Dissertation > Excellent graduate degree dissertation topics show

Aircraft Assembly Tolerance Optimization Method

Author: LiZhongHui
Tutor: LuShiHong
School: Nanjing University of Aeronautics and Astronautics
Course: Materials Processing Engineering
Keywords: Tolerance Optimization Tolerance Analysis Tolerance optimal allocation Monte Carlo Simulation Improved PSO CAAT
CLC: V262.42
Type: Master's thesis
Year: 2010
Downloads: 219
Quote: 4
Read: Download Dissertation

Abstract


In aircraft development , the rational design of assembly tolerances improve the assembly accuracy , reduce development costs and improve the success rate of once assembled an effective way . This paper summarizes the current status of aircraft parts tolerance design , based on the study of the aircraft assembly tolerance optimization design method . The main contents are as follows: ( 1 ) to establish a tolerance analysis processes, mainly studied based on Monte Carlo simulation of assembly tolerance analysis , using the Monte Carlo method for tolerance analysis results and probability France close , with the number of simulations increase , improve the accuracy of calculation , however, does not require a lot of statistical data ; addition, when some size distribution does not obey normal distribution, using Monte Carlo simulation can also be easily solver . Studied the low success rate when assembling the ring to adjust the composition according to the last with examples illustrate assembly tolerance analysis processes. ( 2 ) to establish a tolerance optimal allocation processes, studied optimal tolerance allocation model . Optimal allocation model for tolerance and other complex non-linear characteristics , studies based on real-coded genetic algorithm for optimal allocation of tolerance . And real-coded genetic algorithm for the premature and slow convergence disadvantages of particle swarm optimization (PSO), and standard particle swarm algorithm based on the study of an improved particle swarm optimization algorithm. Discusses the improved particle swarm optimization algorithm for tolerance allocation in the application of the final solution with examples illustrates the optimal allocation of tolerance on the issue of improved particle swarm optimization than standard PSO algorithm and genetic algorithm more efficient, and improved particle swarm algorithm convergence, stability and efficiency of the algorithm has improved significantly. ( 3 ) In theory , based on the use of Matlab GUI and Access initial development of a prototype aircraft assembly tolerance system (CAAT). Specific content includes automatic query module tolerance , tolerance analysis and tolerance optimization module allocation module . And an example of the system has been verified.

Related Dissertations

  1. Aerial Target Anti-interference Recognition and Tracking System,TN215
  2. Research on Real Options Models and Applications in China,F832.5
  3. The Application Research to Risk Measurement of Index Futures,F224
  4. Monte Carlo simulation cC 4 F 8 and CHF 3 mixed gas discharge characteristics,TM213
  5. Light in the steady - state transmission model the layered tablet biological organization,R318.51
  6. Study on Optical Properties of the Dynamic Human Skin,R751
  7. Reliability Assessment of Power System with Wind Farm,TM732
  8. Research on TD-SCDMA Radio Network Planning of the Common City Proper and College Town in FUZHOU,TN929.533
  9. Interference with the wireless communication system coexist Research and Development Platform,TN929.533
  10. Research on Integrated Risk Measurement Model for Defaultable Zero-coupon Bonds,F830.9
  11. In the standard model based on VaR Equity Fund Risk Assessment Study,F224
  12. New Model Based on Delta-P1 Approximation for Biological Tissue,R318.51
  13. Some Problems of Life Cycle for Long-span Prestressed Concrete Box Girder Bridge,U448.35
  14. Study on Application of Bid Decision Model in Engineering Project,F284
  15. Evaluation on Equity Linked Product from Investors’ Perspective,F830.91
  16. HULL-WHITE numerical method based on the evidence warrants pricing,F830.9
  17. Study on Combining Forecast Method for Personal Credit Scoring Based on Optimized Indexes,F832.4
  18. Risk Analysis Based on Copula-Kernel Model,F830.9
  19. Measurement and Applicalication of High Scattering Matters Optical Parameters Based on Multi-Optical Path Method,R318.0
  20. Research on Maintenance Process Modeling Methods of Civil Aircraft,V267
  21. Research on Real Estate Investment Risk of Tianjin,F293.3

CLC: > Aviation, aerospace > Aviation > Aeronautical Manufacturing Technology > Aircraft Manufacturing > Aircraft assembly > Aircraft assembly tools
© 2012 www.DissertationTopic.Net  Mobile