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Strain theory is a sociological and criminological theory developed in 1939 by Robert K. Merton. [1] The theory states that society puts pressure on individuals to achieve socially accepted goals (such as the American Dream), even though they lack the means to do so.
The concept of strain is used to evaluate how much a given displacement differs locally from a rigid body displacement. [1] [8] [9] One of such strains for large deformations is the Lagrangian finite strain tensor, also called the Green-Lagrangian strain tensor or Green–St-Venant strain tensor, defined as
The infinitesimal strain theory is used in the analysis of deformations of materials exhibiting elastic behavior, such as materials found in mechanical and civil engineering applications, e.g. concrete and steel. Large-displacement or large-rotation theory, which assumes small strains but large rotations and displacements.
Strain theory can refer to; In chemistry: Baeyer strain theory; In social sciences: Strain theory (sociology), the theory that social structures within society may pressure citizens to commit crime; Value-added theory, the assumption that certain conditions are needed for the development of a social movement
Strain theory is a theoretical perspective that identifies anomie (i.e. normlessness) as the result of a society that provides little moral guidance to individuals. [ 1 ] : 134 Emile Durkheim (1893) first described anomie as one of the results of an inequitable division of labour within a society, observing that social periods of disruption ...
General strain theory (GST) is a theory of criminology developed by Robert Agnew. [ 1 ] [ 2 ] [ 3 ] General strain theory has gained a significant amount of academic attention since being developed in 1992. [ 4 ]
To derive the equation of the Mohr circle for the two-dimensional cases of plane stress and plane strain, first consider a two-dimensional infinitesimal material element around a material point (Figure 4), with a unit area in the direction parallel to the -plane, i.e., perpendicular to the page or screen.
Value-added theory (also known as social strain theory) is a sociological theory, first proposed by Neil Smelser in 1962, which posits that certain conditions are needed for the development of a social movement.