Shear Panel Element Library

This section provides a reference to the shear panel elements available in Abaqus/Standard.

This page discusses:

Element Types

Stress/Displacement Elements

SHEAR4

4-node shear panel element

Active Degrees of Freedom

1, 2, 3

Additional Solution Variables

None.

Nodal Coordinates Required

X, Y, Z

Element Property Definition

Element-Based Loading

Distributed Loads

Distributed loads are specified as described in Distributed Loads.

*dload
  1. Load ID (*DLOAD): BX
  2. FL−3
  3. Body force in the global X-direction.

  1. Load ID (*DLOAD): BY
  2. FL−3
  3. Body force in the global Y-direction.

  1. Load ID (*DLOAD): BZ
  2. FL−3
  3. Body force in the global Z-direction.

  1. Load ID (*DLOAD): BXNU
  2. FL−3
  3. Nonuniform body force in the global X-direction with magnitude supplied via user subroutine DLOAD.

  1. Load ID (*DLOAD): BYNU
  2. FL−3
  3. Nonuniform body force in the global Y-direction with magnitude supplied via user subroutine DLOAD.

  1. Load ID (*DLOAD): BZNU
  2. FL−3
  3. Nonuniform body force in the global Z-direction with magnitude supplied via user subroutine DLOAD.

  1. Load ID (*DLOAD): CENT
  2. FL−4 (ML−3T−2)
  3. Centrifugal load (magnitude is input as ρω2, where ρ is the mass density per unit volume, ω is the angular velocity).

  1. Load ID (*DLOAD): CENTRIF
  2. T−2
  3. Centrifugal load (magnitude is input as ω2, where ω is the angular velocity).

  1. Load ID (*DLOAD): CORIO
  2. FL−4T (ML−3T−1)
  3. Coriolis force (magnitude is input as ρω, where ρ is the mass density per unit volume, ω is the angular velocity). The load stiffness due to Coriolis loading is not accounted for in direct steady-state dynamic analysis.

  1. Load ID (*DLOAD): GRAV
  2. LT−2
  3. Gravity loading in a specified direction (magnitude is input as acceleration).

  1. Load ID (*DLOAD): HP
  2. FL−2
  3. Hydrostatic pressure applied to the element reference surface and linear in global Z. The pressure is positive in the direction of the positive element normal.

  1. Load ID (*DLOAD): P
  2. FL−2
  3. Pressure applied to the element reference surface. The pressure is positive in the direction of the positive element normal.

  1. Load ID (*DLOAD): PNU
  2. FL−2
  3. Nonuniform pressure applied to the element reference surface with magnitude supplied via user subroutine DLOAD. The pressure is positive in the direction of the positive element normal.

  1. Load ID (*DLOAD): ROTA
  2. T−2
  3. Rotary acceleration load (magnitude is input as α, where α is the rotary acceleration).

  1. Load ID (*DLOAD): ROTDYNF
  2. T−1
  3. Rotordynamic load (magnitude is input as ω, where ω is the angular velocity).

  1. Load ID (*DLOAD): TRSHR
  2. FL−2
  3. Shear traction on the element reference surface.

  1. Load ID (*DLOAD): TRSHRNU
  2. FL−2
  3. Nonuniform shear traction on the element reference surface with magnitude and direction supplied via user subroutine UTRACLOAD.

  1. Load ID (*DLOAD): TRVEC
  2. FL−2
  3. General traction on the element reference surface.

  1. Load ID (*DLOAD): TRVECNU
  2. FL−2
  3. Nonuniform general traction on the element reference surface with magnitude and direction supplied via user subroutine UTRACLOAD.

Surface-Based Loading

Distributed Loads

Surface-based distributed loads are specified as described in Distributed Loads.

*dsload
  1. Load ID (*DSLOAD): HP
  2. FL−2
  3. Hydrostatic pressure on the element reference surface and linear in global Z. The pressure is positive in the direction opposite to the surface normal.

  1. Load ID (*DSLOAD): P
  2. FL−2
  3. Pressure on the element reference surface. The pressure is positive in the direction opposite to the surface normal.

  1. Load ID (*DSLOAD): PNU
  2. FL−2
  3. Nonuniform pressure on the element reference surface with magnitude supplied via user subroutine DLOAD. The pressure is positive in the direction opposite to the surface normal.

  1. Load ID (*DSLOAD): TRSHR
  2. FL−2
  3. Shear traction on the element reference surface.

  1. Load ID (*DSLOAD): TRSHRNU
  2. FL−2
  3. Nonuniform shear traction on the element reference surface with magnitude and direction supplied via user subroutine UTRACLOAD.

  1. Load ID (*DSLOAD): TRVEC
  2. FL−2
  3. General traction on the element reference surface.

  1. Load ID (*DSLOAD): TRVECNU
  2. FL−2
  3. Nonuniform general traction on the element reference surface with magnitude and direction supplied via user subroutine UTRACLOAD.

Element Output

Equivalent shear flow is available for elements with displacement degrees of freedom.

SQEQ
Equivalent shear flow.

Node Ordering on Elements



 

Numbering of Integration Points for Output