Solid Model:
Solid Model: Solid model is the clear, complete representation of object. This used to represent an object and complete details is obtained by drawing a separate solid model of the object.In creating the solid model objects, 3D modeling concepts are used.
Schemes of solid modeling:
In this modeling the 3D space is used to divided two types Exterior and Interior.
There are different schemes:
There are different types of Schemes they are as follows:
- C-rep
- B-rep
- Sweep Rep
C-representation:
- This is mostly used one and this can represent easy to understand, they can create easily and can stored. this is commonly used for representing simple objects.
- In this they use polyhedral primitives to get high accuracy.
- To represent complex structures it is difficult to it. to generate wire-frame model C-rep should be converted in to B-rep.
B-representation:
- This type is used to make a physical object. the entities used in it are geometric and topological entities.
- In this thy are bonded to one another like physical body is bounded by a set of faces and each face is bounded by edges and each edge is bounded by vertices.
- This is used to automobile body, aircraft fuselage etc.
- space required for this is more. for designing and production by Euler operation it is not possible. this is also not useful in tool movement etc.
Sweep Representation:
- This type of representation is usedful in creating 2 1/2 D solid module objects.
These are of three types:
Linear sweeps: Following path should be linear.
Non-Linear Sweep: There should be a curve path.
Hybrid Sweep: It should be linear or non-linear.
- By this sweep representation complex parts can be representate by this.
- In this there is a limited modeling domine and there should be a proper sweep direction if not the shapes obtained is irregular.
Properties of Solid Model:
- Solid model should determine the interior of solid.
- It should be Rigidity.
- In this Solid boundaries should in contact with interior.
- Finite Describability.
