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The Research on Numerical Simulation of Forming Parameters for Automobile Frame Parts of Sheet Metal

Author: HuaCanQing
Tutor: LiJingYi
School: Nanjing University of Aeronautics and Astronautics
Course: Mechanical Design and Theory
Keywords: Nonlinear finite element Car Rebound Drawbead Forming Limit Stamping
CLC: U466
Type: Master's thesis
Year: 2005
Downloads: 123
Quote: 0
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Abstract


SHEET-FORMING nonlinear finite element package the floor skeleton of a car parts stamping process parameters for numerical simulation. According to the characteristics of the stamping process requirements and floor skeleton parts structure , the first step of the development of the parts stamping numerical simulation programs , including : mold baffle exercise drawbead section geometric properties , the rough geometric properties unit BHF changes. This article summarizes the structural features of the skeleton parts , select a suitable binder and process sidewall , the establishment of the finite element model of the stamping parts and select the appropriate parameters for numerical simulation , introduced solver platform . Numerical simulation : the first step skeleton parts stamping process simulation sheet loading forming uninstall rebound , trimming rebound , discussed in more detail sheet loading forming Z -displacement , the VM stress distribution , thickness distribution , equivalent the plastic strain situation , use forming limit diagram judgment board material is broken ; analysis sheet uninstall rebound nodal displacements , the amount of springback ; sheet rebound after trimming were also analyzed . Through the thickness of the molded parts , equivalent plastic strain , section numerical simulation results , a detailed analysis of the a different mold baffle exercise , whether the drawbead blank holder , different units of BHF and rough shape and size and other factors . skeleton stamping forming ; numerical simulation results by the the drawbead section shape parameter program to analyze changes in the geometric parameters of semi-circular and trapezoidal cross-section of the sheet forming loaded , uninstall rebound , trimming and springback . These studies have shown that the parts suitable stamping process parameters baffle stationary , blank holder laid semicircular drawing tendon unit BHF in 1MPa Cutaway rough . The study of the skeleton parts of the factory production of high-quality guidance.

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CLC: > Transportation > Road transport > Automotive Engineering > Automobile manufacturing process
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