# Sheet metal shearing force calculation equations

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Read this article to get the detailed information about GATE ME Syllabus 2020. Knowing the GATE ME syllabus will help you to give your the best shot in the exam. Nov 26, 2012 · In SolidWorks while we make sheet metal part ,there are certain set of inbuilt formulas which the software uses to calculate the Flat length or the Development length of the part. Material Inside: Flat Length=Base flange Length+(2XEdge Flange Length)-(2XBend Deduction) Material Outside: The purchase of a press brake or a guillotine shear is an important investment which deserves a careful and deep analysis. Gasparini has always been able to actively meet the desires of the most demanding and advanced customers. Technical skills and design approach translating in new solutions for very high performance machines.

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Hitchcock’s equation (1935): where is the flattened but still circular roll radius in mm, is the original roll radius in mm, is the Poisson’s ratio, is the Young’s modulus of the roll in Pa, is the thickness difference in mm and is the roll separating force in N/mm. To calculate the force to punch holes in metal you determine the cross section in shear and multiply it by the shear strength of the metal. The formula is Perimeter times thickness times shear. For round holes in steel this is Diameter * PI * 30. Thirty tons being the approximate shear strength of mild steel plus an allowance for friction.

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