element stiffness matrix

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• Stiffness — is the resistance of an elastic body to deformation by an applied force. It is an extensive material property.DefinitionThe stiffness, k , of a body is a measure of the resistance offered by an elastic body to deformation (bending, stretching or… …   Wikipedia

• Matrix stiffness method — In structural engineering, the matrix stiffness method (or simply stiffness method , also known as Direct stiffness method) is a matrix method that makes use of the members stiffness relations for computing member forces and displacements in… …   Wikipedia

• Direct stiffness method — As one of the methods of structural analysis, the direct stiffness method (DSM), also known as the displacement method or matrix stiffness method, is particularly suited for computer automated analysis of complex structures including the… …   Wikipedia

• Finite element method in structural mechanics — Finite element method (FEM) is a powerful technique originally developed for numerical solution of complex problems in structural mechanics, and it remains the method of choice for complex systems. In the FEM, the structural system is modeled by… …   Wikipedia

• Engineering treatment of the finite element method — This is a draft of a new explanation as suggested on . The finite element method (FEM) is a technique for finding approximate solutions to differential equations that is particularly useful in engineering. As of 2005, FEM is the primary analysis… …   Wikipedia

• Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …   Wikipedia

• Finite element method — The finite element method (FEM) (sometimes referred to as finite element analysis) is a numerical technique for finding approximate solutions of partial differential equations (PDE) as well as of integral equations. The solution approach is based …   Wikipedia

• Mass matrix — In computational mechanics, a mass matrix is a generalization of the concept of mass to generalized coordinates. For example, consider a two body particle system in one dimension. The position of such a system has two degrees of freedom, the… …   Wikipedia

• Trefftz method — In mathematics, the Trefftz method is a method for the numerical solution of partial differential equations named after the German mathematician Erich Trefftz (1888 1937). It falls within the class of finite element methods. Introduction The… …   Wikipedia

• Rotordynamics — is a specialized branch of applied mechanics concerned with the behavior and diagnosis of rotating structures. It is commonly used to analyze the behavior of structures ranging from jet engines and steam turbines to auto engines and computer disk …   Wikipedia

• Modal analysis using FEM — The goal of modal analysis in structural mechanics is to determine the natural mode shapes and frequencies of an object or structure during free vibration. It is common to use the finite element method (FEM) to perform this analysis because, like …   Wikipedia