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# Deflection of Circular Plates

## Deflection of Circular Plates

(OP)
I am looking for the expressions that gives the deflection and stress at any radius r for a circular plate of diameter D (radius R), and thickness t, CLAMPED around its circumference, subjected to a centrally placed concentrated IMPACT load P.

### RE: Deflection of Circular Plates

Roark's indeed has this case, but you'll need to know the value of the impact load as this is the most variable parameter in your system.

### RE: Deflection of Circular Plates

You can get some help with the impact from Roark as well. See section 15.3 in ed 6 or 16.3 in ed 7 on "Impact and Sudden Loading".

### RE: Deflection of Circular Plates

(OP)
Thanks, guys - metenger, kingneroand RPstress.

Kingnero, I know the the impact loads. I was doing a series of experiments. I have the impact loads and the central deflections. What I need is the formula that links the two - i.e. calculating the deflection given the load and the stress given the load. Could you assist if you have the book? I do not have it and it will take me a while to purchase (which I will) in my part of the world. Regards.

### RE: Deflection of Circular Plates

(OP)
Thanks, bro. I have also been hunting for the book and got the 7th Edition in pdf from colleagues in England. We live in a small world don't we. Have a great day, afternoon or evening, whatever your time is. Mine is 8 p.m.

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