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@maxz • 26 Oct, 2009

Dear CEians,

I had a small project going onto my final semester subject. Its a about a Circular Plate attached to the shaft spinning at 1280rpm 1Hp Motor. After that, load being applied uniformly onto the Circular plate. The Diameter of the plate is 125mm and the load applied is at diameter of 100mm. Load of 50kN being applied uniformly.

As i know, the plate intertia is to be 0 or infinit (correct me if i'm wrong). and i got to found out this formula Mr=P(1+ν)log(R/r)/4π. and i dunno how to applied it to have the moments results.

I really have to idea how the calculation would be. Bending Moments of beam i would say yes, i can calculate. but for circular Plate, i would say NO. Any guide would be appreciate.

I had a small project going onto my final semester subject. Its a about a Circular Plate attached to the shaft spinning at 1280rpm 1Hp Motor. After that, load being applied uniformly onto the Circular plate. The Diameter of the plate is 125mm and the load applied is at diameter of 100mm. Load of 50kN being applied uniformly.

As i know, the plate intertia is to be 0 or infinit (correct me if i'm wrong). and i got to found out this formula Mr=P(1+ν)log(R/r)/4π. and i dunno how to applied it to have the moments results.

I really have to idea how the calculation would be. Bending Moments of beam i would say yes, i can calculate. but for circular Plate, i would say NO. Any guide would be appreciate.

@juma1987 • 27 Oct, 2009
Circular flat plates

Cross section size

A = pi R2

σ=0.39F/(t^2)

d=0.221F(R^2)/(E(t^3))

Ф=FR/(piE(t^3))

σ=0.24F/(t^2)

d=0.0543F(R^2)/(E(t^3))

σ=(0.48F/t^2)(1+1.3Ln(R/0.325t)-0.0185(t^2/R^2))

d=0.55F(R^2)/(E(t^3))

Ф=0.667FR/(E(t^3))

σ=(0.62F/t^2)(Ln(R/0.325t)+0.0264(t^2/R^2))

d=0.22F(R^2)/(E(t^3))

smax ≤ Sy / ks

ks ≤k

where F is the load, t the plate thickness, Ks the safety factor

Source: Autodesk Inventor Handbook

**Circular flat plates**Cross section size

A = pi R2

*Edge supported around the circumference, load distributed uniformly over the surface**Maximum stress*σ=0.39F/(t^2)

*Deflection*d=0.221F(R^2)/(E(t^3))

*Rotation at support position*Ф=FR/(piE(t^3))

*Edge fixed around circumference, load distributed uniformly over the surface**Maximum stress*σ=0.24F/(t^2)

*Deflection*d=0.0543F(R^2)/(E(t^3))

*Edge supported around the circumference, load concentrated at the center**Maximum stress*σ=(0.48F/t^2)(1+1.3Ln(R/0.325t)-0.0185(t^2/R^2))

*Deflection*d=0.55F(R^2)/(E(t^3))

*Rotation at support position*Ф=0.667FR/(E(t^3))

*Edge fixed around circumference, load concentrated at the center**Maximum stress*σ=(0.62F/t^2)(Ln(R/0.325t)+0.0264(t^2/R^2))

*Deflection*d=0.22F(R^2)/(E(t^3))

*Strength check*smax ≤ Sy / ks

ks ≤k

where F is the load, t the plate thickness, Ks the safety factor

Source: Autodesk Inventor Handbook

@maxz • 28 Oct, 2009
Dear Juma~!!!

Your guides is very useful to me. being finding this for a long time. Never know it can be found in Autodesk Inventor Handbook. Our Library is sucks. Thankz anyway.

Your guides is very useful to me. being finding this for a long time. Never know it can be found in Autodesk Inventor Handbook. Our Library is sucks. Thankz anyway.

@yadavundertaker mohit • 28 Oct, 2009

only crazy engineer can solve that so be regular on CE and help others also...

maxzDear Juma~!!!

Your guides is very useful to me. being finding this for a long time. Never know it can be found in Autodesk Inventor Handbook. Our Library is sucks. Thankz anyway.

only crazy engineer can solve that so be regular on CE and help others also...

@juma1987 • 28 Oct, 2009
ill be around ty 🎉

@maxz • 06 Nov, 2009
For the manual calculation part i'm done, and the result is quite satisfied...

But i need to compare it with my simulation testing using Inventor 2010...

How to apply this format into Inventor and simulate it... i have no idea...

I kinda more in Manufacturing and Management for engineerings... Hands on testing is weak for me.. Please help me...

Guides step by step would be much appreciate...

I tried to simulate follow the Help section in Inventor, but it is far different from wat i expected...

The value and the stress is to big compare to my manual calculation. thx

But i need to compare it with my simulation testing using Inventor 2010...

How to apply this format into Inventor and simulate it... i have no idea...

I kinda more in Manufacturing and Management for engineerings... Hands on testing is weak for me.. Please help me...

Guides step by step would be much appreciate...

I tried to simulate follow the Help section in Inventor, but it is far different from wat i expected...

The value and the stress is to big compare to my manual calculation. thx

@juma1987 • 06 Nov, 2009
well you can use the design acelerator formulas or use FEA, can you make a drawing of what u want with details and post here? so maybe i can explain the process to make it (if i know, and if i dont maybe someone that know it can help).

@maxz • 09 Nov, 2009
btw wat is design accelerator formulas??? where can i get it?

5.2k views

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