19/10/2016
4
Moment of force (Torque)*
Definition of moment of force
Couples
Equivalent force systems
When you swing a door on its hinges , it will move very easily when (i) you push hard, and (b) you
push furthest from its hinges, near the edge of the
ABSTRACT
The purpose of this lab
was to calculate the
reactance and
capacitance of two
capacitors when placed in
a circuit, through a series
of measurements and
calculations.
CAPACITIVE
REACTANCE
Laboratory report
Taylor Swift
DT0123
Contents
1.
Abstract.
07/10/2016
2
Common Forces and Newtons Laws
Imagine you give an object a push along a level surface. It travels a distance on its own before slowing
down to a stop.
stop
Applied
Force
Velocity , v
Which statement do you agree with:
A
the object has a natu
Mechanics DT066
21/10/2016
More examples
1
A car of mass 1500kg begins to tow a trailer of mass 500kg. The cars
are connected by a tow bar and travel along a smooth horizontal road. The car
has a forward acceleration of 1.8 m/s2.
Apply F m.a for each mass
1/27/2017
2.1
*See understanding mechanics chapter 9
Equilibrium of a rigid body*
General equilibrium conditions
Recognize different beam supports
Produce free body diagrams
Solve 2D rigid body equilibrium problems
A rigid body is defined as a body which
DT066 Mechanics
26/09/2016
1.
Position Vectors
Learning outcomes
Representation
Addition
Cartesian components
2D position vectors
3D position vectors
2D Force vector addition
A Vector quantity carries information about the magnitude and direction of
19/10/2016
Centres of mass & distributed forces*
5
The centre of mass/gravity a system is the single point at which the systems entire mass seems to act.
Example 1
Masses of 10 kg, 5 kg and 7 kg act at 2 m, 2 m and 1 m distance from O as shown.
The equiva
FULL WAVE RECTIFIER CIRCUITS
Student name(s):
Jawaher Taher
D16124651
D29
Voltage Measurements for a sine
wave
T
V peak
V peak to peak
Theory
Sine wave
Vpeak = Vpeak to peak/2
Vrms = Vpeak X 0.707 (AC voltage read by DMM)
The average value of an AC signal
Project:
Instrumentation for
temperature sensor
There are 2 parts to this assignment.
Build a circuit in order to condition the output of a solid state sensor.
Give a short presentation and demonstration of the finished circuit.
The presentations will run
Printed in U.S.A., Copyright 2000. Penton
Media, Inc. All rights reserved. Machine Design (ISSN 0024-9114) is published semimonthly by Penton Media, Inc., 1100 Superior Ave., Cleveland, OH 44114-2543. Copies
not qualified for domestic requester circulatio
simulating
REALITY
When f = Ku
An Introductory Guide to Nonlinear Analysis
simulating REALITY
Nature is nonlinear. Although, for our own understanding,
we often look to simplify the world around us, ultimately
we need to come to terms with the fact that n
MachineDesign.com: A closer look at Model Meshing
Page 1 of 7
Published 11/4/2004
A closer look at Model Meshing
Watch out You can get different results
depending on how you mesh the model.
Paul M. Kurowski
Design Generator Inc.
London, Ontario, Canada
pk
W H I TE
P A P ER
Understanding Nonlinear
Analysis
Overview
In this paper you will learn about the differences between linear and nonlinear analysis and realize there are optimum
times to use one type of analysis versus the other. We will discover that ne
DT022/4 Computer Modelling
Direct Methods
DT022/4 Computer Modelling
Direct Methods Bar elements
This section of the notes is concerned with the derivation of the stiffness matrix for a simple 2-node
bar element. Analyses involving these elements are call
DT022/4 Computer Modelling
Lab week 3
Mesh Convergence Testing using a Plate with Hole as an
Example
Finite element models should, if properly created, provide accurate results
for stress and displacement if there is sufficient mesh density to capture the
01/11/2011
Shape Functions
Shape functions & Stiffness
Matrix
u
u N 1 where
u2
N L x
L
x
L
Shape functions add up to 1 at any point; each function has
a value of 1 at its own node, and zero at other nodes
4
xy N i xyii
i 1
Shape Functions
N1
1
4
Shap
DT022/4 Computer Modelling
Practice Exercises
DT022/4 COMPUTER MODELLING
EXERCISES INVOLVING SIMPLE 1D AND 2D TRUSS ELEMENTS
Carry out exercises 1-5 on paper. Use excel (or matlab) for no. 6. These will be worked
through in class at a later time. This is
Contact
Contact
Question
What happens when two parts of a mesh occupy
the same space?
Contact
Answer
Without special intervention, nothing.
Contact
Parts simply interpenetrate
Elements have no awareness of other
elements
Contact
When parts do come
DT022/4 Computer Modelling
2014/15
MECH4012 COMPUTER MODELLING
FORMULATION OF GENERAL ELEMENTS USING STRAIN ENERGY
In this section of the notes, we consider the formulation of an element from a more general point of
view, using the concept of strain energ
Raising
the
Value
of your
Product Data
An
Raising
the
Value of your
Product Data
Business
TranscenData, an ITI Business
ITI Profile:
Founded in 1983 by Dr. Jason
Lemon
Revenue $34M
Employees 200
ITIs TranscenData provides interoperability solutions
throug
Solving nonlinear problems
Reading: Becker Chapter 8
Cook (4th ed)sec. 17.1-2
Solving Nonlinear Problems
Definition of Nonlinearity in terms of FE
solution:
Stiffness matrix [K] as formulated for the unloaded
structure is not valid for the loaded struct