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Questions tagged [mechanical]

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0 votes
1 answer
74 views

Failure criteria for CFRP single plate bolted joint

Which equation can be used to find failure based on ply orientation. Tension,shear & bearing faliure to validate against fem analysis
SACHIN SAJIKUMAR's user avatar
0 votes
0 answers
25 views

How does the retrofit mechanical system work in the rear brake pistons of cars (dual hydraulic + mechanical)?

I discovered recently (when changing the rear brake discs/pads of a car) that the piston cannot be pushed back without setting a rotation to it in the same time. This is due to the dual system with ...
user1556814's user avatar
0 votes
2 answers
976 views

How can I understand shear flow in a beam cross section?

I am trying to understand shear flow and I am just not getting it. For example, one of the problems in Beer has an I-beam and there is both a horizontal and vertical force acting on it. So it has ...
Karlton's user avatar
  • 21
0 votes
1 answer
135 views

Clarification of a piston and crank dynamics question

Yesterday, I had an Engineering Mechanics exam which involved a Piston and a Crankshaft engineering dynamics problem, which I was a bit stumped about. I sought clarification from the teaching staff ...
AVelj's user avatar
  • 153
0 votes
1 answer
96 views

Is there a geometry that meshes exactly with a rope?

I'm in a use case where the outer surface is a gear driven by a motor (that's the easy part) and the inner surface meshes with a metallic (iron) rope. When the part rotates, I want the motor and ...
ywa1n's user avatar
  • 23
0 votes
0 answers
31 views

What are the different ways to measure mass, for mechatronics

I’m trying to build a small mechatronic device and want to know the different ways of measuring mass. The ones that I’ve found so far are vibration and directly measuring mass using weight or a scale.
Natasha's user avatar
0 votes
0 answers
82 views

Why were handcuffs ever made with a chain between them?

I've noticed that modern handcuffs are always attached directly to each other, without any "chain" of any length in between. I guess I can understand why that make them safer and more robust....
Gobel Lue's user avatar
2 votes
2 answers
59 views

What would I search for to find a combination of a cap screw and a set screw?

I'd like a (hex) cap screw that at the non-head end has a (smaller) keyed opening, allowing tightening the screw from the inserted end (because the screw will be into a threaded hole with an open end, ...
chrisb2244's user avatar
1 vote
1 answer
96 views

What type of ball bearing is this?

I don't have engineering background. I'm looking for this telescope' altitude bearing below. I understand it's a type of ball bearing, but does anyone know the exact name of this type? There are 2 ...
Motoko's user avatar
  • 111
0 votes
2 answers
298 views

Incremental rotation that snaps in place

I'm developing a board game and it needs a mechanism of incremental rotation in which the rotated object will snap to one of five possible angles. I have been trying to search for examples of ...
user44109's user avatar
1 vote
2 answers
62 views

Connection to periodically electrify equipment

I am designing a system where I have a set of 4 electrical components rotating in a circle. In the bottom stage, the electrical component is submerged in water. In the top stage, the electrical ...
Georgije Stanisic's user avatar
0 votes
1 answer
188 views

How to make a circle spin from the edges

I have an issue where I need to make a large wire through a bearing spin in 3" diameter circles, and have a weight hanging from the bottom of the wire. Essentially, I need a hole that moves in a ...
Georgije Stanisic's user avatar
0 votes
1 answer
519 views

I need a coaxial gearbox that translates reciprocating clockwise & counterclockwise rotation to unidirectional while increasing speed of rotation?

I am a noob engineering student. I want to design a coaxial gearbox that takes an input shaft that rotates reciprocally (clockwise then counterclockwise) and increases the speed of rotation ...
Dev1's user avatar
  • 1
0 votes
2 answers
53 views

Between the front wheel and the rear wheel, what is good for maintaining speed? [closed]

A car weighing 13,000 N is driving at a speed of 50 km/h, overcoming a resistance (Fd) of 450 as shown in the figure. If the coefficient of friction between a wheel and a road on a frozen road is 0....
hhhujj's user avatar
  • 1
0 votes
0 answers
167 views

Designing a grabber

I designed a grabber for grabbing strings and yarns. the movement that I need is straight up and down to grab a piece of yarn. I wanted to know if this model (in the video) works in real life or not. ...
amirhosein majidi's user avatar

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