||This article may be too technical for most readers to understand. (September 2010) (Learn how and when to remove this template message)|
|This article does not cite any sources. (December 2007) (Learn how and when to remove this template message)|
Kinematic determinacy is a term used in structural mechanics to describe a structure where material compatibility conditions alone can be used to calculate deflections.
A kinematically determinate structure can be defined as a structure where, if it is possible to find nodal displacements compatible with member extensions, those nodal displacements are unique. The structure has no possible mechanisms, i.e. nodal displacements, compatible with zero member extensions, at least to a first-order approximation. Mathematically, the mass matrix of the structure must have full rank.
Kinematic determinacy can be loosely used to classify an arrangement of structural members as a structure (stable) instead of a mechanism (unstable).
|This technology-related article is a stub. You can help Wikipedia by expanding it.|