D1	D2	E1	E2	F1	F2
	K1	K2

Fields

Field	Contents	Default Value
PID	Property identification number. (Integer > 0)	Required
MID	Material identification number. (Integer > 0)	Required
A	Area of the beam cross section. (Real > 0.0)	Required
I1	Area moment of inertia for bending in plane 1 about the neutral axis. (Real > 0.0)	Required
I2	Area moment of inertia for bending in plane 2 about the neutral axis. (Real > 0.0)	Required
I12	Area product of inertia. Must be 0.0 or blank.	0.0
J	Torsional stiffness parameter. (Real)	Required
NSM	Nonstructural mass per unit length. (Real)	0.0
Ci, Di, Ei, Fi	The y and z locations (i = 1 corresponds to y and i = 2 corresponds to z) in element coordinates relative to the shear center (see the diagram following the remarks) for stress data recovery. (Real)	y = z = 0.0
K1, K2	Shear stiffness factor K in KAG for plane 1 and plane 2. See Remark 2. (Real)	1.0, 1.0

Remarks

1. The following figure describes the PBEAM element coordinate system.

where:

1. The orientation vector v is defined by CBEAM entry fields X1, X2, and X3.
2. The shear stiffness factors K1 and K2 adjust the effective transverse shear cross-section area according to the Timoshenko beam theory. The values of K1 and K2 can be set to 0.0 for Euler-Bernoulli beam theory.