Open Club  ·  134 members

this club is going to help you to understand the kinematics of machines, we will also discuss the different types of mechanisms. it also provides the tips to groom your personality. just share your knowledge and help the others to learn and make the world develop.

Club Types

Engineering subjects
1. What's new in this club
2. Kinematics of Machines

Hello sir, i need an PDF or PPT files about Kinematics of Machines to Study for the both Z-Kinematics and U-Kinematics. If Possibles please share the files through Mail Mail id :kabilmech66@gmail.com Thank you Best regards....
3. New Post at Mechanics Corner

Be sure to check out the new post at Mechanics Corner. It poses a challenge problem for each of you to work on. Do you really know kinematics of machines? Find out!! Try the simple problem posted over at Mechanics Corner now. DrD
4. Triple Rocker

I was able to answer my own question. The result is posted at the Mechanics Corner, so please read it there. DrD
5. Triple Rocker

In terms of four-bar linkages, most of them obey Grashof's Law, but evidently a few do not. Those that do not are called "non-Grashofian" or "triple rockers." I have a difficult time visualizing a triple rocker. The name implies that no link can turn a full revolution. Can any of you point me to an example, a problem discussion, or any other information regarding a Triple Rocker linkage? DrD

7. weighing machine

For starters, we might consider just what sort of "weighing machine" you have in mind. There are basically two types: 1) the beam balance, where the position of a sliding block is adjusted to the point where the moments on the beam are in equilibrium; 2) the force cell (usually a strain gage device) that is actually a spring scale with a very stiff spring. Either of these can be calibrated in either force or mass units, but they operate on different principles (or do they?), so do they measure the same quantity? DrD
8. weighing machine

You probably right, I don't know actually.
9. weighing machine

alright but you know if we stand on the weighing machine, we affected with the gravitational force and gravitational force pulls us at that time. so don't you think it will be our mass as well as gravitational force? which will lead to our weight.
10. weighing machine

Mass. Because the machines are (by law) annually calibrated by standard mass that was kept by Government Metrology Bureau. There are no such thing as standard weight.
11. weighing machine

what does a weighing machine measure our weight or mass?
12. attempt quiz

hey, guys!!! attempt the previous quiz. I will come up with the new quiz soon.

14. activity in the group

hi, everyone! hope you all are doing well. guys i would like to encourage you all to post your doubts and help others. you can also provide some new researches and information about kinematics of machines. this is your group and you all are of part of it. thank you
15. Other Clubs Long Ago

As I see this club (Kinematics of Machines Club) sit here and do nothing, I am reminded of other clubs from long ago. When I was a small boy, long, long ago, clubs were very popular. The typical "club" would start when several guys would build a "club house" in someone's yard. It was usually just a lean-to type structure, often a roof and one wall up against a garage wall or a fence, but it was to the center of all our activities. We would usually work feverishly for the better part of a day building the "club house." The wall and roof might very well be cardboard, a few tree branches, maybe a piece of corrugated sheet metal. We put a lot of ingenuity and effort into building our club house! Once it was finished, the big question always came up: What are we going to do now?? Sometimes, it would be proposed that our purpose was to fight other gangs in town. The biggest problem with that was, there were no other gangs that we knew about, so who could we fight? Along with that, there was always the risk that we might get hurt, perhaps even loose the whole fight and get beat up. Most of us were rather risk adverse! So, what were we going to do now? The only unifying thought that always came up was this one: We were going to keep the girls out (remember, this is a group of boys, roughly 6 to 10 years old!). Keeping girls out was obviously a priority, but we usually thought that an exception should be made if anyone's mother wanted to come in. Remember, mothers are not girls, even if there is some similarity, or so a group of small boys would reason. The whole thing would usually end when the father of the home where the club house was built would say something like, "I want this mess cleared away by the end of the day on Saturday." A few of us would dismantle the club house and pile it with the trash to be carried away while other members of the club simply vanished. With all the current activity in the Kinematics of Machines Club, and with its evident lack of purpose, I think I see a lot of parallel with the clubs of my childhood. The question in my mind now is, "When will we get the order to clear this mess away?" DrD
16. Is this club going anywhere?

Is this club going anywhere? Where is out leader, the club owner? What does he do if not provide leadership and direction? I ask again, is this club going anywhere? DrD
17. New Blog Post

When you ask about IT, I presume that is the same IT I spoke about when I wrote "Where would you publish IT"? Is that what you had in mind? For the blog post, I had not particular thing in mind, but most probably a technical paper presenting some sort of engineering solution. It could also be a book, but for that, it is a bit easier to locate a publisher. DrD
18. New Blog Post

Is it a Book?
19. New Blog Post - Rocket Homework Problem

Over at Mechanics Corner, there is a new problem posted involving a rocket on a launcher. This is made to order for folks interested in Kinematics of Machines, so be sure to go read the post and solve the problem. DrD
20. New Blog Post

I would like to encourage all members to read my latest blog post over at Mechanics Corner. The title is Where Would You Publish It? Check it out!! DrD
21. Simple Machines

Now you can take the quiz. Sorry for the inconvenience. It was a technical error. And you Always looked smater.
22. Simple Machines

Quiz author has to click button .. "Allow playing" .. this is because ..he has added 7 questions and the quiz is not ready -- may be he is adding 3 more questions... once he click on allow playing.... the quiz be open for every one .... And I can see - he has added quiz but nit added any questions......
23. Simple Machines

Does design failure grade on a curve? DrD
24. Simple Machines

There are some stinkers who blow the grading curve
25. practical usage

Oh dear! This is really going to be exciting. So much like the questions that have flooded this site recently, questions of the sort "what is the difference between a dog and a cat?" Well, duh .... Kinematics is rarely an end in itself. It is a tool used to address other questions. For example, rarely do we want to know a velocity or an acceleration simply for the sake of the velocity or the acceleration. It is usually more a case of wanting a velocity in order to establish a travel time, or to formulate the equations of motion by an energy method. So the goal is not the velocity, but rather something else, but it is kinematics that enables us to reach that goal. Similarly for accelerations. One of the most common reasons for wanting an acceleration is to calculate the forces acting in a system in order to evaluate the strength required, but it is kinematics that enables us to reach that ultimate goal. There are a few situations where kinematics is the goal in itself, particularly where the path of a point is the objective. Think for example of the motion of the cam follower as related to the shape of the cam. This is a purely kinematic question as long as we assume that all parts are rigid. But even there, we often need to do a radius of curvature calculation in order to make the contact stress calculation to evaluate the possibility of surface failure. Kinematics rarely stand alone, but it is often the first critical step in answering an engineering question. DrD
26. Simple Machines

There is a message in red that says, "You Cannot Take this Quiz." Why is that? What sort of system is this where only a select few can play? Or are you simply trying to avoid embarrassing me, afraid that I will look foolish? DrD
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