Search results
Results From The WOW.Com Content Network
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.
For two-dimensional, plane strain problems the strain-displacement relations are = ; = [+] ; = Repeated differentiation of these relations, in order to remove the displacements and , gives us the two-dimensional compatibility condition for strains
Agnew recognized that strain theory, originally put forward by Robert King Merton, was limited in terms of fully conceptualizing the range of possible sources of strain in society, especially among youth. According to Merton, innovation occurs when society emphasizes socially desirable and approved goals but at the same time provides inadequate ...
In mechanics, strain is defined as relative deformation, compared to a reference position configuration. Different equivalent choices may be made for the expression of a strain field depending on whether it is defined with respect to the initial or the final configuration of the body and on whether the metric tensor or its dual is considered.
Eigenstrain analysis usually relies on the assumption of linear elasticity, such that different contributions to the total strain are additive. In this case, the total strain of a material is divided into the elastic strain e and the inelastic eigenstrain ϵ ∗ {\displaystyle \epsilon ^{*}} :
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
Plastic deformation of a thin metal sheet. Flow plasticity is a solid mechanics theory that is used to describe the plastic behavior of materials. [1] Flow plasticity theories are characterized by the assumption that a flow rule exists that can be used to determine the amount of plastic deformation in the material.
After the band has passed through the material the deformation proceeds uniformly with positive strain hardening. Sometimes Lüders band transition into the Portevin–Le Chatelier effect while changing the temperature or strain rate, this implies these are related phenomena [4] Lüders bands are known as a strain softening instability. [5]