The .cntf file is an OptiStruct ASCII format results file.
This file is created when the OPTI format is selected in the CONTF I/O Options entry for Small Displacement Nonlinear 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: |
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iter |
Iteration |
Numel |
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where: |
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iter |
is a keyword identifying that the next field is the iteration number. |
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Iteration |
is the Iteration number. |
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Numel |
is the total number of nonlinear quasi-static subcases (with contact) in the entire model. |
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Within the iteration section, the following information is provided for each subcase: |
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SUBCASE: <Subcase ID> <Number of Contact Interfaces> LOAD: <Load ID> LABEL: <Label> CONTACT INTERFACE: TOTAL FORCE ACTING ON MASTER SURFACE (BASIC SYSTEM) |
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CONTACT# |
FORCE-X |
FORCE-Y |
FORCE-Z |
MAGNITUDE |
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where: |
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CONTACT# |
is the Contact Interface identification number (CTID on the CONTACT Bulk Data Entry). |
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FORCE-X |
is the component of the total contact force along the X-axis of the Basic System. |
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FORCE-Y |
is the component of the total contact force along the Y-axis of the Basic System. |
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FORCE-Z |
is the component of the total contact force along the Z-axis of the Basic System. |
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MAGNITUDE |
is the magnitude of the total contact force acting on the Master Surface. |