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A Dynamic Characteristic Analysis and Study for Structure Improvement of Motorcycle Flame

Author: Gu
Tutor: BiFengRong
School: Tianjin University
Course: Mechanical Manufacturing and Automation
Keywords: Motorcycle Frame Vibration Finite element method Modal Analysis
CLC: U483
Type: Master's thesis
Year: 2007
Downloads: 152
Quote: 7
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Abstract


At present, many developed countries and Taiwan Province of China , motorcycle product development and design , simulation analysis process used in all computerized and dynamic , and the design level of the domestic motorcycle still stuck in the mapping of imitation , traditional static strength check static design stage. This this is the dynamic nature of the problem is reduced as a static problem to deal with the shortcomings of structural fatigue damage and reliability problems inevitably occur . Study the structure of the dynamic characteristics the simplified static stiffness to handle , it can not effectively control the vibration and noise of the structure . The dynamic characteristics of the motorcycle structure analysis is very important in order to improve motorcycle safety and reliability and comfort of the occupants , reduce environmental noise pollution . This paper, using the finite element method to analyze the vibration characteristics of the motorcycle frame by frame modal analysis of the dynamic characteristics of the frame with the in-depth understanding of the system , provides an important basis to solve the problem of the vibration of the motorcycle , certain theoretical significance and practical value. The main research work is as follows : (1) analysis of the boundary conditions and structural properties of the frame , the establishment of effective frame finite element model . (2 ) finite element model of the frame modal analysis, the natural frequency of vibration may cause the frame and the corresponding mode shape . (3) study the the theoretical modal relative ratio of the experimental modal analysis method, a better understanding of the dynamic characteristics of the motorcycle . (4) In the frame modal analysis on the basis of in-depth study , analysis and the frame damping improvement program and achieved good damping effect .

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CLC: > Transportation > Road transport > Other road transport > Motorcycles, motorized bicycles
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