Computer Aided Engineering


Oct 31, 2013 (3 years and 7 months ago)


Computer Aided

Presented by Jasmin Duljkovic

Boise State University

What Will Be Covered

An exercise

application and
use of CAE

Nuts and Bolts

How the CAE works

Real world example

CAE definition

Computer Aided

CAE retrieves description and
geometry from a CAD database

It is used in almost every industry
such as aerospace, automobile

CAE depends on CAD


Computer aided engineering is
an engineering analysis
performed at the computer
terminal using a CAD (Computer
Aided Design) system

Brainstorming about

How is could be used in my or any other

CAE can be used to perform variety tests
like car crash the test simulation

Commercial and military flight simulations

It is also used to analyze properties of
different types material used in production

Application of computerized methods
during the design of technical systems

Brainstorming about

It increases production efficiency
and quality through better designs

Executives and managers heavily
rely on CAE analysis

Tool for decision making
what the
product is going to look like, its
performance characteristics

What improvements need to be

Nuts and Bolts

CAD analysis on computer screen

No need to build products’ prototypes

Results of analysis essential for
product future

Customer satisfaction is priority

CAE has to be compliant with many
U.S. and international standards

Nuts and Bolts

Product real
world performance and

Products tested for any possible
conditions you can think of

The key idea is to make predictions
of products’ life and capabilities

Provide the customers with a
concept before building expensive
prototypes and pre
production units

Nuts and Bolts

Conceptual design thorough

Optimization of the concept

Final results of analysis help
reduce future costs

Great savings in time and money

Ensures achievement of
customer satisfaction

Nuts and Bolts

CAE is applied in these four main
types of analysis:

Finite Element Analysis (FEA)

Computational Fluid Dynamics

Boundary Element Analysis

Kinematic/Dynamic Analysis

Finite Element Analysis

Finite element analysis can be
executed on mechanical systems to
conduct static and dynamic
analyses, along with identification of
natural frequencies and mode
shapes. Capabilities range from
single component analysis to large
disciplinary research projects.


FEA Software

DEAS Master Series 6
& 7




∙ HyperWorks Suite

Why Should FEA Be

It allows the customer the product
before investing into building
expensive prototypes and pre
production units. It is an effective
tool to analyze problems that can
range from NHV to durability issues.

Analysis is composed of various
types of testing

Tests Conducted:

Static stiffness testing

Modal analysis

Impact testing

Acoustic testing

Valvetrain Dynamics

Additional FEA

Composite and Nonlinear Analysis

Viscoelastic Material Database of
over 3,000 materials

Isolation system and damping
treatment design

Forces reconstruction

Tuned Dampers can be designed and

Constrained and free layer damping
treatment design

Nonlinear Valvetrain Analysis


Fluid flow and heat transfer
optimization is essential in the early
design cycle

CFD tools provide engineers insight
into complex transient and turbulent
flow fields

It allows analysis and provides
design for engineers to optimize
component geometry for efficient
fluid flow and heat transfer

Why Should It Be Used

It visually allows users to view:

1) Velocity


2)Thermal conditions

in the modeled fluid fields

Properties from the fluid flow and
heat transfer such as forces,
temperature and film coefficients
can be used in other analysis codes
such as FEA and BEA

Boundary Element

It is used to predict noise
characteristics on various
mechanical systems

When coupled with FEA, BEA is very
useful in determining the acoustical
effects of structural design

It uses COMET acoustics software

Why Should BEA be

It allows the customer to predict
acoustical performance of your concept
before production. This allows for design
modifications to improve the overall
acoustic characteristics without costly
laboratory testing and various prototypes
from having to be fabricated.

BEA is used
to predict and optimize the Noise,
Vibration, and Harshness (NVH)
characteristics of various structures from
small components to full size powertrain
systems and interior vehicle cabs.

BEA Capabilities

Sound pressure analysis

Sound intensity analysis

Sound power predictions

Radiation efficiency analysis

Subjective noise prediction (audio
listening files)

Sound quality optimization (Noise
field prediction and analysis


Tool used is called ADAMS

It is the world’s most widely used
mechanical systems simulation tool.

It is capable of static or dynamic
analysis of motions and forces
associated with both rigid and
compliant multi
bodied large
displacement non
linear motion
mechanical systems.


The use of this tool will help:

Design, develop and validate your
product virtually,

Optimize the performance of your

Eliminate numerous costly physical
prototypes, and

Bring your product to market quicker.

Why Should K/D A Be

Design Applications:

∙ Position the tie rod of a vehicle to
achieve the desired toe curve,

∙ Determine the static and dynamic
operating loads of a vehicle

∙ Determine the operating envelope
of a moving robot arm, or Provide an
ADAMS model of a system for in
house design work.

Other Uses

Development Applications

Sort through selection of bushings
for optimal vehicle performance,

Determine level of damping required
for machine isolation,

Try out a prototype linkage design
before physical hardware is built, or

Determine the trade
offs and effects
of caster on steering effort.

Other Uses

Test Applications

Design test fixture to input motion
and loads,

Eliminate test fixtures with virtual

Determine the durability loads of a
vehicle on a virtual road, or

Determine if vehicle meets rollover

Real World Example


What are MEMS?

Micro Electro Mechanical Systems
(MEMS) are micromachines the size
of a grain of salt or the eye of a
needle that integrate mechanical
elements, sensors, actuators and
electronics on a common silicon

MEMS Applications

MEMS applications include:

optical switches within
telecommunication and networking

accelerometers in automotive

inkjets in desktop printers and

sensors in medical testing



Krebs Engineers from Tucson, AZ

CAE changed the way they operated
for the last 50 years

Processes improved along with
efficiency and flow of technical

In the past, they worked manually

CAE software and systems
introduced automation to their


CAE is an analysis entirely done on
computer using CAD systems. Its
purpose is to analyze different
materials, products, their
performance and quality such as
durability, stability, endurance and/or
reactivity to any possible factor that
can affect the performance of the
material, part, and/or the product. It
is cost saving and ensures customer
satisfaction and improves the speed,
efficiency and the quality of many
products ranging from simple parts
to vehicles, airplanes etc.

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