25 docs tagged with "nodes"

Nodes may be created one at a time using the Add nodes sculpt tool, or a number of nodes can be created at once using the Sculpt > Add nodes menu command. The procedure is as follows.

Where relevant, tables are output for those items identified in the case, node, element and member lists. Changing a list from the default to a specific selection refines the content of the table.

Coincident nodes can be collapsed using the Sculpt > Collapse coincident nodes menu command. The procedure is as follows.

Nodes and elements can be deleted using the Edit > Delete (Del) menu command.

The Display Methods page of the Labels and Display Methods dialog box is where the form and colour of the various element types may be specified and where the drawing of unattached nodes may be specified.

A set of nodes, elements or members must be selected prior to opening this dialog box, to serve as the basis of the extrusion.

The sculpt extrude command generates nodes and elements by a specified number and length of increments. The extrusion is based on either a polyline or a set of nodes or elements and is generated along an axis of a specified axis set or along an alignment, if any exist.

The nodes that are to be flexed must be selected prior to opening this dialog box.

The flex command flexes a set of nodes into a specified shape. Typically the nodes are originally in a line, though this need not necessarily be the case. One of the set of nodes is identified as being the one to be shifted explicitly and the new position of this node is specified. The flex shape can be specified as linear, circular, elliptical or parabolic. When flexing linearly any node can be selected as the shift node; otherwise, the nodes at the ends of the line of nodes may not be shifted. End nodes are not flexed except when an end node is explicitly shifted in a linear flex. The flex operation moves the nodes to result in the specified shape, anchored by the end nodes and the explicitly shifted node.

The coordinates of all nodes are stored in global axes; this is reflected in the nodal properties pane. However, they are displayed and edited in the axes of the current grid plane in the nodal table. The default current grid is the global grid plane (which refers to global axes and has the elevation set to zero).

The Highlight Coincident Nodes command highlights all nodes found to be within the coincidence tolerance of another. The coincidence tolerance is defined in the Sculpt Preferences.

This dialog is accessible from the Model > Manage data menu command. It is only enabled when results are not present.

These dialogs can be accessed from the Model > Manage User Modules menu command.

The coordinates of individual nodes may be changed using the Drag nodes sculpt tool and of multiple nodes using the move nodes command.

This dialog box is presented in several guises depending on the context in which it is opened; it is used to move or copy nodes, elements or members.

The sculpt move and copy commands operate similarly. Both can operate on nodes, elements or members. Both operate by shifting, rotating or reflecting the selected items. The amount of shift can be specified by a polyline.

Three type of nodal loading are possible in GSA. Node loads are the most direct type of loading and apply a force or moment directly to a node. Applied displacements provide a method of determining the state of the structure given a set of fixed displacements at selected nodes. Settlements work with constraints to also provide a way of specifying displacements at specified nodes, but in this cases these are unaffected by any other loads on the structure. Noded to which settlements are applied must be restrained in the settlement directions.

Node Influence Effects can be defined here for use in an influence analysis. The effect of a moving load will be found for any of the following situations:

Node loads are the most fundamental type of load. A node load is a force or moment applied to a particular node or set of nodes. Node loads can be applied in local (i.e. node constraint axis), global or user defined axis directions. User axes can be Cartesian, cylindrical or spherical.

The Nodes page of the Labels and Display Methods dialog box is where various types of node related labels may be switched on for display in the current Graphic View.

Nodes are used to locate points in space. Elements are located in space by referring to nodes in their topology lists. Loads may be applied to nodes. The Node Definition dialog may be used to define node all attributes of nodes.

Nodal coordinates can be rounded to the nearest specified length using the Sculpt > Node operations > Round coordinates menu command. The procedure is as follows.

There are several cursor modes available for sculpting the geometry of a model. New nodes and elements can be created, the attributes of existing nodes can be modified and existing nodes can be moved (resulting in elements attached to these moving). These operations are carried out by first selecting the appropriate sculpt tool cursor mode and then using the cursor on the graphical image. The sculpt tools may be selected from the Sculpt toolbar or the Sculpt > Sculpt geometry cursor modes menu.

Ragged lines of nodes can be straightened using the Sculpt > Node operations > Straighten spacing proportionally and Sculpt > Node operations > Straighten spacing evenly menu commands. The Straighten spacing proportionally command maintains the nodal positions as projected onto the line between the two extreme nodes; the Straighten spacing evenly spaces the nodes at equidistant positions along that line. The procedure is as follows.

The sculpt transform geometry command moves selected nodes to positions expressed as a function of the original positions of the nodes. Normal mathematical notation is used in expressions. For example: