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Primitives of b-rep Scheme
The building blocks for b-rep. models are :
Vertex
It is a unique point (an ordered triplet) in space.
Edge
An edge is a finite, non-self-intersecting, directed space curve bounded by two vertices that are not necessarily distinct.
Face
A face is defined as a finite connected, non-self-intersecting, region of a closed oriented surface bounded by one or more loops.
Loop
A loop is an ordered alternating sequence of vertices and edges.
Genus
It is the topological name for the number of handles or through holes in an object.
Body (or Shell)
It is a set of faces that bound a single connected closed volume. A minimum body is a point. Topologically this body has one face, one vertex, and no edges. It is called a seminal or singular body
Design the keys - Shear Keys: A solid circular shaft is to transmit 200 kN at 200 rpm. If the maximum shear stress is not to exceed 80 n/mm 2 design the shaft. Design the key
Stitch Welding This is a variation of spot welding, in which a series of overlapping spot welds are made in the same manner as stitching cloth. Stitch welding may be performed
PRE HEAT INTERPASS TEMP. REQUIREMENTS FOR FILLER METALS The preheat and inter pass temperature must be sufficient to prevent the cracking.Previous Experience has shown that t
Creating 3-d solid models Two basic approaches to create solid models are : (i) Constructive solid geometry (CSG or c-rep), and (ii) Boundary representation (b-rep).
Graphical simulation animation of a CAD system can be used to inspect the tolerance and interference of matching components of a product. It will be possible to precisely define
formulae for finding gross torque developed by the armeture
Describe productivity. How do we calculate the productivity? Enumerate various factors effecting the productivity. Define various ways for the improvement of productivity.
stability
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