Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Mechanics

Forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more

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Threads

Thread data - metric, unified, ACME and others

Fasteners

Bolts, nuts and threaded rods - torque, tension and loads

Acceleration of Gravity and Newton's Second Law

Acceleration of gravity and Newton's Second Law - SI and Imperial units.

Acceleration Units Converter

Converting between units of acceleration.

American Standard Beams - S Beam

American Standard Beams ASTM A6 - Imperial units

American Wide Flange Beams

American Wide Flange Beams ASTM A6 in metric units

Area Moment of Inertia - Typical Cross Sections I

Typical cross sections and their Area Moment of Inertia.

Area Moment of Inertia - Typical Cross Sections II

Area Moment of Inertia, Moment of Inertia for an Area or Second Moment of Area for typical cross section profiles

Area Moment of Inertia Converter

Convert between Area Moment of Inertia units

Beam Loads - Support Force Calculator

Calculate beam load and supporting forces

Beams - Fixed at Both Ends - Continuous and Point Loads

Support loads, stress and deflections

Beams - Fixed at One End and Supported at the Other - Continuous and Point Loads

Support loads, moments and deflections

Beams - Supported at Both Ends - Continuous and Point Loads

Support loads, stress and deflections

Belt Transmissions - Speed and Length of Belt

Length and speed of belt and belt gearing.

Belts - Power Transmission and Efficiency

Calculate belts power transmission and efficiency

Belts - Pulley Diameters vs. Speed

The pulley laws - driver and driven - diameter and rpm

Body Moving on an Inclined Plane - Acting Forces

Required force to move a body up on an inclined plane.

Bollard Force

Friction, load and effort force in a rope turned around a bollard.

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British Universal Columns and Beams

Properties of British Universal Steel Columns and Beams

Cable Loads

Force and tension in cables with uniform loads

Car Acceleration

Online car acceleration calculator.

Center Mass

Calculate position of center mass

Center of Gravity

Bodies and their center of gravity

Center of Gravity and Buoyancy

Stability - the center of gravity vs. the center of buoyancy.

Centripetal and Centrifugal Acceleration and Force

Forces due to circular motion and centripetal / centrifugal acceleration.

Conn-Rod Mechanism

The connecting rod mechanism

Conservation of Momentum

Momentum of a body is defined as the product of its mass and velocity - recoil calculator

Density vs. Specific Weight and Specific Gravity

Introduction to density, specific weight and specific gravity.

Disk Brakes - Force and Torque

Force and torque by activated disk brakes

Drawbridge Elevation - Force and Moment

Calculate acting force and moment for a elevated drawbridge or a beam.

Efficiency of Small Machine Elements

Friction and efficiency in bearings and roller chains

Elevator - Force and Power

Required force and power to lift an elevator.

Energy

Energy is the capacity to do work

Engineering Materials

Typical properties of engineering materials like steel, plastics, ceramics and composites

Equilibrant

The force required to keep a system of forces in equilibrium

Fibre-reinforced Polymer Composites

Mechanical properties of fibers used to reinforce polymer composites

Flywheel - Kinetic Energy

The kinetic energy stored in a flywheel - the moment of inertia.

Force

Newton's third law - force vs. mass and acceleration.

Force acting on Body Moving in an Horizontal Plane

The force acting on a body moved in the horizontal plane

Force and Tension in a Rope due to Angle

Reduced load capacity in ropes, cables or lines - due to angle

Force Ratio

Force ratio - load force versus effort force

Formulas of Motion - Linear and Circular

Linear and angular (rotation) acceleration, velocity, speed and distance.

Friction - Friction Coefficients and Calculator

Friction theory with calculator and friction coefficients for combinations of materials like ice, aluminum, steel, graphite and many more.

Gear Reducing Formulas

Output torque, speed and horsepower when using gears

Gear Trains - Bicycle Gearing Calculator

Gear train transmission - bicycle gearing

Gears

Gears and effort force

Harmonic Oscillator

A simple harmonic oscillator

HE-A Steel Beams

Properties of HE-A profiled steel beams

HE-B Steel Beams

Properties of HE-B profiled steel beams

HE-M Steel Beams

Properties of HE-M profile steel beams

Hooke's Law

Hooke's law - force, elongation and spring constant

Hot Air Balloons - Lifting Weight Calculator

Calculate hot air ballons lifting forces.

