Release 11.0 Documentation for ANSYS
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The Pick Nodes dialog box appears after you have clicked on the Pick Nodes... button on the Basic tab of the Drop Test Set-up dialog box. You use the Pick Nodes dialog box in specifying the orientation of the model with respect to the gravitational field by picking two nodes to define a vector in the screen y direction, or by picking one node and having the object's center of gravity (cg) be the second node. The “up” direction is defined as the direction going from the first node that you pick to the second node that you pick.
Pick Two Nodes option: To specify the model's orientation by picking two nodes:
Pick the first node.
Choose OK in the Pick Nodes dialog box.
Pick the second node.
Choose OK in the Pick Nodes dialog box.
The object's orientation changes according to the vector defined by the two nodes that you picked. The object is aligned such that the vector you created will be parallel to the Y direction of the screen coordinate system.
Pick One Node and Use CG option: To specify the model's orientation by picking one node and using the object's center of gravity (calculated by ANSYS):
Pick the first node.
Choose OK in the Pick Nodes dialog box.
Choose OK again in the Pick Nodes dialog box because the second node is the object's center of gravity by default.
The object's orientation changes according to the vector defined by the node that you picked and the object's center of gravity.
Related Information -- For further information related to the Pick Nodes dialog box, see the following sections:
Basic Tab of the Drop Test Set-up Dialog Box in this user's guide