Eccentric Bolt Group Shear Calculator
Distribute an in-plane force and centroidal moment across an equal-stiffness planar bolt group.
YOUR CALCULATION
Result
—
Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
Use the arithmetic bolt centroid and superpose equal direct shear with elastic rotational shear.
Bolt force=total force/N+(M/Σr²)×(−relative y,relative x)
Worked example
A centered force and zero moment gives each of four equal-stiffness bolts one quarter of the force.
Assumptions and input details
Two-dimensional linear elastic in-plane shear sharing, coordinate pairs and nonzero group polar sum. Enter moment about the centroid, including any force eccentricity once only. No bearing, slip, bolt strength, weld model or safe capacity.
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
Place equally spaced points on a circle. Calculate every coordinate, angular step, adjacent chord and arc length, with a labelled layout.
Calculate the center of mass of a list of point masses in three-dimensional coordinates, with distances from the combined center.
Enter two three-component vectors to calculate their sum, difference, dot product, cross product, magnitudes and angle, with an XY-projection diagram.
Reserved advertising space.