By using the condition of orthogonality of normalization vibration mode, the inertia matrix, the stiffness matrix and the damping matrix are become diagonal matrix.
This paper reports an experimental technique,by which hologram of vibration mode in a lathe(3mL×1.4mH)on ordinary workshop floor has been successfuly taken with a 10 mW He-Ne laser.
The ANSYS finite element analysis programm is used to calculate the static deformation and dynamic mode shape of vibration theoretically which occur in the original or newly designed columns of the XA5040A knee-and-column milling machine.
Through qualitative analysis of the mode strain energy formulation,the characteristic of the mode shape with the largest mode strain energy is concluded,and this mode is defined as the fundamental mode of the structure under fluctuating wind.
Based on fundamental vibration theories, the natural frequencies and mode shapes of the entire staged-combustion rocket engine and the engine’s main pipeline system were investigated with modern finite element analysis method.
The second response characteristics is bending vibration of bottoms of boxes with mode shapes of one and two sine half waves ranging between 45-100Hz, which results from the similarity of boxes.
Entity model and finite element model was studied for the new exploitation Cylinder Block of CY4102BZQ Diesel Engine by application of Pro/E and I-DEAS FEA, the modal analysis was carried out,the mode shapes and natural frequency of the cylinder block were obtaind.
This paper establishes the general recurrence steps of using difference method for the frequency equation and mode shapes of discrete multi-mass shear structures.
The mode vibration model and proper frequency of the frame are calculated by mode analysis. The local intension is considered by the frequency and the model.
Using the finite element analysis software ANSYS9.0 established tower cranes finite element model for the structure of its national position analysis and research in this article,and given its four bands of natural frequencies and vibration model correspondingly of tower cranes for the security of the work provided theoretical guidance,the analysis and conclusions can be applied to the equipment vibration depression design.
The vibration model of the 2×1100 gear transmission used for central drived mill system is built up,and the microcomputer is used to solute its vibration characterictics by rectangular matrix process of iteration method.
The author puts forward the Leiji correlation method for relativity analysis of vibration model in dynamic design by combining with the Finite Element Method(FEM) with dynamic analysis and Test Modal Analysis(TMA).
For the first group, the utilization of the partial electrodes can increase the coupling coefficient of the thickness vibrations by 7-23%, depending on the vibration mode.
Each vibrational mode was assigned to the vibrations of certain functional groups of atoms in the molecule, taking into account the local symmetry characteristics of the vibration mode.
The relationships determining the characteristics of the overtone vibration mode and expressions describing the changes in the structural and geometric molecular parameters are obtained by solving the deduced equation.
It is noted that the dominant vehicle structural response to the blast is similar to the first torsional structural mode shape obtained through an eigenvalue analysis of the system.
The modulus of elasticity, Poisson's ratio and density of adhesive were found to have negligible effects on the first 10 natural frequencies and mode shapes of the corner joint.
A new constructive algorithm based on the notion of "sagittary function" is used to find the dependences of the natural frequencies and mode shapes on the angular velocity for lower vibration modes.
The strength of the temperature dependence for113SnSn does not agree with the predictions of a lattice vibration model proposed recently for the temperature dependence of the quadrupole interaction.
Using an elastic vibration model for phonons of an oxidized small metallic particle, size dependence of the superconducting transition temperature TC is derived.
By applying the sinusoidal wave mode to simulate the rugged surface of bridge deck, accounting for vehicle-bridge interaction and using Euler-Bernoulli beam theory, a coupling vibration model of vehicle-bridge system was developed.
振型
vibration mode
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