Mechanical APDL Basic Analysis Guide

(Axel Boer) #1

area number overwrite the constraints specified for a lower line number or area number, respectively.
The constraint specification issue order does not matter.


Note

Any conflict detected during solid model constraint transfer produces a warning similar to
the following:

*** WARNING ***
DOF constraint ROTZ from line 8 (1st value=22) is overwriting a D on
node 18 (1st value=0) that was previously transferred from another
DA, DL, or set of DK's.

Changing the value of DK,DL, or DA constraints between solutions may produce many of these
warnings at the 2nd or later solid BC transfer. These can be prevented if you delete the nodal D con-
straints between solutions using DADELE,DLDELE, and/or DDELE.


2.5.6. Forces (Concentrated Loads)


Table 2.3:"Forces" Available in Each Discipline (p. 32) shows a list of forces available in each discipline
and the corresponding labels. Any directions implied by the labels (such as FX, MZ, CSGY, etc.) are in
the nodal coordinate system. (See Coordinate Systems in the Modeling and Meshing Guide for a description
of different coordinate systems.) Table 2.4: Commands for Applying Force Loads (p. 32) lists the commands
to apply, list, and delete forces. Notice that you can apply them at nodes as well as keypoints.


Table 2.3:"Forces" Available in Each Discipline


Discipline Force Label
Structural Forces FX, FY, FZ
Moments MX, MY, MZ
Fluid Mass Flow Rate DVOL
Thermal HEAT, HBOT, HE2,...
HTOP

Heat Flow Rate

Magnetic Current Segments CSGX, CSGY, CSGZ
Magnetic Flux FLUX
Electrical Charge CHRG
Electric Current AMPS
Charge CHRG
Fluid Fluid Flow Rate FLOW
Diffusion Diffusion Flow Rate RATE

Table 2.4: Commands for Applying Force Loads


Location Basic Commands Additional Commands
Nodes F,FLIST,FDELE FSCALE,FCUM
Keypoints FK,FKLIST,FKDELE -
Transfer SBCTRAN FTRAN

Below are examples of some of the GUI paths to use for applying force loads:


Release 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

Loading

Free download pdf