How to Calculate the Force to Bend Metal

Properly bending metal is an art.
••• Jupiterimages/Photos.com/Getty Images

Metal is bent to make various products, fixtures and machinery. In fact, industrial and factory machinery often incorporate metal bending processes as a function of manufacturing. This bending and shaping is done according to designs and specifications where the machinery doing the bending must be programmed to apply the correct bending force. Calculating and determining the correct force involves factors and considerations such as the width and thickness of the metal and the diameter of the bending machinery.

    Determine the tensile strength of the metal sheet, or "T," in units of pounds per square inch. Refer to the metal documentation or specifications. As a example, assume T is 20 pounds per square inch.

    Determine the width of the metal sheet, or "W," in inches. Refer to metal documentation or specifications. As an example, assume W is 60 inches.

    Find the thickness, or "t," of the metal sheet in units of inches. Refer to metal documentation or specifications. As an example, assume 1.5 inch thick.

    Find the diameter of the die, or "D," used to punch the metal sheet doing the bending process in units of inches. Think of a standard V-shape bend, where a metal die strikes the middle of the metal to bend it in a V-shape. Refer to the documentation associated with the machinery used to do the bending. As an example, assume is D is 2 inches.

    Calculate bending force, or "F," using the formula: F = KTWt^2/D in pounds. The variable K is 1.33 for V-shape bending. The bending force will be in units of pounds. Using the example numbers above:

    F = KTWt^2/D = [(1.33)(20)(60)(1.5)(1.5)]/2 = 1,795.5 pounds

Related Articles

How to Calculate Fastener Pullout
How to Calculate Inches Per Minute
How to Calculate the Length of Cable on a Drum
How to Calculate the Grip Length of a Bolt
How to Calculate Coining Tonnage
How to Calculate Electrical Winding Wires by Weight...
How to Measure a Pipe Bend Radius
How to Calculate the Area of Steel
How to Calculate a Shock Load
How to Calculate Induced Armature Voltage
How to Convert a Load to PSI in a Tensile Test
How to Convert Seconds Into Miles Per Hour
How to Calculate Steel Gauge to Inches
How to Calculate Weight Per Linear Foot
How to Calculate Peak Torque
How to Calculate Linear Meters
How to Calculate Duct Airflow
How to Calculate the Weight of Wire Based on Gauge...