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Guys I borrowed the attachment from the web but I have a similar problem. I am trying to cal the bending stress of a circular disc but it is sort of different from the generic beam formula we use. I wonder whether we can still apply Bending stress = MY/I Thanks for all the help

Guys I have a timing system. Belt material: neoprene belt with reinforced glass Pulley material: aluminum ratio: 2:1 Run 1: 25 deg rh80%. No issue. System performance as per expectation. Run 2: 30 deg rh80%. out of 5 index position, 2 are off by 10 deg. Run 3: 25 deg rh80%. performance...

Guys I need some help over here. I have a timing pulley system driven by a timing belt with 2 pulleys with a teeth ratio of 2: 1 [Large pulley = 38T, small pulley = 19T]. I wonder whether in timing belt design, the ratio is dependent on the number of teeth on both pulley or the PD of both...

Guys Sorry to ask this stupid questions. When we size a stepper motor, we need to calculate the load inertia. However, if I were to use bearings and my load is driven by a timing belt system, how do I go about calculating the inertia of the bearings and timing belt?

Hello everyone I am considering between using a 2 phase single shaft stepper motor vs 2 phase stepper motor with gearbox. I know the advantages of the gearbox stepper are as follows: - 1) Torque amplification 2) Speed increase/ reduction ratio 3) Smaller resolution 4) Lower inertia ratio...

Hi I wonder if the inertia ratio for stepper motor is very high, what is the impact? Will there by mis-step?

I purchase a stepper motor with a coupled gearbox. The gearbox have a backlash of 1 degree. I wonder how I can reduce the backlash. If I run the motor only on 1 direction, will the backlash be eliminated?

Hi everyone I have some questions about the Fresnel eqn and I hope someone can help me. I have a light source [flourescent] light shining directly onto water. Part of the light will be reflected and part will be transmitted. I am trying to calculate how much light will be reflected and how much...

Hi Is there any way to calculate belt elongation over time assuming you have a fixed load? I am thinking of doing some experiment but end of the day, I wonder how I can measure the elongation considering the belt doesnt have a fixed shape.

Hi I am trying to design a filter wheel indexing system. I have a wheel that is sub-divided into 3 positions, 120 deg apart. This wheel will be driven by a stepper motor with a timing belt system with a ratio of 2: 1. I require the wheel to have positioning accuracy of +/- 2 steps. I face the...

Hi guys I am doing some stress analysis for my polycarbonate structure. From my understanding, von mises stress is used to analyze stress for ductile material. However, as all is aware, we need to consider the principle stresses which is also critical. I am wonder whether the von mises stress...

Hi I want to compare the stresses obtained from Pro-mechanica with respect to the material flexural yield stress. Which stress reading (von mises or max principle stress) should I use?