1. CAD (Computer-Aided Design) - refers to the
use of computers in converting the initial idea
for a product into a detailed engineering design.
The evolution of a design typically involves
the creation of geometric models of the
product, which can be manipulated, analyzed,
and refined.
In CAD, computer graphics replace the
sketches and engineering drawings traditionally
used to visualize products and communicate
design information.

2. CAE –COMPUTER AIDED ENGINEERING
• The use of computer-based tools to assist in
solution of engineering problems.
• For example, to analyze the robustness and
performance of components and assemblies.
The term encompasses simulation, validation,
and optimization of products and
manufacturing tools.

3. CAE areas covered include
• Stress analysis on Element Analysis)
• Thermal and fluid flow analysis
Computational fluid dynamics (CFD)
• Multibody dynamics (MBD) & Kinematics
• Analysis tools for pcomponents and assemblies
using FEA (Finite rocess simulation for operations
such as casting, molding, and die press forming.
• Optimization of the product or process.
• Safety analysis of postulate loss-of-coolant accident
in nuclear reactor using realistic thermal-hydraulics
code.

4. • Pre-processing – defining the model and
environmental factors to be applied to it.
(typically a finite element model, but facet,
voxel and thin sheet methods are also used)
• Analysis solver (usually performed on high
powered computers)
• Post-processing of results (using visualization
tools)
In general, there are three phases in any
computer-aided engineering task:

5. CAM
CAM (Computer- Aided Manufacturing) - Use of
computers to program, direct and control
production equipment in the fabrication of
manufactured items.
CAM may also refer to the use of a computer to
assist in all operations of a manufacturing plant,
including planning, management, transportation
and storage.
As the model generated in CAD and verified in
CAE can be input into CAM software, which then
controls the machine tool.

6. Top 20 largest CAM software companies
Dassault Systèmes
Siemens PLM Software
Delcam
Vero Software
PTC
Tebis
Open Mind Technologies
Cimatron
C&G Systems
Missler Software
CNC Software
CG Tech
DP Technology
SolidCAM
SesCoi
NTT Data Engineering
Systems
Nihon Unisys
BobCAD-CAM
Geometric Technologies
Surfware

7. • MRPII (Manufacturing Resource Planning) - A
method for the effective planning of all
resources of a manufacturing company.

8. CIM (Computer-Integrated Manufacturing) - The
integration of the total manufacturing organization
through the use of computer systems and
managerial philosophies that improve the
organization's effectiveness; the application of a
computer to bridge various computerized systems
and connect them into a coherent, integrated
whole. For example, budgets, CAD/CAM, process
controls, groups technology systems, MRPII,
financial reporting systems, etc., are linked and
interfaced.