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Kinematic Diagram
In mechanical engineering, a kinematic diagram or kinematic scheme (also called a joint map or skeleton diagram) illustrates the connectivity of Linkage (mechanical), links and Mechanical joint, joints of a mechanism (engineering), mechanism or machine rather than the dimensions or shape of the parts. Often links are presented as geometric objects, such as lines, triangles or squares, that support schematic versions of the joints of the mechanism or machine. For example, the figures show the kinematic diagrams (i) of the Slider-crank linkage, slider-crank that forms a piston and crank-shaft in an engine, and (ii) of the first three joints for a Programmable Universal Machine for Assembly, PUMA manipulator. , - style="text-align:center;" , , , , - style="text-align:center;" , Programmable Universal Machine for Assembly, PUMA robot , , and its kinematic diagram Linkage graph A kinematics, kinematic diagram can be formulated as a Graph (discrete mathematics), graph by re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piston Bielle Vilebrequin Coupe Et Schema Cinematique
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder (engine), cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod. In a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering Porting (engine)#Two-stroke porting, ports in the cylinder. __TOC__ Piston engines Internal combustion engines An internal combustion piston engine, internal combustion engine is acted upon by the pressure of the expanding combustion gases in the combustion chamber space at the top of the cylinder. This force then acts dow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Degrees Of Freedom (mechanics)
In classical mechanics, physics, the number of degrees of freedom (DOF) of a mechanical system is the number of independent parameters required to completely specify its configuration or state. That number is an important property in the analysis of systems of bodies in mechanical engineering, structural engineering, aerospace engineering, robotics, and other fields. As an example, the position of a single railcar (engine) moving along a track has one degree of freedom because the position of the car can be completely specified by a single number expressing its distance along the track from some chosen origin. A train of rigid cars connected by hinges to an engine still has only one degree of freedom because the positions of the cars behind the engine are constrained by the shape of the track. For a second example, an automobile with a very stiff suspension can be considered to be a rigid body traveling on a plane (a flat, two-dimensional space). This body has three independe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mechanisms (engineering)
Mechanism may refer to: *Mechanism (economics), a set of Game form, rules for a game designed to achieve Social choice function, a certain outcome **Mechanism design, the study of such mechanisms *Mechanism (engineering), rigid bodies connected by joints in order to accomplish a desired force and/or motion transmission *Mechanism (biology), explaining how a feature is created *Mechanism (philosophy), a theory that all natural phenomena can be explained by physical causes *Mechanism (sociology), a theory that all social phenomena can be explained by the existence of a deterministic mechanism Arts, films, and music * "The Mechanism", song by Disclosure * "Mechanism", song by Front Line Assembly from ''WarMech'' * The Mechanism (TV series), ''The Mechanism'' (TV series), a Netflix TV series See also *Machine *Machine (mechanical) *Linkage (mechanical) *Mechanism of action, the means by which a drug exerts its biological effects *Defence mechanism, unconscious mechanisms aimed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Left-hand–right-hand Activity Chart
Left-hand–right-hand activity chart is an illustration that shows the contributions of the right and left hands of a worker and the balance of the workload The term workload can refer to several different yet related entities. An amount of labor An old definition refers to workload as the amount of work an individual has to do.Jex, S. M. (1998). Stress and job performance: Theory, research, and im ... between the right and left hands.Groover, M. P. (2007). ''Work Systems: The Methods, Measurement & Management of Work'', Prentice Hall, . References Further reading *Aft, L. S. (2000). ''Work measurements and methods improvement'', Wiley, . Industrial engineering {{Mech-engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinematic Synthesis
In mechanical engineering, kinematic synthesis (also known as mechanism synthesis) determines the size and configuration of Mechanism (engineering), mechanisms that shape the flow of power through a mechanical system, or machine, to achieve a desired performance. The word ''synthesis'' refers to combining parts to form a whole. Hartenberg and Denavit describe kinematic synthesis asHartenberg, R.S. and J. Denavit (1964Kinematic synthesis of linkages New York: McGraw-Hill — Online link from Cornell University. ...it is design, the creation of something new. Kinematically, it is the conversion of a motion idea into hardware. The earliest machines were designed to amplify human and animal effort, later gear trains and linkage systems captured wind and flowing water to rotate millstones and pumps. Now machines use chemical and electric power to manufacture, transport, and process items of all types. And kinematic synthesis is the collection of techniques for designing thos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Body Diagram
In physics and engineering, a free body diagram (FBD; also called a force diagram) is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reactions, which act on the body(ies). The body may consist of multiple internal members (such as a truss), or be a compact body (such as a beam). A series of free bodies and other diagrams may be necessary to solve complex problems. Sometimes in order to calculate the resultant force graphically the applied forces are arranged as the edges of a polygon of forces or force polygon (see ). Free body A body is said to be "free" when it is singled out from other bodies for the purposes of dynamic or static analysis. The object does not have to be "free" in the sense of being unforced, and it may or may not be in a state of equilibrium; rather, it is not fixed in place and is thus " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Higher Order Joints
