Questions tagged [friction]
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Friction Clamp/Brake Conundrum
I'm trying to calculate the amount of torque I need to put into my braking mechanism in order to hold up a weight. The weight is 18kg at the end of a 170mm arm. this should result in an approx. 30Nm ...
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Bolted plate static and dynamic friction explanation
I will not go into the exact details of the engineering problem. Still, I kindly ask for some help with a proper explanation because I am having trouble explaining the correct principle in this ...
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Why do engines with cylinder offset not suffer from increased frictional losses on the compression and exhaust strokes?
I recently watched the D4A YouTube video on cylinder offset, and for the most part it makes sense. Longer power and intake strokes, lower frictional losses on the power and intake strokes, greater ...
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If building a DIY screw jack, would it be beneficial to add a gimbal to the jack nut, and/or to the screw attachment?
The screw jack will be used twice daily.
It will be made out of M24 8.8 grade threaded rod and nut.
The nut will travel 300mm, to raise a weight of 50kg by 800m, via a pivoting lever arm.
The parts ...
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Friction force between two wheels at constant rpm
I have two tangent wheels pinned at their centers /which coincide with the center of mass/ and torque is applied to one of them (both roll without slipping). I want to find what force would they exert ...
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Belt conveyor roller spring
I wanted to know if anyone could help in this area.
I want to create an inclined conveyor belt where, when a cargo box reaches the top of the conveyor belt, the rollers sequentially move down (maybe ...
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How does the mechanics of left-handed scissors differ from right-handed/standard scissors?
So I've read that my right hand with a left-handed scissor "pushes the blades apart" (same with my left hand with right-handed/standard scissors), but I couldn't find out why this happens or ...
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Self Locking Brake Question
I've been staring at this problem for statics for quite a while now and I just don't understand it. The question states:
"The brake is to be designed to be self locking, that is, it will not ...
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Friction coating aluminum parts in lieu of anodizing
I have an application, 6061-T6 aluminum cylinder, and piston - approx 6" dia for both, O-ring on position. The piston is under 80-100 psi, room temp and stroke are a couple of inches.
Typically, ...
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Will this pulley system work?
I want a system to move something in the opposite direction to the driven thing, but twice the distance. I'm thinking the below system of pulleys. I just wonder if it will actually work or will it ...
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Pivot Point with Low Friction
Inspired by this question, I am looking for a low-friction pivot for a clock pendulum. The design uses magnetic repulsion to keep the pendulum going. A magnet is attached to the bottom of the pendulum ...
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What would be the Force Balance on this situation:
I'm struggling to find the correct Force balance in the following situation:
The black parts are hard stopers.
The blue part is moving perfectly aligned with the Y-axis in the negative direction.
The ...
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Why is friction problematic on small mechanisms with multiple parts?
This recent video concerns scaling down a nerf gun. Apparently a major problem (mentioned at 2:46) is the fact that friction "multiplies exponentially". Can someone explain more precisely ...
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Minimum power required to drive a vehicle with a Swedish type omni wheels
I'm trying to find the minimal power needed to drive an omidirectional 3-wheeled robot. I already asked in Robotics Stack Exchange and they didn't respond yet.
From the equation $P=Fv$ I know I need ...
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How can I reduce noise from pushrods in an assembly without using grease/oil?
I have an assembly which consists of a row of vertically-oriented nylon pushrods (each 5/16" in diameter, colored green in the attached pictures), and two black pieces of laser cut delrin ...
