REPORT About

Adams Programme

Student Name : Halah Mohammed

Mostafa
 content
Introduction -
? What is the ADAMS-
-Why Adams for MBD ?
-Simulate "Real World" Physics
What are Adams Multidiscipline
-? Solutions
Adams Control and Adams -
Mechatronics
-Adams Vehicle Vertical Solutions
-Adams/Machinery Solution
Example -
- Conclusion
 Introduction

Computer modeling is an effective tool to

accelerate and improve the design of new
mechanical systems. The MSC Adams/View
[1]
is appropriate software tools for creating
computer models. In addressing the motion
of machine parts, machines and equipment it
is necessary first to create a kinematics
model. Conventional numerical solution uses
vector calculus as the basic mathematical
apparatus because the main kinematics
variables are vector quantities. Kinematics
model of a device schematically captures all
its properties which are essential in
kinematical analysis i.e. individual members
with dimensions, kinematics pairs, and so on.
Classical numerical solution of movement
kinematics is often lengthy and difficult
especially for complex kinematics models
with different movements. To simplify and
expedite the analysis a graphical solution
may be used which is nowadays replaced
with a solution using computer techniques
using various software products. These
software products ease the investigators
effort. Investigator enters the model
configuration and the input data and the
program calculates the required outputs.
 These data can be presented in a tabular
.form or the program draws graphical results
? What is the ADAMS
The Multibody Dynamics Simulation Solution
Adams helps engineers to study the dynamics
of moving parts, and how loads and forces are
distributed throughout mechanical systems.

Product manufacturers often struggle to understand

true system performance until very late in the design
process. Mechanical, electrical, and other subsystems
are validated against their specific requirements
within the systems engineering process, but full
system testing and validation comes late, leading to
rework and design changes that are riskier and more
.costly than those made early on
Why Adams for MBD ?

Modeling
The Adams intuitive ribbon-style interface and model
browser makes it easy for even novice users to create
complete, accurate mechanical models. A core
package (Adams/View, Adams/Solver, and Adams/
PostProcessor) allows you to import geometry from
most major CAD systems or to build a solid model of
the mechanical system from scratch. You build a
system the same way you build a physical system
by creating and assembling parts, connecting them
with joints and driving them with motion generators
and forces. You can also give your Adams model
parametric properties and initiate a set of parametric
.simulations to study design sensitivities
Multidiscipline Mechanical System Simulation
With functionalities like Adams2Nastran export and
ViewFlex, Adams introduces bi-directional integration
with MSC Nastran that allows re-use of validated
Adams models in Nastran to perform modal and
frequency response analysis. Adams/Mechatronics
easily incorporates control systems into mechanical
models by dynamically linking an external system
library from a controls application, such as Easy5 and
MATLAB. Control system parameters can be quickly
adjusted for evaluation and included in a design study
for simultaneous optimization of both control system
and mechanical system
Flexible Body Integration
Adams/Flex provides the technology to correctly
include a components flexibility even in presence of
large overall motion and complex interaction with
other modeling elements. Greater emphasis has been
placed these days on highspeed, lightweight, precise
mechanical systems. Often these systems will contain
one or more structural components where
deformation effects are paramount for design
analyses and the rigid body assumption is no longer
valid. Adams/ Flex allows importing finite element
models from most major FEA software packages and
is fully integrated with Adams package providing
access to convenient modeling and powerful post-
.processing capabilities
The ViewFlex module in Adams/View enables users to
transform a rigid part to an MNF-based flexible body
using embedded finite element analysis where a
meshing step and linear modes analysis will be
performed.It is our new product module powered by
MSC Nastran, allowing one to create flexible bodies
without leaving Adams/View and without reliance on
3rd party Finite Element Analysis software. Also, its a
streamlined process with much higher efficiency than
the way users have traditionally generated flexible
.bodies for Adams in the past
Vibration Analysis Made Easy
With Adams/Vibration, engineers replace physical
tests on shaker devices with virtual prototypes. Noise,
vibration, and harshness (NVH) are critical factors in
the performance of many mechanical designs but
designing for optimum NVH can be difficult.
Adams/Vibration allows engineers to easily study
forced vibration of mechanical systems using
.frequency domain analysis
Durability Analysis Improves Product Quality
Durability testing is a critical aspect of product
development and issues discovered late in the
development cycle lead to project delays and budget
overruns. Worse yet, in service failures lead to
dissatisfied customers, safety issues, and warranty
costs. Adams/Durability allows engineers to assess
stress, strain or life of components within mechanical
systems to design products to last. Direct access to
physical test data in industry-standard file formats
enables engineers to use loads data captured during
tests, and to easily correlate simulation and testing
.results
Vehicle Design & Testing
Adams/Mechatronics is a plug-in to Adams which can
be used to easily incorporate control systems into
mechanical models. Adams/Mechatronics has been
developed based on the Adams/Control functionality
and contains modeling elements which transfer
information to/from the control system. For example,
using Adams/Mechatronics in Adams/ Car, you can
quickly create assemblies of vehicle systems
including control systems, and then analyze them to
.understand their performance and behavior

