Adams Basic Package > Adams View > Adams View > Dialog box - F1 help > J - O > Modify Flexible Body Connections

Modify Flexible Body Connections

Right click Modify
Select to modify the flexible body connections.
 
For the option:
Do the following:
Update table
Select to update the Marker and Node table with the changes you've made.
Reset table
Select to reset the Marker and Node table to the original connections found.
Node Finder
Select to display the Node Finder Dialog Box and search for nodes.
Display only active markers/connections
Select to display only those markers and connections that are currently active. Inactive markers/connections will not be displayed in the table.
Align All Via
Select this button to align all the Align column choices as per the option selected.
Move Marker to Node
Select to move the marker in the selected row of the Marker and Node table to the location of the specified node.
Preserve Marker Expression
Select to maintain the parameterization of the marker in the selected row of the Marker and Node table. The parameterization would be specified through Adams View expressions. This will keep the marker at its parameterized position.
Preserve Marker Location
Select to maintain the location of the marker in the selected row of the Marker and Node table. If a marker is not coincident with the attachment node, Adams Flex preserves the offset. This is helpful if you have defined a joint location on the marker. It keeps the joint from breaking.
Note: Adams Solver (FORTRAN) does not support markers offset from their attachment nodes. Therefore, Adams Flex (FORTRAN) automatically introduces a massless link between the marker and the flexible body. Learn more.
Move Node to Marker
Select to move the node in the selected row of the Marker and Node table. to the location of the marker location. The node must be an attachment node. This option will invoke Adams Flex in the background and generate a new MNF with the node(s)' positioned edited. This MNF will then be used for the swap.
Note that the modal content of the MNF is not changed by this action. The modal response of the flex body may be approximate, depending on how much the attachment node has been moved from its original location. Moving a node to a marker location removes the need for a rigid offset to be maintained by Adams Flex between node and marker location during the simulation.
Comparing this option to preserving the marker location: both result in an approximate solution. If the offset is significantly far from zero, the 'move node' option may be better since no artificial moments are introduced. If offset is close to zero, the artificial moment may be negligible.
Number of digits
Enter the number of digits displayed to the right of the decimal point in the Marker and Node table.
Sort By
Select how to sort the Marker and Node table based on the headings of the columns. For example, you can sort the table by the marker that is the most distant from its selected node.
Marker - Sort alphabetically by marker name.
Connections - Sort by those markers with connections.
Node ID - Sort by the ID of the node.
Interface - Sort by those nodes that are interface nodes.
Distance - Sort by those markers the most distant from the selected node.
Align - Sort by the values in the Align column.
Marker and Node Table
Displays the markers on the existing body and the node to which the marker will be transferred on the replacement flexible body.
Marker - All the markers on the rigid body that will be transferred to the flexible body.
Connections - All the forces and joints on the rigid body that use the marker for their definitions. These joints and forces will be transferred to the flexible body.
Marker Location - Marker's current location.
Node ID - The attachment node chosen for the marker when it is transferred to the flexible body. When Adams Flex initially creates the table, it chooses the closest node. You can change the chosen node using the node id cell itself.
Interface - An asterisk (*) in this column indicates that the chosen attachment node is an interface node.
Relative Location - The x,y,z coordinates of the chosen attachment node relative to the marker's current position, resolved in the marker's coordinate system. A perfect match is 0.
Distance - The magnitude of the relative location vector.
 
Align column - Indicates how Adams Flex will position the marker. The three options are:
Move Mar - When Adams Flex transfers the marker to the flexible body, it will move it to the chosen attachment node. How far the marker will be moved is given in the Distance column.
Mar Loc - The current location of the marker will be preserved. If the marker's position was defined by an Adams View expression, the parameterization will be lost.
Mar Expr - If the marker's position is defined by an Adams View expression, the parameterization will be preserved. Otherwise, the marker's current position will be preserved. This is helpful if you have defined a joint location using the marker. It keeps the joint from breaking.
Move Node - When Adams Flex transfers the node to the marker location, it will move it to the chosen marker location. How far the node will be moved is given in the Distance column. The node must be an attachment node. This option will invoke Adams Flex in the background and generate a new MNF with the node(s)' positioned edited. This MNF will then be used for the swap.
Note that the modal content of the MNF is not changed by this action. The modal response of the flex body may be approximate, depending on how much the attachment node has been moved from its original location. Moving a node to a marker location removes the need for a rigid offset to be maintained by Adams Flex between node and marker location during the simulation.
Comparing this option to preserving the marker location: both result in an approximate solution. If the offset is significantly far from zero, the 'move node' option may be better since no artificial moments are introduced. If offset is close to zero, the artificial moment may be negligible.
You use the Move Marker to node, Preserve Marker location, Preserve Marker expression, and Move Node to Marker options to set the Align column value.
View Parts Only
Select to display only parts present in the model.
View Topology
Select to display a representation of the flexible body and its connections to other parts. Learn more about Graphically Viewing Model Topology.