Doese any one know of an mechanical engineer?

[Uddalok Biswas]

Hello

I am looking for mechanical engineer that can estimate the output of my mechanical system. My system is compound bow design I did. Compound bow is cantilever spring system with a wheel axle pulley bending the limbs. I need some one to estimate the power. They can use any tools like matlab, simulations,  pure math, or etc. Can some point me to some one credible that does this.

Thanks

[Matias Correa]

13 hours ago, Uddalok Biswas said:

Hello

I am looking for mechanical engineer that can estimate the output of my mechanical system. My system is compound bow design I did. Compound bow is cantilever spring system with a wheel axle pulley bending the limbs. I need some one to estimate the power. They can use any tools like matlab, simulations,  pure math, or etc. Can some point me to some one credible that does this.

Thanks

I believe it would be beneficial to use free body diagrams, leaving all the components separated with their force vectors, in this way you can calculate the force exerted by the various elements, for example, accelerations. 

Having separated the elements with their respective strengths, you will be able to carry out an engineering analysis with greater understanding and depth.

You can search for this topic on the web pages under "Diagram of the free body"

 

Greetings

[Code Code]

Thanks Matias Correa,

This is a topic I'm also interested in "Diagram of the free body".

 

[G B Reid MIMechE]

There's a lot more to this Code, 

The pulley system on a compound bow is a series of cams - not pulley wheels - that are designed to use "mechanical advantage" to take the strain off of the archer, allowing more precise targeting by reducing arm shake.

the sizes and materials of each of the layers would need to be know, the base draw weight (as a corroborator), the cam offset etc etc.

It would be an interesting modelling project, but a surprisingly complex one.

Your first step would be to measure the plain draw-weight. do this with a load cell of some form (spring balance, luggage scale, heavy duty scale etc). measure the item tip to tip. sketch up and measure the laminates, measure the wheel offsets, and positions. if it is a physical item, a photo or two will help.

Once you have all this detail, produce a sketch and then re-upload and hopefully someone (possibly even myself...though that's subject to workload) may pick it up for you.