Create FEMDATA

Ribbon menu Elements Tab Data Elements container Create a FEMDATA
or
(Classic) Build Data Elements FEMdata New/Modify
 
Produces data files of monitor points, component loads, deformations, stresses, or strains for input to subsequent finite element or fatigue life analysis for use in third-party products. You use the Settings Solver Output More Durability Files to specify the type of file to produce (for more information, see Solver Settings - Output dialog box help and the Adams Durability online help). Adams View will not output to any files unless you specify the format. For more information, see About Setting Simulation Controls.
 
For the option:
Do the following:
Name
Enter the name of the FEMDATA element in the Modeling database to create or modify.
Type
Select the information that you want output:
Loads on Rigid Body/Flex Body - Outputs all external forces (reaction and applied forces except gravity) acting on the specified body and, optionally, inertial forces of the specified body (angular velocity and acceleration, including effects of gravity) as a function of time. Load data will be output in the simulation set of units.
Modal Deformation - Outputs modal deformations as a function of time of the specified flexible body. Adams View will only export coordinates of the active modes in the simulation.
Nodal Deformation - Outputs nodal deformations as a function of time of the specified flexible. Adams View writes the deformations in the simulation set of units.
Strain - Outputs strain information if strain modes are available in the Modal Neutral File (MNF) of the specified flexible body and an Adams Durability license is available. Adams Durability outputs all six components of strain (normal-X, normal-Y, normal-Z, shear-XY, shear-YZ, shear-ZX). It outputs strains in the basic FEA coordinate system of the flexible body except where specified below.
Stress - Outputs stress information if modal stresses are available in the MNF of the flexible body and an Adams Durability license is available. Adams Durability outputs all six components of stress (normal-X, normal-Y, normal-Z, shear-XY, shear-YZ, shear-ZX). It outputs stresses in the simulation set of units in the basic FEA coordinate system of the flexible body except where specified below.
Strain on FE Part - Outputs strain information of the specified FE Part when an Adams Durability license is available. Adams Durability outputs all six components of strain (normal-X, normal-Y, normal-Z, shear-XY, shear-YZ, shear-ZX) even though some of these components may be zero by definition of the nonlinear FE Part beam formulation. It outputs strains in the body coordinate system of the FE Part except where specified below.
Stress on FE Part - Outputs stress information of the specified FE Part when an Adams Durability license is available. Adams Durability outputs all six components of stress (normal-X, normal-Y, normal-Z, shear-XY, shear-YZ, shear-ZX) even though some of these components may be zero by definition of the nonlinear FE Part beam formulation. It outputs stress in the body coordinate system of the FE Part except where specified below.
Monitor Points - Output monitor point information if monitor point data are available in the MNF of the flexible body.
Inertia
Check Inertia if you want Adams View to include inertial loads (linear acceleration, angular acceleration, and velocity) when outputting the loads acting on the body. Otherwise, Adams View outputs no inertial loads and you will need to rely on an inertia relief capability in the finite element program to balance the external loads with the internal loads.
If you selected Loads on Rigid Body, the following options appear:
R Marker
Enter the rigid body marker to be the reference coordinate system to output loads. Because Adams Solver resolves all loads acting on the rigid body in the coordinate system of the specified marker, the marker should represent the FEA basic coordinate system of the part's finite element (FE) model.
Peak Slice
Select that FE model load data are to be output only at those time steps where the specified peak load occurred in the simulation. When you set the Time options, Adams View only checks the time steps within those specifications for the peak load. You can specify one or more of FX, FY, FZ, FMAG, GMAG, TX, TY, TZ, and TMAG.
If you selected Loads on Flexible Body, the following options appear:
Inertia
Check Inertia if you want Adams View to include inertial loads (linear acceleration, angular acceleration, and velocity) when outputting the loads acting on the body. Otherwise, Adams View outputs no inertial loads and you will need to rely on an inertia relief capability in the finite element program to balance the external loads with the internal loads.
Flex Body
Enter the flexible body whose data Adams View outputs. Adams View outputs the data in the FE model basic coordinate system that is inherent to the flexible body.
Peak Slice
Select that FE model load data are to be output only at those time steps where the specified peak load occurred in the simulation. When you set the Time options, Adams View only checks the time steps within those specifications for the peak load. You can specify one or more of FX, FY, FZ, FMAG, GMAG, TX, TY, TZ, and TMAG.
If you selected Modal Deformation, the following option appears:
Flex Body
Enter the flexible body whose data Adams View outputs. Adams View outputs the data in the FE model basic coordinate system that is inherent to the flexible body.
If you selected Nodal Deformation, the following option appears:
Flex Body
Enter the flexible body whose data Adams View outputs. Adams View outputs the data in the FE model basic coordinate system that is inherent to the flexible body.
Nodes
Enter the node numbers of a flexible body whose data is to be output. If you do not specify a node list, Adams View exports nodal data at each attachment point of the flexible body. Adams Solver issues a warning if a node ID is specified that does not belong to the flexible body.
Datum
Enter a node ID of the flexible body to be the datum of the nodal displacements. Adams Solver computes all nodal displacements relative to this node ID. If you do not specify a datum node, Adams Solver generates an arbitrary relative set of nodal displacements. It displays a warning message if the specified node does not belong to the flexible body.
