Cylindrical Surface Element Library

Distributed loads are specified as described in Distributed Loads. Gravity, centrifugal, rotary acceleration, and Coriolis force loads apply only if the surface elements have rebar defined or if the elements have a defined density.

*dload

1. Load ID (*DLOAD): BX
2. FL⁻³

3. Body force in the global X-direction.

1. Load ID (*DLOAD): BY
2. FL⁻²

3. Body force in the global Y-direction.

1. Load ID (*DLOAD): BZ
2. FL⁻²

3. Body force in the global Z-direction.

1. Load ID (*DLOAD): BXNU
2. FL⁻²

3. Nonuniform body force in the global X-direction with magnitude supplied via user subroutine DLOAD.

1. Load ID (*DLOAD): BYNU
2. FL⁻²

3. Nonuniform body force in the global Y-direction with magnitude supplied via user subroutine DLOAD.

1. Load ID (*DLOAD): BZNU
2. FL⁻²

3. Nonuniform body force in the global Z-direction with magnitude supplied via user subroutine DLOAD.

1. Load ID (*DLOAD): CENT
2. FL⁻³(ML⁻² T⁻²)

3. Centrifugal load (magnitude is input as $\rho {\omega }^2$, where $\rho$ is the mass density per unit area, $\omega$ is the angular speed).

1. Load ID (*DLOAD): CENTRIF
2. T⁻²

3. Centrifugal load (magnitude is input as ${\omega }^2$, where $\omega$ is the angular speed).

1. Load ID (*DLOAD): CORIO
2. FL⁻³T (ML⁻² T⁻¹)

3. Coriolis force (magnitude is input as $\rho \omega$, where $\rho$ is the mass density per unit area, $\omega$ is the angular speed). The load stiffness due to Coriolis loading is not accounted for in direct steady-state dynamics 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.

1. Load ID (*DLOAD): ROTA
2. T⁻²

3. Rotary acceleration load (magnitude is input as $\alpha$, where $\alpha$ is the rotary acceleration).

1. Load ID (*DLOAD): TRSHR
2. FL⁻²

3. Shear traction on the element reference surface.

1. Load ID (*DLOAD): TRSHRNU ^(S)
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 ^(S)
2. FL⁻²

3. Nonuniform general traction on the element reference surface with magnitude and direction supplied via user subroutine UTRACLOAD.