Dissertation > Excellent graduate degree dissertation topics show

Influence of the Weld Line on Numerical Simulation of Tailor-welded Blank Forming Process and Experimental Study

Author: WuXiaoFeng
Tutor: ChenZuo
School: Jiangsu University
Course: Mechanical Manufacturing and Automation
Keywords: Tailored Blanks Finite element model Weld Extrude
CLC: TG456.7
Type: Master's thesis
Year: 2008
Downloads: 54
Quote: 0
Read: Download Dissertation

Abstract


Tailored Blanks automobile lightweight technology is an important development direction, but the presence of different sheet thickness and material properties as well as weld, resulting in very different Tailored Blanks with ordinary light board during the forming process, the formability greatly reduced. With the development of computer technology and finite element ideas in the product design process, more and more using the finite element method to simulate the product design and manufacturing process, in order to improve the product structure and forming process. However, compared with ordinary light board, Tailored Blanks material welded by the board more than two or two and one or several material mechanical properties and the shape of the base material is not the same weld, which gives limited element modeling cause great difficulties. In this paper, a systematic study of the weld model Tailored Blanks shaping the relationship between the structure of the Numerical Simulation of Tailored Blanks. TWB structure is mainly reflected in the TWB having different thickness ratio, the type Bohou area ratio and the type of weld width. Through specific parts forming process simulation, and analysis the three weld models in the forming process, the results of numerical simulation and stamping test results are compared to obtain precise of Tailored Blanks weld model approach. This article reads as follows: tensile specimen tensile test, to get Tailored Blanks and mechanical properties of the base material, behind analog parameters of longitudinal weld Tailored Blanks. And mechanical properties analysis, the weld Tailored Blanks formability have a great impact, therefore need to weld modeling method in the finite element model of the simulation results to consider in detail. Uniaxial tensile process of transverse weld Tailored Blanks finite element simulation, three models of tailor welded blanks were used, the first only consider the location of the weld, ignoring the weld material properties and shape, and the second is to consider weld location at the same time, considering the weld material properties, the weld using shell elements, and the third is to consider the position of the weld at the same time, take into account both the weld shape of weld material properties, weld unit. Three Tailored Blanks model base metal shell element, the connection between the shell and the unit is coupled coupled together by different degrees of freedom of the shell element and unit. By moving the weld failure when tensile displacement, dangerous point three simulation results to explore to study the weld model the tensile simulation results Tailored Blanks structure the relationship between. Under a different thickness than, Bohou area ratio and width of the weld, the weld models have different effects on the simulation results. The above three weld model, the typical common parts box shaped part Tailored Blanks drawing forming process simulation, material flow weld line movement, the maximum reduction rate and computation time compared to analyze the different welding seam finite element model of the numerical simulation results in specific parts stamping process influence the size and computational efficiency. Rectangular box deep drawing process, the real impact test to compare the simulation and experimental results, the closest unit weld model with the experimental results, the shell elements and ignore the weld seam model on most of the results are similar the.

Related Dissertations

  1. The Research on Peasant Legal Education Innovation in New Rural Construction,D920.0
  2. Injection Process Analysis and Optimized Deign of MP4 Product Based on the Moldflow Software,TQ320.662
  3. The Establishment and Preliminary Application of the Three-dimensional Finite Element Model of Ankle Joint,R687.3
  4. Residual Stress Research of the Laminates of Integral Multilayer-Wrapped Pressure Vessel,TH49
  5. Research on the Design of Scanners for Pipeline Complex Weld Inspection,TG439.9
  6. Studies on the Influence of Rare Earth Ce on Microstructure and Properties of Huge Heat Input SAW Seam Metal,TG445
  7. Research of Key Technologies of 3D Virtual Simulation Platform of Sheet Metal Forming,TG659
  8. The Research on Test System of the Relay’s Electrical Properties and Experiment,TM58
  9. Enclosed space complex three-dimensional simulation of diffusion of gas leaks,TP391.9
  10. Structured light vision sensor based on real-time tracking control of the weld,TG441
  11. Phased array ultrasonic testing optimization of key parameters,TP274.53
  12. Deformationand Strength Characteristics of Glass Fiber-Reinforced Soil Studied by Experiments,TU521.3
  13. Composite materials by mechanical shear load connector pin load distribution of,V229.7
  14. Special pipe pipeline magnetic flux leakage testing technology research conditions,TE973.6
  15. Aluminum AC pulse MIG welding with,TG444
  16. Double-crystal copper grain boundary energy and the structural stability of the molecular dynamics simulation,TG142.1
  17. Soft abrasive flow precision machining abrasive impact behavior and solid - liquid two-phase flow characteristics,TG664
  18. Symmetric multi- cell membrane wall weld GMAW welding group norms and deformation analysis,TK226.2
  19. Vehicles and branch steel box arch bridge static and dynamic computational analysis and experimental space,U441
  20. Model Test on Vehicle-Bridge Couped Vibration for the Long-span Bridge with High-pier,U441.3
  21. Electron beam welded joints under fatigue properties and residual stress of,TG405

CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding process > Special welding > Laser welding
© 2012 www.DissertationTopic.Net  Mobile