Recent content by acc0untnam3

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    How Much Torque Can a Stepped Shaft Withstand Before Shearing?

    Thanks for both of your answers - I was after the Torque that would lead to shearing of the material. Problem solved :)
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    What is the relationship between motor torque and force applied by a robot arm?

    Hi, The force that the arms would exert is equal to to the torque of the motor divided by the distance from the motor to the point of contact (F=T/d) Depending on the angle (anything that isn't verticle), the torque would be effected by gravity. For example if the robot weighed 10kg and...
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    What weight is needed to keep a relief valve closed at 10 psi on a large vessel?

    Hi, You need a pressure of 9.5psi to keep the valve shut (difference in pressure). Using F = P*A and W = F/g I get a weight of around 1075lbs. Seems a lot but it's quite a straight forward calculation - you have a large area that the pressure is acting on.
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    How many Watts do I need to heat this pipe?

    Hi, The following equation might help. q = 2 π k (ti - to) / ln(ro / ri) (1) where q = heat transferred per unit time per unit length of cylinder or pipe (W/m, Btu/hr ft) k = thermal conductivity of the material (W/m.K or W/m oC, Btu/(hr oF ft2/ft)) to = temperature outside pipe or...
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    How Much Torque Can a Stepped Shaft Withstand Before Shearing?

    Hi there, I'm trying to find a solution to a problem that I thought was straight forward, but am now struggling with. I've got a shaft with a fixed end set up, where there is a small diameter fixed and then it steps up to a larger diameter which is having a torque applied to it. I'm...
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