Example engineering calculations
Worked, unit-aware calculation worksheets across structural, mechanical, electrical and more. Open any example into your own workspace to edit and reuse.
39 examples found
Bolt Stiffness Calculation
Calculating stiffness of bolt and joint
Pressure Vessel Wall Thickness Calculator
Calculating the required wall thickness for a pressure vessel
Pump Power Estimate
Estimating the power of a pump
Shaft Torque and Power Calculator
Calculating the power and torque of a shaft
Bolted Joint Shear Stress
Average shear stress in a bolted/riveted connection and the factor of safety against an allowable shear.
Torsion of a Circular Shaft
Maximum shear stress and angle of twist in a solid circular shaft transmitting torque.
Helical Compression Spring Rate
Spring rate (stiffness) and deflection of a round-wire helical compression spring.
Shaft Power from Torque and Speed
Mechanical power transmitted by a rotating shaft from its torque and angular speed.
Gear Ratio and Output Torque
Gear ratio of a meshing pair and the output torque it produces from a given input torque.
Belt / Pulley Surface Speed
Linear belt speed at the rim of a rotating pulley from its diameter and rotational speed.
Rolling Bearing Basic Life (L10)
Basic rating life of a ball bearing from its dynamic load rating and the applied equivalent load.
Thermal Expansion of a Component
Change in length of a component due to a temperature change via its coefficient of thermal expansion.
Hoop Stress in a Thin-Walled Pressure Vessel
Circumferential (hoop) stress in the wall of a thin cylindrical pressure vessel.
Shaft Key Shear Stress
Shear stress in a parallel shaft key transmitting torque between a shaft and hub.
Flywheel Kinetic Energy
Rotational kinetic energy stored in a flywheel from its moment of inertia and speed.
Energy Stored in a Spring
Elastic potential energy stored in a linear spring at a given deflection.
Factor of Safety on Yield
Factor of safety of a component comparing material yield strength to the applied working stress.
Torsional Stiffness of a Shaft
Torsional stiffness (torque per unit twist) of a circular shaft.
Natural Frequency of a Spring–Mass System
Undamped natural frequency of a single-degree-of-freedom spring–mass system.
Bolt Preload from Tightening Torque
Tension developed in a bolt by a tightening torque via the nut factor.
Polar Moment of Inertia of a Shaft
Polar second moment of area of a solid circular shaft.
Second Moment of Area of a Circle
Second moment of area of a solid circular section about a diameter.
Belt Capstan (Friction) Tension
Tight-side tension of a belt or rope over a pulley using the capstan equation.
V-Belt Power Transmission
Power transmitted by a belt drive from its tension difference and speed.