Higher may refer to: Music * The Higher, a 2002–2012 American pop rock band Albums * ''Higher'' (Ala Boratyn album) or the title song, 2007 * ''Higher'' (Chris Stapleton album) or the title song, 2023 * ''Higher'' (Ezio album) or the title song, 2000 * ''Higher'' (Harem Scarem album) or the title song, 2003 * ''Higher'' (The Horrors album), 2012 * ''Higher'' (Life On Planet 9 album) or the title song, 2017 * ''Higher'' (Michael Bublé album) or the title song, 2022 * ''Higher'' (The Overtones album) or the title song, 2012 * ''Higher'' (Regina Belle album) or the title song, 2012 * ''Higher'' (Roch Voisine album) or the title song, 2002 * ''Higher'' (Treponem Pal album), 1997 * ''Higher'', by Abundant Life Ministries, 2000 * ''Higher'', by ReinXeed, 2009 * ''Higher'', by Russell Robertson, 2008 * ''Higher!'', by Sly and the Family Stone, 2013 * ''Higher'', a mixtape by Remy Banks, 2015 Songs * "Higher" Budjerah song), 2021 * "Higher" (Burna Boy song), 2024 * "High ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Primary Joints
Primary or primaries may refer to: Arts, entertainment, and media Music Groups and labels * Primary (band), from Australia * Primary (musician), hip hop musician and record producer from South Korea * Primary Music, Israeli record label Works * ''Primary'' (album) by Rubicon (2002) * "Primary" (song) by The Cure * "Primary", song by Spoon from the album ''Telephono'' Other uses in arts, entertainment, and media * Primaries or primary beams, in E. E. Smith's science-fiction series ''Lensman'' * ''Primary'' (film), American political documentary (1960) Computing * PRIMARY, an X Window selection * Primary data storage, computer technology used to retain digital data * Primary server, main server on the server farm Education * Primary education, the first stage of compulsory education * Primary FRCA, academic examination for anaesthetists in the U.K. * Primary school, school providing primary education Mathematics * ''p''-group of prime power order * Primary decomposition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinematic Pair
In classical mechanics, a kinematic pair is a connection between two physical objects that imposes constraints on their relative movement (kinematics). German engineer Franz Reuleaux introduced the kinematic pair as a new approach to the study of machines that provided an advance over the notion of elements consisting of simple machines. Description Kinematics is the branch of classical mechanics which describes the motion of points, bodies (objects) and systems of bodies (groups of objects) without consideration of the causes of motion. Kinematics as a field of study is often referred to as the "geometry of motion". For further detail, see Kinematics. Hartenberg & Denavit presents the definition of a kinematic pair: In the matter of connections between rigid bodies, Reuleaux recognized two kinds; he called them higher and lower pairs (of elements). With higher pairs, the two elements are in contact at a point or along a line, as in a ball bearing or disk cam and follower; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kinematic
In physics, kinematics studies the geometrical aspects of motion of physical objects independent of forces that set them in motion. Constrained motion such as linked machine parts are also described as kinematics. Kinematics is concerned with systems of specification of objects' positions and velocities and mathematical transformations between such systems. These systems may be rectangular like cartesian, Curvilinear coordinates like polar coordinates or other systems. The object trajectories may be specified with respect to other objects which may themselve be in motion relative to a standard reference. Rotating systems may also be used. Numerous practical problems in kinematics involve constraints, such as mechanical linkages, ropes, or rolling disks. Overview Kinematics is a subfield of physics and mathematics, developed in classical mechanics, that describes the motion of points, bodies (objects), and systems of bodies (groups of objects) without considering the forces ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chebychev–Grübler–Kutzbach Criterion
The Chebychev–Grübler–Kutzbach criterion determines the number of degrees of freedom of a kinematic chain, that is, a coupling of rigid bodies by means of mechanical constraints. These devices are also called linkages. The Kutzbach criterion is also called the ''mobility formula'', because it computes the number of parameters that define the configuration of a linkage from the number of links and joints and the degree of freedom at each joint. Interesting and useful linkages have been designed that violate the mobility formula by using special geometric features and dimensions to provide more mobility than predicted by this formula. These devices are called overconstrained mechanisms. Mobility formula The mobility formula counts the number of parameters that define the positions of a set of rigid bodies and then reduces this number by the constraints that are imposed by joints connecting these bodies.J. J. Uicker, G. R. Pennock, and J. E. Shigley, 2003, Theory of Machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graph (discrete Mathematics)
In discrete mathematics, particularly in graph theory, a graph is a structure consisting of a Set (mathematics), set of objects where some pairs of the objects are in some sense "related". The objects are represented by abstractions called ''Vertex (graph theory), vertices'' (also called ''nodes'' or ''points'') and each of the related pairs of vertices is called an ''edge'' (also called ''link'' or ''line''). Typically, a graph is depicted in diagrammatic form as a set of dots or circles for the vertices, joined by lines or curves for the edges. The edges may be directed or undirected. For example, if the vertices represent people at a party, and there is an edge between two people if they shake hands, then this graph is undirected because any person ''A'' can shake hands with a person ''B'' only if ''B'' also shakes hands with ''A''. In contrast, if an edge from a person ''A'' to a person ''B'' means that ''A'' owes money to ''B'', then this graph is directed, because owing mon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