If you selected Stress or Strain, the following options appear:
Flex Body
Enter the flexible body whose data Adams View outputs. Adams Durability outputs the data in the FE model basic coordinate system that is inherent to the flexible body.
On Nodes/Hot Spots
Lets you select either output on nodes or Hotspots. The options in the dialog box change depending on the selection, as explained in the next rows of the table. For an example of defining hot spots, see the FEMDATA statement and near the end of it, the Definition of Hotspots.
If you selected On Nodes, the following options appear:
Nodes
Enter the node numbers of a flexible body whose data is to be output. If you do not specify a node list, Adams View exports nodal data at each attachment point of the flexible body. Adams Solver issues a warning if a node id is specified that does not belong to the flexible body.
R Marker
Enter a coordinate reference marker in the model that will be used to transform the stress or strain data. If not specified, the stress or strain will be output in the basic FEA coordinate system of the flexible body (LPRF). This option can be useful when correlating strain gauge data from a physical test. If the orientation of the strain gauge does not match the FEA coordinate system, you can reference a marker whose orientation does match.
If you selected Hot Spots, the following options appear:
Hotspots
Enter the number of hot spots to locate and output. With this option, a text file containing a tab-delimited table of hot spot information, such as node ID, maximum value, time when the maximum value occurred, and location, is generated.
Note: When you set the Time options, Adams Durability only checks the time steps within those specifications for the hot spots.
Von Mises/Max Prin/Min Prin.,/Max Shear/Normal-X/Normal-Y/Normal-Z/Shear-XY/Shear-YZ/Shear-ZX
Specify the value of stress/strain in determining hotspots from one of Von Mises, Max Prin., Min Prin., Max Shear, Normal-X, Normal-Y, Normal-Z, Shear-XY, Shear-YZ, Shear-ZX, or Signed von Mises. For more information, see the FEMDATA statement.
Radius
Enter a radius that defines the spherical extent of each hotspot. A default value of 0.0 (zero) means that all nodes in the flexible body will be hotspot candidates.
R Marker
Enter a coordinate reference marker in the model that will be used to transform the stress or strain data. If not specified, the stress or strain will be output in the basic FEA coordinate system of the flexible body (LPRF). This option can be useful when correlating strain gauge data from a physical test. If the orientation of the strain gauge does not match the FEA coordinate system, one can reference a marker whose orientation does match.
If you selected Stress on FE Part or Strain on FE Part, the following options appear:
FE Part
Enter the FE Part whose data Adams View outputs. Adams Durability outputs the data in the body coordinate system for the FE Part.
On Markers/Hot Spots
Lets you select either output on markers of the FE Part or Hotspots. The options in the dialog box change depending on the selection, as explained in the next rows of the table. For an example of defining hot spots, see the FEMDATA statement and near the end of it, the Definition of Hotspots.
If you selected On Markers, the following options appear:
Markers
Enter the markers of the FE Part whose data is to be output. Adams Solver issues a warning if a marker is specified that does not belong to the FE Part.
R Marker
Optionally, enter a coordinate reference marker in the model that will be used to transform the stress or strain data. If not specified, the stress or strain will be output in the body coordinate system of the FE Part (LPRF). This option can be useful when correlating strain gauge data from a physical test. If the orientation of the strain gauge does not match the FE Part coordinate system, you can reference a marker whose orientation does match.
If you selected Hot Spots, the following options appear:
Hotspots
Enter the number of hot spots to locate and output. With this option, a text file containing a tab-delimited table of hot spot information, such as marker ID, maximum value, time when the maximum value occurred, and location, is generated.
Note: When you set the Time options, Adams Durability only checks the time steps within those specifications for the hot spots.
Von Mises/Max Prin/Min Prin.,/Max Shear/Normal-X/Normal-Y/Normal-Z/Shear-XY/Shear-YZ/Shear-ZX
Specify the value of stress/strain in determining hotspots from one of Von Mises, Max Prin., Min Prin., Max Shear, Normal-X, Normal-Y, Normal-Z, Shear-XY, Shear-YZ, Shear-ZX, or Signed von Mises. For more information, see the FEMDATA statement.
Radius
Enter a radius that defines the spherical extent of each hotspot. A default value of 0.0 (zero) means that all markers on the FE Part will be hotspot candidates.
R Marker
Enter a coordinate reference marker in the model that will be used to transform the stress or strain data. If not specified, the stress or strain will be output in the body coordinate system of the FE Part (LPRF). This option can be useful when correlating strain gauge data from a physical test. If the orientation of the strain gauge does not match the FE Part coordinate system, one can reference a marker whose orientation does match.
If you select Monitor Points, the following option appears:
Flex Body
Enter the flexible body whose monitor point data Adams View outputs.
The following options appear for all types of FE model data:
File
Enter the output file name for the FE model data. You can specify an existing directory, root name, and/or extension. By default, the file name will be composed of the Adams run and body IDs according to the type of data and file format that you specified in Solver Settings Output More Durability Files (for more information, see the Adams Durability online help).
Time
Specify the start, end times and steps to skip for outputting the data:
From - Enter the time at which to start outputting the data. The default is the start of the simulation.
To - Enter the time at which to end the output of the data or the search of a peak load. The default is to output to the end of the simulation.
Skip - Enter the number of output steps to skip when outputting the data. The default is to output every step (0).