Improvised Torque Wrench

Improvise a torque wrench with a luggage scale

Impulse and Impulse Force

Forces acting a very short time are called impulse forces.

ISO 2841 - Spark Plugs Metric Threads

Metric threads spark plugs according ISO 28741

Kinetic Energy

Energy possessed by an object's motion is kinetic energy.

Levers

Use levers to magnify forces

Lifting Wheels

Loads and effort force with lifting wheels.

Mass Moment of Inertia

The Mass Moment of Inertia vs. mass of object, it's shape and relative point of rotation - the Radius of Gyration.

Mass vs. Weight

Mass vs. weight - the Gravity Force.

Metric Bolts - Minimum Ultimate Tensile and Proof Loads

Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads

Metric Nuts - Proof Loads

Proof loads of metric nuts - coarse and fine threads

Metric Steel Bolts - Grades and Property Classes

Metric steel bolts, screws and studs - proof and tensile strength

Modulus of Rigidity

Shear Modulus (Modulus of Rigidity) is the elasticity coefficient for shearing or torsion force

Motors, Pulley Diameters and Speed

Pulley (Sheave) selection charts for motors ranging 850 - 3450 rpm

Movement Ratio

Machines and movement ratio (velocity ratio).

Normal Flange I Beams

Properties of normal flange I profile steel beams

Poisson's Ratio

When a material is stretched in one direction it tends to get thinner in the other two directions

Poisson's Ratio for Metals

Some metals and their Poisson's Ratio

Potential Energy - Hydropower

Elevation and potential energy in hydropower.

Power

Power is the rate at which work is done or energy converted

Projectile Range

Calculate the range of a projectile - a motion in two dimensions.

Pulleys

Pulleys, blocks and tackles.

Radians vs. Degrees

Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity.

Radius of Gyration in Structural Engineering

Radius of gyration is used to describe the distribution of cross sectional area in a column around its centroidal axis

Rolling Resistance

Rolling friction and rolling resistance.

Rotating Shafts and Torques

Torsional moments acting on rotating shafts

Screw Jacks

Screw jacks and effort force

Section Modulus - Unit Converter

Convert between Elastic Section Modulus units

Steel Bolts - ASTM Grades

ASTM steel bolts - proof and tensile strength

Steel Bolts - SAE Grades

SAE steel bolts - grades ranging grade 1 to 8.2 - proof and tensile strength

Steels - Endurance Limits and Fatigue Stress

Endurance limits and fatigue stress for steels

Stiffness

Stiffness is resistance to deflection

Stress

Stress is force applied on cross-sectional area

Stress in Thick-Walled Cylinders or Tubes

Radial and tangential stress in thick-walled cylinders or tubes with closed ends - with internal and external pressure

Stress in Thin-Walled Cylinders or Tubes

Hoop and longitudinal stress thin-walled tubes or cylinders

Stress, Strain and Young's Modulus

Stress is force per unit area - strain is the deformation of a solid due to stress

Support Reactions - Equilibrium

Static equilibrium is achieved when the resultant force and resultant moment equals to zero

Thermal Expansion - Stress and Force

Stress and force when thermal expansion is restricted

Three-Hinged Arches - Continuous and Point Loads

Support reactions and bending moments

Toggle Joint

A toggle joint mechanism can be used to multiply force

Torque - Work done and Power Transmitted

The work done and power transmitted by a constant torque

Torque or Moment of Force - Online Converter

Torque or moment - the tendency of a force to rotate an object

Torsion of Shafts

The torsion of solid or hollow shafts - Polar Moment of Inertia of Area

Trusses

Common types of trusses

UNC and UNF - Unified Inch Screw Threads

ANSI/ASME B1.1 Unified National Thread - UNC Coarse series and UNF Fine series

Universal Gravitational Law

Gravitational attraction between two objects vs. mass of the objects and the distance between them.

Vector Addition

An online vector calculator - add vectors with different magnitude and direction - like forces, velocities and more.

W-Beams - American Wide Flange Beams

Dimensions of American Wide Flange Beams ASTM A6 (or W-Beams) - Imperial units.

Weight of Beam - Stress and Strain

Stress and deformation of a vertical beam due to it's own weight

Wind Load vs. Wind Speed

Wind load on surface - Wind load calculator

Wire Rope Slings

Sling angle and influence on capacity

Work done by Force

Work done by a force acting on an object.

Young's Modulus, Tensile Strength and Yield Strength Values for some Materials

Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.

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