MESH MODELING By Prof Rajednra SalokheB.Tech. (I.I.T.Delhi)Please view my website for Bookshttp://arutapub.brinkster.net

(AutoCAD 2010 Only)The mesh modeling was introduced new in AutoCAD 2010. In mesh modeling every object comprises of small planes objects brought together to create more complex surfaces. Mesh objects are made up of tessellated objects. Tessellated objects are faces bounded by edges. With free-form modeling tools, faces, edges, and vertices of tessellated objects can be moved, scaled, stretched, pushed, pulled, and rotated individually using the GIZMO or other tools to create smooth and rounded objects.The mesh modeling is given importance in AutoCAD 2010. This is to compete some other 3D software and create complicated objects.For example a box comprises of many small, tessellated objects as shown below.

You can decide the number of cubes you need width wise, length wise and height wise. This is set by clicking on the small arrow on the 'primitives' pallet. The 'mesh primitive dialog box' will popup.

Each cube has faces, edges and vertexes. The concept is shown below.

EDGE SELECTION1]Set the filter to edge.2] Select edge by pressing the control key.

VERTEX SELECTION

EXTRUDING FACEIn extrusion the face is extended. See the following figure to know how it looks after smoothness is applied.

MOVING THE FACEMoving the face will pool all the relevant meshes as follows.

OTHER MESH OBJECTS

You can draw all these meshes by typing MESH at command prompt instead of '3D' command used in earlier versions up to AutoCAD 2009.SPLITTING A FACEYou can split a face into two and also further.

Click on the split tool. Select the face. Select two points of the splitting line.

APPLYING CREASEThe crease option flattens the surface, which has become oval due to extrusion.

TABSURF

PRACTICE 1] Set the primitive mesh as 8x6x3