looking for a material

[nikaul]

Hello,
I am looking for a material which when takes load behaves as graph attached. I would be really grateful if anyone can suggest the material.

Thanks

 

[BAretired]

How about a loose chain? Displacement continues until the slack is removed, then moves according to its modulus of elasticity.

BA

 

[BAretired]

Of course, it is not so good on the compression side.

BA

 

[msquared48]

Looks to me like something similar to a spring - dashpot - spring in series situation...

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[msquared48]

I could suggest a connection type that would do that, but not just a specific material.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[BAretired]

I think it is safe to say that no such material exists.

BA

 

[DCBII]

The first thing that came to my mind was a loose cable (similar to BAretired's chain), but then I thought "that's a system, not a material". I agree with BAretired. I've never heard of a material that can deflect without taking load and then all of a sudden become stiff when the load hits a certain point.

 

[msquared48]

I got it! Transparent Aluminum!

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[CANPRO]

not sure what your application is, but looks like you need a slotted connection...or some kind of yet to be discovered material as mentioned above.

 

[dhengr]

Is Viagra a material?

 

[DamsInc]

How about a sponge? It wouldn't offer 0 resistance, but in tension it would be very soft until the fibres were stretched out. In compression it would behave similarly until it was fully consolidated.

 

[dik]

A slotted connection is the only thing I can think of that will provide the tension and compression components...

Dik

 

[msquared48]

Same here dik.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[nikaul]

Thank you all for those suggestions.

 

[hokie66]

What about good old unobtainium?

 

[paddingtongreen]

Iron at the yield point.

Michael.
Timing has a lot to do with the outcome of a rain dance.