6 bolt-down points on a rover. Try the 3 buttons below and watch the badge change.
Drag to spin · click a joint to select it
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Manufacturing error
Numbers
Locks used— / 6
Extra (redundant) locks0
Force from the error0 N
Twist from the error0 N·m
Peak stress0.0 MPa
Sag under gravity— mm
Load path—
6 points on a ring. A rigid body needs exactly 6 locks total. Pin = 1 lock, shear pin = 2, ball = 3, clevis = 5, fully bolted = 6. Mix types across the 6 points to hit exactly 6 with no extras. Extra locks fight each other under any tiny manufacturing or thermal mismatch — that shows up as real force, unless you add flex somewhere to absorb it.