Virtual wall stiffness value's 1

[321GO]

Hi Guys,

Simulate a flange support with a virtual wall.

Now, how does one calculate the stiffness of this wall?

E/t [N/m^3] is suppose to be the axial stiffness, where t is the wall thickness. Can one clarify this somewhat?

Can i also retrieve the stiffness with a test model? Suppose i would load a similar setup and measure the compression?

Would the stiffness then be: Stress / compression distance?

 

[GregLocock]

Apply a unit force at each bolt location on the wall. measure the deflection.



Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[321GO]

Greg Locock,

what do you mean with unit force?


Thanks you in advance.

 

[kellnerp]

Unit Force = 1 N or lbf in the direction of the load. The concept is right out of any structual design text.

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[GregLocock]

Actually it isn't that simple is it? There'll be cross coupling between the deflections at each bolt.

Often it is worth modelling the attachment as well as the test item.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

[kellnerp]

I think the OP needs to share more about what he is trying to model and what result he is after.

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