Roark Calculations 13 calculators
Interactive calculators based on Roark's Formulas for Stress and Strain (7th Edition) by Warren C. Young and Richard G. Budynas. Select a calculator to open it.
Beam Calculator
Shear, moment, slope, and deflection for beams under various loading and end conditions.
Open CalculatorFrame Calculator
Reactions and moments for rigid frames including portal, rectangular, and trapezoidal configurations.
Open CalculatorCircular Plate Calculator
Flat circular plates of constant thickness. Annular and solid plates with various load types and edge conditions.
Open CalculatorStraight-Boundary Plate Calculator
Rectangular, triangular, and other straight-edged flat plates of constant thickness under uniform and concentrated loads.
Open CalculatorEccentric Prism Calculator
Short prisms and blocks under eccentric compressive load where stress reversal is impossible. Kern limits and contact area.
Open CalculatorPressure Vessel Calculator
Stress and deformation in shells of revolution under internal/external pressure, including cylinders and spheres.
Open CalculatorCylindrical Shell Calculator
Shear, moment, slope, and deflection in long and short cylindrical shells under axisymmetric edge and line loading.
Open CalculatorShell Bending Stress Calculator
Combined bending and membrane stresses in thin-walled shells of revolution, including local load and support effects.
Open CalculatorShell Junction Calculator
Discontinuity stresses at junctions of shells and plates. Matching moments and shears between dissimilar sections.
Open CalculatorThick-Walled Vessel Calculator
Stress analysis for thick-walled cylinders and spheres where thin-wall assumptions do not apply.
Open CalculatorContact Stress Calculator
Hertzian contact stress and deformation between elastic bodies — spheres, cylinders, and general curved surfaces.
Open CalculatorElastic Stability: Bars & Rings
Critical buckling loads for bars, rings, and beams. Column buckling, lateral-torsional buckling, and ring instability.
Open CalculatorElastic Stability: Plates & Shells
Critical buckling stresses for flat plates and cylindrical shells under compression, shear, bending, and external pressure.
Open Calculator