The Experimental Modal Analysis And Evaluation Of The Calculation Of Stent Device Structure

Vibration is one of the important problems often encountered in machine structure, as the vibration would cause the resonance or fatigue of the structure to break the structure. Therefore, understanding of the structure which itself has a characteristic that the stiffness of the structure, also know as the natural frequency and vibration modal, will avoid causing unnecessary losses Because of resonance as a result of the factors in the process. Modal Analysis is designed to determine the vibration characteristics of the structure or mechanical components and to obtaining the structure of the natural frequency and vibration modal. Accurate modal analysis of complex structure will provide a basis for vibration characteristics analysis of structural systems, diagnosis of vibration fault, design of structural dynamic optimization.Numerical value modall analysis and experimentation modall analysis is currently the two methods of researching on the structural dynamics. It has become an important means that features mutual supplementation, which is the solution to the dynamic design of a modalrn complex structure. This article is to analyze the free modal and working modal of the stent device structure and its various components by the finite element method and experimental method. The combination of two types of analysis evaluates the results ultimately.Specifically speaking, Selection 3-D, 8-node structural analysis element SOLID 45 And mapping by the finite element mesh division establish the three-dimensional finite element modall of the stent device structure and its various components by General business application finite element software ANSYS. Application of ANSYS modal analysis module LANCZOS method analyzes the free modal and working modal of the stent device structure and its various components by the finite element method; Application of DP730 (24 channels) vibration meter, power hammer, and single-axis and 3-axis accelerometer and the experimental software SignalCalc730 produced by Data Physics in the United States, Combined with the experimental data processing and modal analysis software Me'scope analyzes the free modal and working modal of the stent device structure and its various components by Experimental Analysis. Finally, the first five modal and frequency, which is the ANSYS calculation modal analysis and experimental modal analysis of the stent device structure and its base, were analyzed comparatively. Evaluating the dynamic properties of the stent device structure, it is ensured that first-order frequency of the stent device structure is greater than 100Hz.