Solid modeling represents 3D objects on a computer by providing surfaces and filling in spaces to make objects appear solid. It allows for accurate mass property calculations, hidden surface removal, and shaded renderings. Solid models are the preferred format for CAD as they provide an unambiguous representation that can be used for simulation, analysis of properties like volume and inertia, and manufacturing. There are three main types - wireframe, surface, and solid - with solid models being the most complete representation. Solid modeling has applications in engineering, entertainment, medicine, and more.

1. Subject – Computer Addied Designing
Topic - What is Solid Modeling?
Presented By - Dhruv Shah

2. Solid modeling is the most advanced method of geometric
modeling in three dimensions. Solid modeling is the representation
of the solid parts of the object on your computer. The typical
geometric model is made up of wire frames that show the objectin
form of wires. This wire frame structure can be two dimensional,
two and half dimensional and three dimensional. Providing surface
representation to the wire three dimensional views of geometric
models makes the objects appear solid on the computer screen and
that is called as solid modeling.
What is Solid Modeling?

3. Accelerate design, save time and develpoment costs and
boost productivity with 3D soild modeling capabilities in any
3D design software.3D solid modeling is a critical aspect for
modern product development and provides the basis for
design, simulation, and manufacturing of any part and
assembly across a board range of industries, application and
products.
What is Solid Modeling?
There are three different forms in which a solid model
can be represented in CAD:
• Wireframe Model
• Surface Model
• Solid Model

4.  Wireframe Models:- Joining points and curves creates
wireframe models. These models can be ambiguous and unable to
provide mass property calculations, hidden surface removal, or
generation of shaded images. Wireframe models are mainly used
for a quick verification of design ideas.

5.  Surface Models:- Surface models are created using points, lines,
and planes. A surface model is unable to identify points that do
not lie on the surface, and therefore, the moment of inertia,
volume, or sections of the model cannot be obtained. A surface
model can be shaded for better visibility. Surface models are used
for modeling surfaces of engineering components.

6.  Solid models:- Solid models are the most preferred form of
CAD models. and represent unambiguous image of a component.
A solid model can be used to analyze the moment of inertia,
mass, volume, sections of the model, etc.

7. Solid models are mathematical models of objects in the real
world that satisfy specific properties, listed below.
1. Bounded: The boundary must limit and contain the interior of
the solid.
2. Homogeneously Three-Dimensional: No dangling edges or
faces be present so that the boundary is always in contact with
the interior of the solid.
3. Finite: The solid must be finite in size.

8. Applications of Solid Modeling :-
Solid modeling is used not only for creating solid models of
machine parts, but also the building, electric circuits and even of the
human beings. The solid modeling software are being used for a
large variety of applications, here are some of them.
1. Engineering :- The engineering design professionals use solid
modeling to see hoe the designed product will actually look like. The
architects and civil engineers use it to use the layout of the designed
building.
2. Entertainment industry :- The animation industry has been using
sollid modeling to create various characters and the movies out of
them.
3. Medical industry :- Modern imaging scanners are being used to
create the solid models of the internal parts of the body. The helps
the doctors to visualize specific issues of the body, designing various
medical devices etc.

9. Advantages of Solid Modeling :-
Solid model is one of the most important applications of the
CAD software and it hasbeen becoming increasingly popular of
late. The solid modeling CAD software helps the designer to see
the design object as if were the real manufactured product. It
can be seen from various direction and in various views. This
helps the designer to be sure that the object looks exactly as
they wanted it to be. It also gives additional vision to the
designer as to what more changes can be done in the object.