Modeling
version 4.0
The Modeler Interface consists of:

The above features allow for graphical data entry/editing.
Modeler Interface
Modeling: Skin
The Skin function wraps a skin of boundary elements around two or more polylines. Users have the option to specify mesh density and discretization.
A mesh is created between two different squares via the Skin function
Modeling: Extrude
The Extrude function is used to generate the geometry and boundary mesh for a structure that has uniform crosssection. This crosssection is first defined using a polyline, which would be extruded along a path to generate the structure. The path can either be a user defined line or polyline.
A circle is transformed into a meshed cylinder via the Extrude function
Modeling: Face
The Face function is the most versatile among the mesh generator; however, unlike the skin and extrude functions, Face does not generate geometry. It is simply a mesh generator, suitable for discretizing any region bounded by one or more nodelines. Each of the nodelines must be closed. Other than this requirement, there is no restriction on their relative orientations of number of nodes; furthermore, they need not lie in the same plane.
A mesh is created on the surface of a polygon via the Face function
Modeling: AutoCAD DXF Import / Export
Examine^{3D} can import DXF and export GEO files via the DXFGEO.exe utility, which is provided as a part of this package. This feature allows users to import AutoCAD files into Examine^{3D} and vice versa, allowing you to quickly interchange between applications. Examine^{3D} supports the following AutoCAD entities druing .DXF to .GEO converstion: LINE, PLINE, 3DPOLY, 3DMESH an PFACE (3 and 4 nodes per face only).
Modeling: Automatic Meshing/Remeshing Techniques
Examine^{3D} provides three automatic meshing/remeshing functions: Array Mesh, Radial Mesh, and Automatic Mesh. All three functions require no userinput to generate a mesh. Remeshing can easily be accomplished by resetting the previous mesh.
Array Mesh
This function is best suited for rectangular faces, if the nodes on opposing edges of the face can be joined to generate a rectangular pattern.
Sample of an Array Mesh
Radial Mesh
This function is suitable for radially symmetric faces, for which (1) the nodes are roughly equidistant from the center of the face, and (2) their distance from the center is about the same as the length of the line segments (boundary element edges) joining adjacent nodes. The function places a node at the center of the face, and joints each of the other nodes to the central one to generate the mesh.
Sample of a Radial Mesh
Automatic Mesh
This function is likely to generate a satisfactory mesh for most faces. The algorithm uses a random process; hence, successive applications of the function to the same face will give slightly different results.
Sample of an Automatic Mesh
Modeling: Volume and Surface Area Calculations
Examine^{3D} allows users to quickly calculate the volume and surface area of an object.
Sample volume and area of the given figure as displayed in the dialog box
Modeling: Automatic Geometry Validation
The object check function is used to assure that the mesh is a valid boundary element mesh, i.e., that the geometry is closed and composed completely of edge connected triangular elements. If the mesh is not valid, either the analysis will not converge to a solution, or even worse, the analysis will converge to an incorrect solution allowing for misinterpretation by the engineer. To guard against this, a set of checks have been implemented to help ensure that the mesh is valid. The first one, termed the "leaky check", looks for holes in the mesh and makes sure that the mesh is closed. The second check, defined as the "normal check", makes sure that each normal vector associated with an element points into the rock mass. The third check, termed the "intersection check", looks for the intersection of mesh geometries from openings in close proximity.
Modeling: Distance Measuring
This function is used to both locate a point in your threedimensional modeling space and to determine a distance to some other userdefined point.
Sample distance as displayed in the dialog box
Modeling: Pressure Boundary Condition
The apply traction function allows users to apply pressure or traction boundary conditions to excavations or ground surfaces. Users can specify the region of the pressure, its magnitude and direction. The region that you selected will be shaded light blue to indicate that there is a pressure or traction boundary condition on these elements.
Sample pressure applied to a region of a pump house
Modeling: Geometry Slicer
This option is used to generate the intersection polyline between the current threedimensional model and a user supplied cutting plane. The polyline may then be exported and converted to a DXF file for use in Autocad.
Sample intersection polyline