Mechanical APDL Basic Analysis Guide - Ansys

Chapter 2: Loading
The settings you specify with either command or its equivalent GUI paths stay set until they are reuse the
command or path. To reset the default setting (replacement), simply issue the commands or choose the
paths without any arguments.
2.5.8.6. Transferring Body Loads
To transfer body loads that have been applied to the solid model to the corresponding finite element
model, use one of the following:
Command(s): BFTRAN
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Transfer to FE> Body Loads
Main Menu> Solution> Define Loads> Operate> Transfer to FE> Body Loads
To transfer all solid model boundary conditions, use the SBCTRAN command. (See DOF Constraints (p. 27)
for a description of DOF constraints.)
2.5.8.7. Scaling Body Load Values
You can scale existing body load values using these commands:
Command(s): BFSCALE
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Scale FE Loads> Nodal Body Ld
Main Menu> Solution> Define Loads> Operate> Scale FE Loads> Nodal Body Ld
Command(s): BFESCAL
GUI: Main Menu> Preprocessor> Loads> Define Loads> Operate> Scale FE Loads> Elem Body Lds
Main Menu> Solution> Define Loads> Operate> Scale FE Loads> Elem Body Lds
BFCUM and BFSCALE act on the selected set of nodes, whereas BFECUM and BFESCAL act on the selected
set of elements.
2.5.8.8. Resolving Conflicting Body Load Specifications
You need to be aware of the possibility of conflicting BFK, BFL, BFA, and BFV body load specifications and
how the ANSYS program handles them.
BFV, BFA, and BFL specifications transfer to associated volume, area, and line elements, respectively, where
they exist. Where elements do not exist, they transfer to the nodes on the volumes, areas, and lines, including
nodes on the region boundaries. The possibility of conflicting specifications depends upon how BFV, BFA,
BFL and BFK are used as described by the following cases.
CASE A: There are elements for every BFV, BFA, or BFL, and every element belongs to a volume, area or
line having a BFV, BFA, or BFL, respectively.
Every element will have its body loads determined by the corresponding solid body load. Any BFK's present
will have no effect. No conflict is possible.
CASE B: There are elements for every BFV, BFA, or BFL, but some elements do not belong to a volume area
or line having a BFV, BFA, or BFL.
Elements not getting a direct BFE transfer from a BFV, BFA, or BFL are unaffected by them, but will have
their body loads determined by the following: (1 - highest priority) directly defined BFE loads, (2) BFK loads,
(3) directly defined BF loads, or (4) BFUNIF loads. No conflict among solid model body loads is possible.
44
Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information
of ANSYS, Inc. and its subsidiaries and affiliates.