# How to Calculate Force to Bend Metal - Formula, Example

## How to Calculate Force to Bend Metal - Definition

This tutorial explains how to calculate the bending force of a product.

#### Formula:

BF=(safetyfactor*kfactor*ultimatestrength*bendlength*thickness2)/dieOpening Bending force(tons)=BF/2000 Where, die opening = thickness*die ratio kfactor        = 1.46-(0.016*die ratio) BF              = Bending Force
##### Example :

The thickness of a sheet is 3 cm, die ratio=6, bend length=3, tensile=4, factor of safety =4 Calculate the v-bending force of the sheet.

##### Given :

sheet thickness = 3

die ratio            = 6

bend length      = 3

tensile              = 4

Factor of safety = 4

V-Bending Force

##### Solution :
###### Step 1:

First, let us calculate the v-bending force. Substitute the given values in the formula,

BF=(safetyfactor*kfactor*ultimatestrength*bendlength*thickness2)/dieOpening

BF=(4*1.364*4*3*32)/18

=32.736

###### Step 2:

Now, let us calculate the v-bending force in tons. V-Bending force(tons) = BF / 2000 = 32.736/2000 = 0.02

##### Result :

V-Bending Force(BF) = 32.736 V-Bending Force(tons) = 0.02