Force Calculation in deflecting a sheet metal part

AI Thread Summary
To calculate the force required to deflect a sheet metal part, the discussion emphasizes using beam bending calculations if the U portion is constrained and bending occurs between specified points. A formula for deflection involving load per unit area and material properties is mentioned, but the user reports unsatisfactory results. Clarification on the assumptions regarding the part's constraints is necessary for accurate calculations. Alternative formulas for deflection of a fixed flat membrane are sought, indicating a need for further exploration of applicable methods. Accurate force calculations depend on precise understanding of the part's configuration and constraints.
sree67
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Hi

Could anyone help me in calculating the force required to deflect a sheet metal part (see attached excel file for details)
 

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Hi sree. I've attached your spreadsheet with a couple of questions. If the U portion is constrained such that it doesn't move much, and if all the bending is occurring between the dimple and the point indicated, then this is a simple beam in bending and you can use the calculation on the second tab to determine stress, load and deflection.

If those assumptions are incorrect, then you'll need to clarify how this part works.
 

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Thanks Q Goest. Appreciate your help. Your input has helped a lot.
 
hey hi .. what formula for force calculation can be used inorder to deflect a simple flat membrane provided the opposite edges are fixed.
actually i used this one .
deflection = -alpha *load per unit area* length^4/E* thickness^3
but I am not getting desired results
is there any alternate formula for it ??
 

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