The General page enables the user to define information such as Title,
Working coordinate system, Acceleration time, and Thermal analysis for the current
stage. A typical General page is illustrated in Figure 8.3.14.
Figure 8.3.14 A typical General page
TITLE
This function allows the user to key in the title for each forming stage.
For multiple stage stamping analysis, the user can specify different titles for
each stage.
WORKING COORDINATE SYSTEM
This function allows the user to set the working coordinate system for
each stage. Sheet Forming supports arbitrary stamping direction. Default
working coordinate system is set as Global Z direction. The user may choose a C.S.
from the list of coordinate system as Working Coordinate System of the current
stage, or click on the Select button to select from the display screen. If
local stamping direction is needed, the user can click the New button to define
LCS for the current stage. The local W direction is chosen as the stamping
direction. The newly created LCS will be automatically set as the working C.S. of
the current stage. Refer to Section 2.5 for a description about creating LCS.
TOOL ACCELERATION TIME
This function allows the user to set the acceleration time for tool
motion curve. During defining motion curve in LS-DYNA, the user should provide
an acceleration time to ensure the stability of calculation when the velocity
increases from 0 to maximum. The default acceleration time is 0.001(s), as
illustrated in Figure 8.3.15.
Figure
8.3.15 Set acceleration time
THERMAL ANALYSIS
If the user selects the Coupled Thermal Structural Analysis, the
program will add a Thermal page after the Tools page. All the parameters for
thermal forming will be set in the Thermal page. Refer to Section 8.3.8.1 for a detailed description about
the setup of thermal forming.