to find out the youngs modulous ............................. Smile
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Posted by: rarvind ®

01/23/2006, 22:24:35

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i have a flexible cylindrical part to be fabricated , the material has been finalised as polyurethane although im not quite sure wht grade of polyurethane to select .....
i would like to know how do i estimate the youngs modulous required to withstand equal load from all sides (similar to hydrostatic pressure ) acting on the cylindrical element ....
by considering that the element is made of a series of struts ..

the contraint is that i need to choose the most flexible material for the design .........









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Re: to find out the youngs modulous .............................
Re: to find out the youngs modulous ............................. -- rarvind Post Reply Top of thread Forum
Posted by: zekeman ®

01/24/2006, 22:03:42

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Why Young's modulus? You should be looking for strength.







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Re: to find out the youngs modulous ............................. Question
Re: Re: to find out the youngs modulous ............................. -- zekeman Post Reply Top of thread Forum
Posted by: rarvind ®

01/25/2006, 00:41:41

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yeah finding strength is also ok ... i need to just zero in on the material grade of polyurethane ........

there r 2 stages of problems

1 stage

im not sure how to exactly find the most flexible material grade for this .... because a sheet of this material will be folded into cylindrical shape ( with around 4 rotations like that of a calneder ).... so the material needs to be very flexible n should not break or undergo plastic deformation when folded .......

im not sure how to simulate this condition n find the right material .........

2 nd stage

and after that the element is subjected to compressive force ( the amount of force is unknown )equal from all sides .....
so i need to also design the cylindrcal element for this fatigue strength

............
any suggestions please .......








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