Hi guys,(adsbygoogle = window.adsbygoogle || []).push({});

I'm studying my first semester in engineering, I was giving the first assignment in my material science class which I'm not so sure on how to get started on.

The assignment was to ask us to design a aluminum rod which has the following specification:

1) Withstand an applied force of 200kN

2) Maximum allowable stress on the rod is limited to 170Mpa with a strain of 0.0025mm.mm^-1

3) Rod must be at least 3.8m long but deform elastically no more than 6mm when force is applied

I was thinking of a "I" shape rod, but am not sure were I on the right track or what should I include (e.g. width, depth, and shape) to sufficiently uphold the conditions.

Secondly can someone please tell me how do I convert load-guage length to engineering stress and strain?

Thanks,

Phil

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# Desining a aluminium rod

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