Weld Force Calculator, Formula, WF Calculation

Weld Force Calculator

Enter the values of weld area, WA_(in2) and weld stress, WS_(lbf/in2) to determine the value of weld force, WF_(lbf).

Weld Force Formula

Weld force refers to the force exerted by or on a weld joint, calculated based on the cross-sectional area of the weld and the allowable or expected stress on that weld.

Weld force, WF_(lbf) in pounds-force is equated by the product of weld area, WA_(in2)

In square inches and weld stress, WS_(lbf/in2) in pounds-force per square inches.

Weld force, WF_(lbf) = WA_(in2) * WS_(lbf/in2)

WF_(lbf) = welf force in pounds-force, lbf.

WA_(in2) = weld area in square inches, in².

WS_(lbf/in2) = weld stress in pounds-force per square inches, lbf/in².

Weld Force Calculation:

1. Determine the weld force for a joint with a weld area of 0.5 in² and an allowable weld stress of 70,000 lbf/in².

Given: WA_(in2) = 0.5in², WS_(lbf/in2) = 70,000lbf/in².

Weld force, WF_(lbf) = WA_(in2) * WS_(lbf/in2)

WF_(lbf) = 0.5 * 70,000

WF_(lbf) = 35,000lbf.

2. Assuming we have a weld force of 30,000 lbf acting on a weld area of 0.6 in², find the weld stress .

Given: WA_(in2) = 0.6in², WF_(lbf) = 30,000lbf.

Weld force, WF_(lbf) = WA_(in2) * WS_(lbf/in2)

WS_(lbf/in2) = WF_(lbf) / WA_(in2)

WS_(lbf/in2) = 30,000 / 0.6

WS_(lbf/in2) = 50,000lbf/in².

How to determine the design weld resistance, and the required length of welded connections