This lecture discusses rigid bodies and their degrees of freedom. It begins by defining a rigid body as one where the distances between points remain fixed during motion, unlike a flexible body. A planar rigid body confined to two-dimensional motion can translate in two independent directions (x and y) and rotate about a single axis, for a total of three degrees of freedom. If a point on the rigid body is fixed with a pin, only a single rotation is possible, reducing the degrees of freedom to one. Allowing the pinned point to also translate provides two additional degrees of freedom for its motion. Understanding degrees of freedom is essential for writing and solving equations of motion for rigid body systems.
This presentation is about rest and motion in which we study the three types of motion (Translatory motion, Rotatory motion and Vibratory motion) with their examples.
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This presentation is about rest and motion in which we study the three types of motion (Translatory motion, Rotatory motion and Vibratory motion) with their examples.
Stay focused on our YouTube channel for latest updates on study based on science.
To join Class 10 Science for free, click on the following link
https://classroom.google.com/c/MTUyODc2NDg0Mjgw?cjc=rz3dcdi
To join Class 9 Science for free, click on the following link
https://classroom.google.com/c/MTMxODc4MTg1NjQy?cjc=6rsjb33
If you like the vedio then please click on like button and subscribe the channel
For any doubt and query you may contact us at
vinaykumarmaurya2005@gmail.com
vinaykumarmaurya17852004@gmail.com
Feel free to contact us. We like to help you
THIS PPT IS A VERY INFORMING PRESENTATION ON MOTION
TOPIC WITH THE EXAMPLE OF DAILY LIFE:.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................AAAAANNNNNDDDD MMMMMAAAAANNNNNYYYYY MMMMMMMOOOOOORRRRREEEE
this ppt is based on the physics chapter: force and pressure.
you can also see the other chapters on youtube
https://www.youtube.com/watch?v=nejarAzn76A
THIS PPT IS A VERY INFORMING PRESENTATION ON MOTION
TOPIC WITH THE EXAMPLE OF DAILY LIFE:.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................AAAAANNNNNDDDD MMMMMAAAAANNNNNYYYYY MMMMMMMOOOOOORRRRREEEE
this ppt is based on the physics chapter: force and pressure.
you can also see the other chapters on youtube
https://www.youtube.com/watch?v=nejarAzn76A
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
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• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
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Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
1. Engineering Mechanics
Prof. Siva Kumar
Department of Civil Engineering
Indian Institute of Technology, Madras
Lecture No: 1.1
Statics
Planar Rigid Body
Hi. In this particular clipping lets try and understand what a rigid body is, how do we
determine the degrees of freedom of a rigid body. Before going in to details lets just look
at how do we describe the motion of a particular body. I have this watch over here. It has
a strap, just I am going to remove it for you to get an idea. If I look at this; this watch has
a motion that I can describe. In addition it can also be very flexible or in another words
each point of this body can move relative to each other. We call this as a flexible body.
On the other hand supposing I take a body like this and I want to describe the motion of
this body. Let’s say it is moving like this. If you look at it, whatever be the kind of force
that we apply on this reasonable, you don’t see that much of deflection that much of
motion between the points of the body. For all practical purposes, I can define this body
as a body whose lengths remain intact while in motion. In other words we call such a
body as a rigid body. In this exercise we will just look at only the rigid body. Now the
rigid body can move like this, move upwards. It can move towards me or away from me,
it can rotate about an axis which is pointing towards you. It can rotate about the
horizontal axis and it can rotate about the vertical axis. So there are 3 translations and 3
rotations possible in a general rigid body.
(Refer Slide Time: 03:09)
2. In order to make understanding clear, let’s say reduce that to a body that has lesser
number of ways of motion. For example if I take this board and a body on this board
attached to this board and if I want to describe this body, let’s say it’s a rigid body. There
are three ways in which it can move. It can move horizontally like this, it can move
vertically like this or it can rotate about an axis. So in a planar rigid body, I can expect a
two translations and a single rotation. One of the important points to note here is if I have
to describe the vertical motion that is completely independent of what is happening in the
horizontal motion. For example if it is going like a wave and if I have to describe only the
vertical motion, it no way affects the horizontal motion or in other words two translations
that I describe are independent of each other. I am going to add one more term over here,
2 independent translations and an independent rotation. This word independent is a very
important addition to it.
(Refer Slide Time: 04:48)
In all it is possible to have three quantities which are independent that can describe the
motion of rigid body like this. We call this as three degrees of freedom. Are you with
me? In general what we say is for a planar rigid body, there are three degrees of freedom
possible. If I have to draw body here, as I describe there is a possibility of motion in this
direction. Let me just use horizontal and vertical directions as two independent quantities.
Let me call this as x and this as y. The displacement in the x direction, let me call as u
and the displacement in the y direction as v and there is a rotation possible let’s say theta.
I am going to just say rotation theta. There are degrees of freedom that I can use. One is a
translation u, one is translation v under rotation theta.
3. (Refer Slide Time: 05:24)
Given these three values I can tell you the position of this particular body that I have.
What are the other important things? I have to have particular frame that I define for what
is zero displacement in x direction, what is zero displacement in y direction, what is zero
rotation that we have defined here. Say we have an origin which specifies zero
displacement in x and y direction and the horizontal axis can be taken as a reference axis.
If I have the body here and if I draw this axis on it and let’s say it gets attached to this. So
let me call this as o. I take this and I attach it over here and then start to define the
displacement in horizontal direction and vertical direction and its rotation.
(Refer Slide Time: 06:30)
4. It is possible to describe the motion of this planar body on this board completely. This
basically tells us that if I have a planar rigid body, I should expect a maximum of three
degrees of freedom. Let me explain a little bit more. This is the rigid body that I am
looking at. This is the planar rigid body and it can move anywhere like this. It can also
rotate as we have already talked about it earlier. Let me just take a point here. Mark it as
say a. Now if I fixed this with the pin, how many degrees of freedom will it have? If you
look at it, the only way I can move this body is by rotating it. Forget about the planar
motion, it’s only the horizontal motion that to a rotation that is possible.
One way of describing any point on this rigid body is with respect to this particular point
a, I can define motion of any other point on the body by simply knowing the amount of
rotation it has undergone with respect to an axis. If this is an axis, how much rotation it
has undergone. Every point will have undergone the same rotation which is an important
idea to remember. The other distance that you have to take care of in order to know how
much motion is occurred is a fixed point. The distance between that point and let’s say
another point that I choose over here does not change during this particular motion. Or in
another words if I fix a point on the rigid body, the only way it can move is by rotating
which means it reduces to one single degree of freedom that I have to define in order to
understand the motion of this rigid body and mind you this is all with respect to a point
that I have fixed.
(Refer Slide Time: 09:47)
Now supposing I let this particular point to move around. I am just going to do like this.
If I let this particular point move around and then also rotate about this. Since I have
already defined the rotation of this particular body with respect to a. The additional
degrees of freedom come about by looking at the motion of this point a. How many
degrees of freedom are possible? Two degrees of freedom are possible for this particular
point a to move around. This we already know because a particle has two degree of
freedom, one in x axis, the other along the y axis.
5. Once we have this concept, we will move on to the system of rigid bodies. So that we get
an understanding of how to define the degrees of freedom. This is very essential before
we go on to understanding how to write the equations of motion to solve the problem.
Thank you.