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# Compression and Forming Forces

## Compression and Forming Forces

(OP)
Trying to give an example to a co-workers about compression. Imagine a piece of metal that requires 10 lbs to be formed. Currently his setup has a 10lb actuator on one end and a fixed wall on the other. He wants to change this to 2, 10lbs actuators opposing one another. I'm trying to explain the free body diagram to him with little luck. Any way you could help me explain this to him.

### RE: Compression and Forming Forces

One way that i found it to simplify things when it would be the same with a symmetry boundary is:

Imagine putting a piece of paper in the middle of your problem. Would the paper move from what is happening? If not then you have a symmetry boundary. Opposing equal forces is probably as simplified as it gets.

Imagine two bullets flying in the air. Whats the difference if they hit eachother with a paper in between or if one of them hit a steel wall?

The only thing he would achieve is 50% shorter actuation length and possibly a quicker forming time.

Your forming operation could be unsymmetrical and you would get less deformation on certain pieces if you have opposing actuators though. Perhaps youtube has something on symmetry :)

Cheers

### RE: Compression and Forming Forces

hi
A sketch of what you are describing might help us to understand and consequently help you.

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

### RE: Compression and Forming Forces

My question what is being formed between the actuator and the fixed wall?

### RE: Compression and Forming Forces

Try playing with a scale, a weight and and actuator.

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