Adams/Machinery for Machinery Application

Adams/Machinery is a new Adams software solution
that allows a machinery manufacturer to efficiently
build functional virtual prototypes of their machinery
components and systems early in the design cycle, so
they can perform a series of virtual tests before
committing to building a physical prototype. With this
new solution, machinery manufacturers will reduce
the number of prototypes, decrease the design cycle
.and meet their functional specifications in less time
High Performance for Improved Productivity

Durability testing is a critical aspect of product

development and issues discovered late in the
development cycle lead to project delays and budget
overruns. Worse yet, in service failures lead to
dissatisfied customers, safety issues, and warranty
costs. Adams/ Durability allows engineers to assess
stress, strain or life of components within mechanical
systems to design products to last. Direct access to
physical test data in industry-standard file formats
enables engineers to use loads data captured during
tests, and to easily correlate simulation and testing
.results

Adams Control integration Adams Control

and Adams Mechatronics

Adams Mechatronics is a plug-in to Adams which can

be used to easily incorporate control systems into
mechanical models. Adams Mechatronics has been
developed based on the Adams Control functionality
and contains modeling elements which transfer
information to/from the control system. For example,
using Adams Mechatronics in Adams Car, you can
quickly create assemblies of vehicle systems
including control systems, and then analyze them to
understand their performance and behavior.

Add a sophisticated controls representation to

your Adams model

Connect your Adams model to block diagram

models you've developed with control
applications such as Easy5 or MATLAB
 Experience flexibility in simulation styles to suit
your problems' needs: simulate within Adams,
within the controls software or co- simulation

Access advanced pre-processing for Adams

Controls

Setup and couple a control system to a

mechanical system

Convert signal units automatically

Connect transducer and actuator signals to the

control systems easily

Conveniently review and modify the control

system input and output specifications

Ideal for complex integrations

Simulate "Real World" Physics
As the world's most famous and widely used
Multibody Dynamics (MBD) software, Adams improves
engineering efficiency and reduces product
development costs by enabling early system-level
design validation. Engineers can evaluate and manage
the complex interactions between disciplines
including motion, structures, actuation, and controls
to better optimize product designs for performance,
safety, and comfort. Along with extensive analysis
capabilities, Adams is optimized for large-scale
problems, taking advantage of high performance
computing environments. Utilizing multibody
dynamics solution technology, Adams runs nonlinear
dynamics in a fraction of the time required by FEA
solutions. Loads and forces computed by Adams
simulations improve the accuracy of FEA by providing
better assessment of how they vary throughout a full
.range of motion and operating environments

Adams Multidiscipline Solutions

Optional modules available with Adams allow users to

integrate mechanical components, pneumatics,
hydraulics, electronics, and control systems
technologies to build and test virtual prototypes that
accurately account for the interactions between these
.subsystems

Adams enables engineers to evaluate and manage the

complex interactions between disciplines including
motion, structures, vibrations, and controls to better
optimize product designs for performance, safety, and
comfort

Adams/Controls

Add a sophisticated controls representation to your

Adams model

Connect your Adams model to block diagram

models youve developed with control applications
such as Easy5 or MATLAB

Experience flexibility in simulation styles to suit your

problems needs: simulate within Adams, within the
controls software or co-simulate

Adams/Mechatronics
Access advanced pre-processing for
Adams/Controls
Setup and couple a control system to a mechanical
system
Convert signal units automatically
Connect transducer and actuator signals to the
control systems easily
Conveniently review and modify the control system
input and output specifications
Ideal for complex integrations

Adams/Flex

Integrate FEA-based flexible bodies into your model

Better represent structural compliance
Predict loads and displacements with greater
accuracy

Examine the linear system modes of a flexible model

Broad and convenient control over modal
participation and damping

Adams/ViewFlex

Create flexible bodies entirely within Adams/View or

Adams/Car

Reduce reliance on 3rd party FEA software using

built in MSC Nastran technology

Generate a flexible body from existing solid

geometry, imported meshes or newly created
extrusion geometry

Obtain detailed control over mesh, modal analysis

and flexible body attachment settings for an accurate
representation of component flexibility

Adams/Durability
Shorten your development cycle, reducing costly
durability testing
Provide direct file input and output in RPC III and
DAC formats to reduce disk space requirements and
improve performance
Perform modal stress recovery of flexible bodies
within Adams
Export loads to popular FEA software including
Integrate MSC Nastran for detailed stress analysis
with MSC Fatigue to do component life prediction

Adams/Vibration

Analyze the forced response of a model in the

frequency domain over different operating points

Transfer your linearized model from Adams

products to Adams/Vibration completely and quickly

Create input and output channels for vibration

analyses

Specify frequency domain input functions, such as

swept sine amplitude/ frequency, power spectral
density (PSD), and rotational imbalance

