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K3 Leisure Vehicle Frame’s Static Dynamic Analysis and Optimization Design

Author: DengHaiYing
Tutor: YeNanHai
School: Hunan University
Course: Mechanical Manufacturing and Automation
Keywords: Frame Finite Element Analysis Transient Response Modal Analysis Test Structural optimization
CLC: U463.32
Type: Master's thesis
Year: 2009
Downloads: 178
Quote: 8
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Abstract


The K3 type tourism and leisure car is a Motor Co., Ltd. to design light vehicles , this model is applicable to tourist scenic spot sightseeing transportation . The prototype line frame in the testing process vertical bending deformation is too large , the support beam of the engine compartment, breaking the rear top of Outsourcing beams supporting skeleton unsoldering problem that affects the safe driving of motor vehicles . This article is aimed at computer-aided design and computer-aided analysis of the introduction of the automobile frame design , further perfect the the K3 type tourism and leisure car 's design , the frame structure to achieve optimal performance . This paper first introduces the overview of the work of the K3 type tourist recreational vehicles , and the use of computer-aided design technology to create three-dimensional digital model of the automobile frame , using the finite element analysis by CAE program MSC.PATRAN / NASTRAN static analysis of the frame , draw the key parts of the stress and strain , whether the analysis frame structure to meet the strength and stiffness conditions . And then proceed to the frame of the static test , and verify the reasonableness and correctness of the static , finite element analysis ; Secondly, modal transient response analysis of frame , frame the natural frequencies and mode shapes of frame road excitation displacement response and stress response , and the results were analyzed to identify the reasons for the problems of car use ; Finally , the use of optimal design theory as the goal frame lightweight frame deformation constraint optimization module using MSC.NASTRAN size optimization design of the frame rails , the same time frame structural improvements , optimization and improved results in more detail the stress-strain analysis, and transient response analysis to validation to optimize the results of the reasonableness of the proposed structure improvement program . Optimize the design, the cross-sectional size of the frame rails from 75 × 50 × 2.5, changed to 118 × 45 × 2.5 deformation meet the manufacturers allow the design value ; increase support skeleton structure and the local position of the car . Through the transformation of models to market , achieved the desired effect on the market reaction .

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Travel System > Frame
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