.cntf file
An OptiStruct ASCII format results file.
File Creation
This file is created when the OPTI format is selected in the CONTF I/O Options Entry for Linear Static, Linear Inertia Relief, and Nonlinear Static Analysis (NLSTAT) runs.
File Contents
| Result | Description |
|---|---|
| Contact Forces | Contact force results from
small displacement nonlinear analysis (with contact) runs. Output is controlled by the I/O Option CONTF. |
File Format
The .cntf file has the following format:
| For each iteration, the following header is used. | ||||||||
| iter | Iteration | Numel | ||||||
- Data
- Description
- iter
- Keyword identifying that the next field is the iteration number.
- Iteration
- Iteration number.
- Numel
- Total number of nonlinear quasi-static subcases (with contact) in the entire model.
Within the iteration section, the following information is provided for each
subcase:
| SUBCASE:
<Subcase ID> <Number of Contact Interfaces> LOAD: <Load ID> LABEL: <Label> CONTACT INTERFACE: TOTAL FORCE ACTING ON MAIN SURFACE (BASIC SYSTEM) |
||||||||
| CONTACT# | FORCE-X | FORCE-Y | FORCE-Z | MAGNITUDE | ||||
- Data
- Description
- CONTACT#
- The Contact Interface identification number (CTID on the CONTACT Bulk Data Entry).
- FORCE-X
- The component of the total contact force along the X-axis of the Basic System.
- FORCE-Y
- The component of the total contact force along the Y-axis of the Basic System.
- FORCE-Z
- The component of the total contact force along the Z-axis of the Basic System.
- MAGNITUDE
- The magnitude of the total contact force acting on the Main Surface.