Everything about Torque
Turning force around an axis
In physics and mechanics, torque is the rotational correspondent of linear force. It is also referred to as the moment of force, or simply the moment. Just as a linear force is a push or a pull applied to a body, a torque can be thought of as a twist applied to an object with respect to a chosen axis. For example, when driving a screw, a screwdriver applies torque to the screw, causing it to tend to rotate around its axis. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: TorqueA 5-minute orientation
- Skim a recent paper: Observation of Spin Splitting Torque in a Collinear Antiferromagnet RuO 2Influential work since 2022
- Pick up a classic book: Induction MotorsThe most-reprinted book on the subject
- Read the landmark paper: Spin-Torque Switching with the Giant Spin Hall Effect of TantalumCited 4,029 times
- Go sideways: Rotation around a fixed axisA closely related topic
- Go sideways: Rigid body dynamicsA closely related topic
📖 Definitions
Noun A rotational or twisting effect of a force; a moment of force, defined for measurement purposes as an equivalent straight line force multiplied by the distance from the axis of rotation (SI unit newton-metre or N·m; imperial unit pound-foot or lb·ft, not to be confused with the foot pound-force, commonly "foot-pound", a unit of work or energy)
Verb To make something rotate about an axis by imparting torque to it.
Noun A tightly braided necklace or collar, often made of metal, worn by various early European peoples.
🏆 Landmark papers (most cited)
Spin-Torque Switching with the Giant Spin Hall Effect of Tantalum
Current-Induced Switching of Perpendicularly Magnetized Magnetic Layers Using Spin Torque from the Spin Hall Effect
Spin-Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
Spin transfer torque devices utilizing the giant spin Hall effect of tungsten
Spin-transfer torque generated by a topological insulator
Current-driven spin torque induced by the Rashba effect in a ferromagnetic metal layer
Chiral spin torque at magnetic domain walls
Torque sensorless control in multidegree-of-freedom manipulator
🆕 Influential since 2022
Observation of Spin Splitting Torque in a Collinear Antiferromagnet RuO 2
A Novel Ultrasound Robot With Force/Torque Measurement and Control for Safe and Efficient Scanning
Observation of Spin-Splitter Torque in Collinear Antiferromagnetic RuO 2
Critical Aspects of Electric Motor Drive Controllers and Mitigation of Torque Ripple—Review
An Energy-Oriented Torque-Vector Control Framework for Distributed Drive Electric Vehicles
📚 Books worth reading
Induction MotorsBahram Amin · 2000- 📕A comparison of concentric and eccentric hamstring to quadricep peak torque ratios at various speeds of muscle contraction as determined by the Kinetic CommunicatorMichael J. Braginton · 1990
- 📕Stator and rotor flux based deadbeat direct torque control of induction machinesBarbara H. Kenny · 2001
- 📕Uniaxial anisotropy theory and analysis of torque dataBrad Paul · 1991
- 📕Stepper motorCornelis de Kramer · 1994
- 📕Spin-out of veneer blocks during rotary cutting of veneerJ. F. Lutz · 1976
- 📕On hydrodynamic torque convertersSven Andersson · 1982
- 📕Laboratory performance of a powered back-up roll for peeling veneerStephen P. Loehnertz · 1982
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Rotation around a fixed axis Rotation around a fixed axis or axial rotation is a special case of rotational motion around an axis of rotation fixed, stationary, or static in three-dimension…
- Rigid body dynamics In classical mechanics, rigid body dynamics studies the movement of systems of interconnected bodies under the action of external forces. Along with statics…
- Angular momentum Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical…
- Circular motion In kinematics, circular motion is the motion of an object along a circular path. Examples of this include a stone tied to a string, a car moving around…
- Angular acceleration In kinematics, angular acceleration (symbol α, alpha) is the time derivative of angular velocity. Following the two types of angular velocity, spin angular…
- Work (physics) In science, work is the energy transferred to or from an object via the application of force along a displacement. In its simplest form, for a constant…
- Equations of motion In physics, equations of motion are equations that describe the behavior of a physical system in terms of its motion as a function of time. More specifically…
- Net force In mechanics, the net force is the sum of all the forces acting on an object. For example, if two forces are acting upon an object in opposite directions…