Create frequency-based forces

Solve for system modes over frequency range of

interest

Evaluate frequency response functions for

magnitude and phase characteristics

Animate forced response and individual mode

response

Tabulate system modal contributions to forced

vibration response

Tabulate contribution of model elements to kinetic,

static, and dissipative energy distribution in system
modes

Specify direct kinematic inputs

Plot Stress/Strain frequency response functions

 Adams Vehicle Vertical Solutions
With Adams Car vertical products,
engineering teams can quickly build and
test functional virtual prototypes of
complete vehicles and vehicle
subsystems. Working in the Adams
vehicle vertical environment,
automotive engineering teams can
 exercise their vehicle designs under
various road conditions, performing the
same tests they normally run in a test
lab or on a test track, but in a fraction
of time
Adams/Car
Explore the performance of your
design and refine your design before
building and testing a physical
prototype
Analyze design changes much faster
and at a lower cost than physical
prototype testing would require
Vary the kinds of analyses faster
and more easily
Work in a more secure environment
without the fear of losing data from
instrument failure or losing testing time
because of poor weather conditions
Run analyses and what-if scenarios
without the dangers associated with
physical testing
Perform a repeatable set of tests on
a global basis, ensuring that you work
with common data, tests, and, most
important, results
 Adams/Chassis
Simulate full vehicle events (such as
steady state drift, throttle off in
turn, and constant radius)
Simulate half vehicle events
including dynamic load case and
static vehicle characteristics
Use with Adams/Insight to
perform systematic experiments on
Study the effect vehicle model
of multiple design variations
Optimize the design
Address the robustness issue
 Adams/Machinery Solution
Adams/Machinery is a new Adams
product fully incorporated inside
the Adams/View environment. It
contains multiple modeling
productivity modules which enable
users to create common machinery
components more efficiently than by
using the more generic standard
Adams/View model construction
.functionality alone
Benefits to Engineers
High-fidelity simulation of -
common mechanical parts, such as
- Enhanced gears, belts, and chains
productivity with incredibly quick
model-solve-evaluate process times
An
automated, wizard-driven model -
creation process for ease-of-use
Straightforward evaluation of -
results in Adams/Postprocessor
 : Example
Description of the Model

MSC Adams is one of the most widely used multi-

function computing software [2]. The aim of this
article is to create a functional model crank rocker
mechanism in ADAMS/View and to make its
complete kinematics analysis [3]. The aim is to
investigate the movement of individual members
of the mechanism and its points.
We analyze the movement of point A and point B
on the member 3 (Figure 1). The member 3 is
performing planar motion. The point A of the
member 2 moves in a circle with radius 12 and
point B of the member 4 also moves in circle with
radius 14. We determine angular velocity and
angular acceleration of member 2, angular
velocity and angular acceleration of member 4.
Kinematical analysis of the mechanism means to
solve kinematical variables of movement of the
driven members with respect to the kinematics
variables of movement of the driving members
Respective lengths of the mechanism are: l2=120 mm,
l3= 250 mm, l4=260 mm, O21O41=300 mm. Driving link
O21A has a counterclockwise angular velocity =1
(rad/s). Our task is to determine angular displacement
, angular velocity and angular acceleration of
the link O41B graphically for the crank position indicated
and then to create a model of a mechanism in MSC
Adams/View environment.
The crank O21A rotates around point O21, motion of the
connecting member AB is a general planar motion and
member O41B rotates around point O41. When we
determine lengths of the members we indicate velocities
of the points A and B. The angular velocity of the
member 2 is .

Kinematics Analysis of the Model

The velocity of points A and B can be obtained by
using the rule of the viewing angles [4]. Tangent of
the angle under which we see the endpoints of
velocity from the permanent center of rotation is
proportional to the angular velocity of the rotating
member. If we denote the angular velocity of
 the member 2 with respect to 4, then for the
velocity and acceleration at point A shall
:apply [5]
 Conclusion

The MSC ADAMS/View software products is

program suitable for kinematics analysis that
allows to modeled kinematics chains and
solve their motion.
We investigated a functional model of a
crank rocker mechanism. The whole
modeling simulation was carried out by
simulation program MSC ADAMS/View.
Subsequent simulation of several
configurations of the crank rocker
mechanism and the comparison of the
outputs showed the impact of the change of
the respective parameter.
In the work is shown a procedure for solving
kinematics problem of the mechanism using
analytical and graphical solution. Results are
obtained in form of time diagram of the
desired variables. The results obtained by
the simulation of the crank rocker
mechanism were processed by the
postprocessor program of MSC Adams/View.
[7]

Program MSC Adams/View makes it easy to

analyze complex mechanical systems with
multiple degrees of freedom. In the paper
one module of the number of modules
namely MSC Adams/View was used as a tool
which allows a better simulation and
visualization of the model and easier
evaluation of the results obtained. With the
module MSC Adams/View they represent a
tool that is able to addresses various types of
mechanisms with many degrees of freedom.
Mastering this methodology provides a
suitable tool for solving problems of teaching
and practice.