The on-line computational and graphics website for Mechanical engineers covering:
Mechanics, Dynamics, Design, Vibrations, Structures, Heat Transfer, Thermodynamics, Fluid Flow, Metalworking, Economics and related disciplines.

AVAILABLE CALCULATIONS (all free!) - New ones are added periodically
Machine Mechanics	Rolling Wheel
	Motion of Crank-Slider Mechanism
	Buckling of Helical Spring
	Bolt & Nut Bolted Joint: Stiffnesses of components
	Cap Screw Bolted Joint: Stiffnesses of components
	Bolted Joint: Static and Dynamic loading
	Butt Weld under axial and transverse loading
	Fillet Weld under Torsional loading
	Fillet Weld under Bending loading
Material Stresses	Pressure loading: Thin-walled vessels (Sphere & Cylinder)
	Pressure loading: Thick-walled Cylinder
	Stresses due to Interference (press or shrink) fit
	Contact stresses: Sphere on a sphere
	Contact stresses: Sphere on a Flat surface
	Contact stresses: Cylinder on a cylinder
	Contact stresses: Cylinder on a Flat surface
	Rotational loading: Thin disk
	2D Stresses & Mohr's Circle
	3D Stresses & Mohr's Circles
	Static Failure analysis: Ductile material
	Static Failure analysis: Brittle material
	Buckling of Column with Rectangular cross-section
	Buckling of Column with Circular cross-section
	Fatigue & dynamic Failure analysis
	Stress Concentration factors: Two U-Notches in a Rectangular member
	Stress Concentration factors: Circular Hole in a Rectangular member
	Stress Concentration factors: U-Notch in a Circular shaft
	Stress Concentration factors: Square Shoulder with Fillet in a Circular shaft
	Stress Concentration factors: Radial Hole in hollow or solid Circular shaft
Fluid Flow	Reynolds Number and Friction Factors
	Liquid Pipe flow: Pressure Drop calculation
	Liquid Pipe flow: Pipe Length calculation
	Liquid Pipe flow: Flow Rate calculation
	Liquid Pipe flow: Pipe Diameter calculation
	Gas Z-factor, Viscosity & Specific Gravity for a given Composition
	Gas Z-factor & Viscosity for a given Specific gravity
	Gas flow in Horizontal Pipeline
	Gas flow in Inclined Pipeline
	Forces on a pipe bend
Heat Transfer	Shell & Tube Heat Exchanger: Corrected LMTD
Vibrations	Critical Speed of a Multi-Rotor System
Metalworking	Hardness-To-Hardness Conversion
Metalworking	Sheet metal Bend Deduction & Allowance
Economics	Basic cashflow analysis
Economics	Project selection/Capital allocation by Ranking method
Beam Flexure	Simply-supported beam with concentrated Force at intermediate point
	Simply-supported beam with concentrated Couple at intermediate point
	Simply-supported beam with Uniform Distributed load
	Simply-supported beam with Triangular Distributed load
	Simply-supported beam with Twin concentrated Forces
	Simply-supported beam with Single overhang and concentrated Force at free end
	Simply-supported beam with Single overhang and uniform Distributed load
	Simply-supported beam with Double overhang and concentrated Forces both ends
	Simply-supported beam with Double overhang and Distributed load
	Simply-supported beam with Multiple and Varied loading: I
	Simply-supported beam with Multiple and Varied loading: II
	Cantilevered beam with concentrated Force at intermediate point
	Cantilevered beam with concentrated Couple at intermediate point
	Cantilevered beam with Uniform Distributed load
	Cantilevered beam with Triangular Distributed load
Miscellaneous	Units Conversion Calculators
	Units Conversion factors
	Petroleum Engineering Calculators
	Civil Engineering Calculators
	Chemical Engineering Calculators
	Human Attractiveness Calculators