We present a method, in the form of a constrained optimization problem, that facilitates the evaluation of the stiffness matrices to be used in a dynamic simulation. The intervertebral disk and the ligaments are represented by an equivalent stiffness matrix whose elements are assumed to be constant...
Simple Derivation of the Stiffness Matrix for Axial/Torsional Coupling of Spiral Strands - Raoof, Kraincanic - 1995 () Citation Context ...aissance, les modèlessexistants reposent sur des géométries statiques négligeant ainsisles déformations réelles des fils ainsi que les conditionssélectro...
The stiffness matrices which are obtained from these matrices lack all the properties a stiffness matrix should have. This paper shows why this happens and how we can modify the matrices to obtain correct stiffness matrices for elastic plates (extension), bodies and elastic plates (bending). 关键...
Based on matrix displacement method for arch structure and fiber element method for concrete-filled steel tube arch bridge,through improving division of section element on arch rib,chose appropriate 8-node shape fun...
stiffness and damping formulas de- rived for the complex modal model. These assumptions greatly simply the equations for calculating mass, stiffness, and damping matrices, but a matrix inversion (in this case the mode shape matrix) is still required. Again, a large set of linearly independent ...
The word is of old Frenchderivation. 该词源于古法语。 柯林斯高阶英语词典 The custom is of Scottishderivation. 这风俗起源于苏格兰. 《简明英汉词典》 Bureaucracy is thederivationof feudal despotism, it is a long and complex historical phenomenon. ...
Rotation Matrix Convention From Global to Local: X’ Y’ = Cos Sin -Sin Cos X Y X’ Y’ = X Y or [R’] From Local to Global: X Y = Cos -Sin Sin Cos X’ Y’ X Y = X’ Y’ or [R] X’ and Y’ are unit vectors, which means that they each have a length of 1. Th...
Method for the experimental determination of a stiffness matrix, a mass matrix and / or a damping matrix of a mechanical object are determined and the scaled modal parameters are used to deduce the real entries of the stiffness matrix, the mass matrix and / or the damping matrix... J Biene...
3D-beam' s displacement' s differential equation was used to deduce the element stiffness matrix with shear effect,and dynamical load' s principle of virtual work was employed to illustrate the 3D-beam' s element mass matrix.A valued example was represented to demonstrate the influence of natural...
One important aspect of the dynamic performance evaluation of a parallel manipulator is the elastodynamic analysis which calls for the calculation of the stiffness and mass matrices. In the elastodynamic analysis, the motors are assumed to be locked, and thus, the system's mass matrix should be ...