A symmetric two-legged yoke divides an axial load between its legs. Wider separation raises the tension needed in each leg. Explore the ideal balance between leg tension and the included angle.
Yoke Strap Interactive Calculator
Enter axial force and the included angle between equal legs. Compare ideal leg tension, the tension-to-load ratio and the lateral components.
Equation Used
- Inputs are user-supplied scenario values.
- The displayed equations are evaluated directly.
- Entered efficiencies, shares, limits and factors are not predicted.
- The visual is schematic and not dimensional.
- Strength, fatigue, wear, variation, controls and safety compliance are omitted unless explicitly calculated.
How the Yoke Strap Works
The axial components of the two leg forces add to support the load. Their opposite lateral components cancel for the assembly, although each connection still carries a lateral component.
What This Calculator Represents
The legs are symmetric and the load is centered. Zero net lateral load does not mean zero lateral force at each attachment. Leg strength, connection strength, bending, fatigue and uneven load sharing are not calculated.
Calculation Method
For load F and included angle θ, each leg tension is T = F / [2 cos(θ/2)]. The tension-to-load ratio is T/F. The sum of the magnitudes of the two lateral components is 2T sin(θ/2); their signed resultant is zero by symmetry.
How to Read the Result
Change one input at a time to compare its effect. Apply the assumptions stated beside the equations when interpreting each result.
Assumptions and Limits
The legs are symmetric and the load is centered. Zero net lateral load does not mean zero lateral force at each attachment. Leg strength, connection strength, bending, fatigue and uneven load sharing are not calculated.
Frequently Asked Questions
Why is net side load zero when spread force is not?
The lateral components point in opposite directions and cancel as a resultant. Each attachment still carries its own lateral component.
Does a wider included angle increase leg tension?
Yes, for a fixed centered axial load in this symmetric model. The axial component of each leg tension becomes smaller as the legs spread.
Is the drawing suitable for manufacturing?
No. It is a schematic explanation and does not specify manufacturing dimensions, tolerances or materials.
Do these results establish safe operating limits?
No. Assess the complete equipment, loads, materials, controls and applicable requirements separately.
References
Building or designing a mechanism like this?
Explore the precision-engineered motion control hardware used by mechanical engineers, makers, and product designers.
