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.
Compatibility conditions are mathematical conditions that determine whether a particular deformation will leave a body in a compatible state. [2] In the context of infinitesimal strain theory, these conditions are equivalent to stating that the displacements in a body can be obtained by integrating the 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.
Hans Selye defined stress as “the nonspecific (that is, common) result of any demand upon the body, be the effect mental or somatic.” [5] This includes the medical definition of stress as a physical demand and the colloquial definition of stress as a psychological demand. A stressor is inherently neutral meaning that the same stressor can ...
In continuum mechanics, the infinitesimal strain theory is a mathematical approach to the description of the deformation of a solid body in which the displacements of the material particles are assumed to be much smaller (indeed, infinitesimally smaller) than any relevant dimension of the body; so that its geometry and the constitutive properties of the material (such as density and stiffness ...
Generalized belief: the strain should be clearly defined, agreed upon, and understood by participants in group action. Precipitating factors: event(s) must occur that act as the proverbial spark that ignites the flame of action. Mobilization for action: participants must have a network and organization that allows them to take collective action.
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