Dissertation > Excellent graduate degree dissertation topics show

A Research on the Optimization of Automotive Powertrain Mounting System and the Effect of Vibration in the Vehicle

Author: LanFeng
Tutor: ShangGuanWenBinï¼›ZhangWanJun
School: South China University of Technology
Course: Vehicle Engineering
Keywords: Powertrain Mounting System Vibration and Isolation Optimization Method Test Methods
CLC: U467.42
Type: Master's thesis
Year: 2011
Downloads: 94
Quote: 0
Read: Download Dissertation

Abstract


The key points for a modern vehicle are good ride and low noise, vibration and harshness (NVH). The engine excitations are the main noise and vibration sources for the vehicle. Therefore, the powertrain mounting system (PMS) plays an important role to decide the level of the vibration and noise in the cab. Increasing the performance of the PMS to isolate the chassis vibration due to the engine excitations is important to control the NVH for a vehicle.Based on reading many literatures, the research on the engine excitations, modeling the PMS, and understanding the kinetic energy distributions are proposed in this paper. The design strategy and calculation method for a PMS are analyzed. Then the objective function for natural frequencies placement and energy distributions of a PMS are described. The stiffness and locations of mounts are selected as the design variables. The stiffness ratios of a mount in its local coordinate system are selected as constraints. After the optimization model built, the MATLAB soft is used to program the optimization codes. The optimization results show a good natural frequencies placement and energy distributions for the PMS.The test methods of cab vibration based on the PMS are summarized in this paper. The experiment steps and measure conditions for the vibration are described in detail. Also the data and requirements for the post-process are proposed to reduce the tolerance and improve the reliability as far as possible. The methods summarized in this paper can be a good reference for measuring the cab vibration and evaluating the vibration levels.

Related Dissertations

  1. Physiological detection for wearable wireless sensor network QoS Routing,TP212.9
  2. Model-based rapid test method equipment,TJ06
  3. Research on Colorization Algorithm of Gray-scale,TP391.41
  4. Research and Application of Corrected Weighted Markov Model by Method of Stochastic Optimization Burnishing,O224
  5. TD-SCDMA wireless network planning and optimization technology research,TN929.533
  6. Research and implementation of software testing method based on SOA architecture information system,TP311.52
  7. Research on Openning Up Roadway Test System and Tuning the Performance of ABS,U467.5
  8. Study on the Method of the Microcomputer Protect Device Testing,TM774
  9. Thermal properties of thin film materials and testing,O484.4
  10. Research on Optimization Methods and Applications of Finite Thrust Trajectory Transfer,V412.41
  11. Mounting system simulation study based on the rigid-flexible multi-body dynamics of the vehicle,U463.33
  12. Research on Numerical Simulation of Shield Parts Noise/Sealing Performance and Optimization Design,U464.13
  13. The Government Expenditure and Taxes of Stochastic Models for Continuous Time,F123;F812.42
  14. Research on Testing Method and Scene Designation of Satellite Navigation Receiver,P228.4
  15. Research on Test Method of SSL Protocol,TP393.08
  16. The Mechanism Research of Visualization Experiment Approach for Solving System Global Shortest Path,TP13
  17. Effects of Cloze test methods,H319
  18. Establishment and Application of Micro-agglutination Test for Detection of Vaccine Immunological Antibodies Against Shigella Infection in Chicken,S858.31
  19. Study on Calibration Method of Gyrotheodolite,TH761.1
  20. The Application of the Noise Character of Cavity That is Situated in the Head of Underwater Vehicle,U674.941
  21. Accelerated Pavement Testing Equipment Assembly and Use of Technology,U416.03

CLC: >
© 2012 www.DissertationTopic.Net  Mobile