ANSYS APDL 基础
Notes on "ANSYS Mechanical APDL Basic Analysis Guide"
Chater 1 : Getting Started
1.1. Building the Model
Fisrt specify a jobname and analysis title, then use PREP7 preprocessor to define the element types, element real constants, material preperties, and the model geometry.
1.1.1 Specifying a Jobname and Analysis Title
Defining the Jobname : /FILNAME command. when the Key argument is set to 1, ANSYS would start new files.
Defining an Analysis Title : /TITLE command, /STITLE command add subtitles which appear in the output but not in graphic displays
Defining Units : /UNITS command, serves as a record for subsequent reviews of the analysis
1.1.2 Defining Element Types
Must be in PREP7 (use /PREP7) to define element types, use ET command to define the element type by name and give the element a type reference number.
When defining the actual elements, just point to the appropriate type reference number via the TYPE command
Example :
ET, 1, BEAM188
ET, 2, SHELL181
Specify the key options via the KEYOPT command
1.1.3 Creating Cross Sections
when using beams or shells , issue the SECTYPE, SECDATA, etc to define cross sections
when using line and area elements that require geometry data such as cross-sectional area and thickness to be specified as sections, verify via /ESHAPE and EPLOT
1.1.4 Defining Element Real Constans
Specify real constans via the R family of commands (R, RMODIF)
the table of reference number versus real constants set is called the real constant table
To verify the constant inout, issue the RLIST and ELIST commands
RLIST lists all real constants sets
ELIST,,,,,1 shows the real constant labels and their values for each element.
1.1.5 Defining Material Properties
each set of material properties has a material reference number, the table of material reference numbers versus material property sets is called material table
use the MAT command to define the elements
1.1.6 Creating the Model Geometry
1.2 Applying Loads and Obtaining the Solution
