Mechanics calculators
Mohr’s circleCalculate principal stresses, maximum shear, and rotated plane stress.Stress–strain curvePlot a Ramberg–Osgood curve from modulus, proof strength, and exponent.Fracture mechanicsEvaluate stress intensity or critical crack size with an entered geometry factor.Fatigue crack growthEstimate Paris-law cycles between two crack sizes.Hole and notch stress concentrationCalculate elastic peak stress for ideal circular or elliptical holes.Lug and pin screeningCompare nominal lug and pin stresses against entered allowables.