For Educators · Mohr's Circle
Mohr's Circle for a bridge girder
Built for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs. Simulate a bridge girder live below — adjust the inputs and watch it respond, right in your browser.
Mohr's CircleLive
2D stress transformation
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Mohr's circle is a graphical way to transform a 2D stress state to any rotated axis. The circle's center is the average normal stress and its radius is the maximum shear. Where it crosses the horizontal axis gives the principal stresses — the orientation with zero shear. Educational tool.
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σ₁ (max principal)92.4 MPa
σ₂ (min principal)7.6 MPa
τmax42.4 MPa
Principal angle22.5°
Governing equation
Reading this result: The circle radius sets τmax = 42.4 MPa on planes 45° from the principals; rotate the element by 22.5° to reach the shear-free principal orientation.
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Frequently asked questions
- Is this good for educators?
- Yes — this version of "Mohr's Circle for a bridge girder" is framed for educators teaching it to a class. Drop a live demo into a lecture or assign it as a shareable link — no lab installs.
- Do I need to install anything?
- No. It runs in any modern browser, free, with no account required.