Dissertation > Excellent graduate degree dissertation topics show

FEM Analysis and Structure Optimization Design for Shifting Spring

Author: WangYiXian
Tutor: SuGuiSheng
School: Suzhou University
Course: Mechanical Engineering
Keywords: FEM Shift sheet Optimization design Simulation Nonlinear
CLC: TS914.53
Type: Master's thesis
Year: 2010
Downloads: 26
Quote: 0
Read: Download Dissertation

Abstract


The shift sheet is a spring part in the torque cover of the power tools such as drills, it look like a bow and the top point of the bow is engages with the tooth in the inside track of the cover , the function is adjust the torque and location.The structure of the shift sheet define its elasticity, the elasticity influence the service life and the function. The shift will easy break if it is over tough and can’t use as a localizer if it is more soft. How to find out an optimized structure to ensure a necessary function at the time of new product development is very important, normally we will make a series of samples with different structures and make a physical test to solve the problem, but the defect is the test will last a long time and we can’t get a same test environment to make sure the test data is available. Engineering analysis is another way to solve these problems in the recent years, we can simulate the design part in the computer by the FEM method and change some parameters of the structure to get different result, and then we reach an optimized design after comparing them.This article base on ABAQUS which is famous nonlinear FEA software in this field to expatiate the application of structure optimize with ABAQUS in the new product development.We suppose that the root cause for the breaking of the spring sheet is just because the spring sheet has a rigid structure and when it bending, all the force are apply on the top point, after several times cycles, the sheet can’t stand the high stress and break for fatigue reason. After analysis the sheet by FEM and we got the result shows the stress on the top point is pretty higher than two wings, that indicated our assumption is right.Since we found the root cause of breaking through the FEM analysis, we can also change the model of spring sheet, and then simulate it by computer till we got the best solution of the design.We made some samples under the optimized result and install it in the product to do the life testing; we found that the new design sheet has met the requirement of durability and over the design use numbers.Compare the FEM to the traditional design method; it’s not hard for us to draw a conclusion that the FEM is helpful to find the solution way and short the product design cycle.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study of Interaction between Epoxy Molecules and Carbon Fiber Surface with Molecular Simulation,TB332
  3. Research on Mechanism Analysis and Modeling Simulation of Horizontal Well Tractor,P631.83
  4. Study on Springback of High-Strength Steel Stamping,TG386
  5. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  6. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  7. The Brake Performance of Hydraulic Retarder and Simualtion Research on Its Application for Aircraft Arrestment,TH137.331
  8. Development of the Platform for Compressor Optimization Design and Aerodynamic Optimization Design in the Transonic Compressor,TH45
  9. Analysis of Flexspline Stress and Tooth Wear in Harmonic Gear Drive,TH132.43
  10. Satellite Attitude Determination Based on Gyro and Star Sensor,V448.2
  11. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  12. Investigation of Turbine S2 Stream Surface Direct Problem Aerodynamic Optimization Design,V235.11
  13. Research on Orbital Control Method for Space Rendezvous and Docking,V526
  14. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  15. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  16. Single Neuron PID Control for Electro-Hydraulic Servo Unit of Ship Rudder,U666.152
  17. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  18. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  19. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  20. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  21. Numerical Simulation of Biomass Direct Reburning,TK16

CLC: > Industrial Technology > Light industry,handicrafts > Metal products industry > Hardware Products > Tools hardware > Electrical tools
© 2012 www.DissertationTopic.Net  Mobile