CAD/CAE Coordination Design Of Automobile Cover Forming

The mold design level of auto panels at certain degree determines the quality of the auto panels,automobile performance and appearance.At present,the auto panel's process design is now mainly carried out by combination method of designer's experience and computer calculation,which meets the demands from the present industry manufactures,but the long design period,low efficiency,unsatisfied design quality should not,be neglected.So the application of CAD/CAE is the only way out for auto panel industry and it is of great feasibility and theoretical value to develop a specified function module for auto panel mold under the wide-applied software in auto industry.Carries on the research of CAD/CAE integration technology on sheet forming,is that,before the actual die making,using the computer to simulation sheet's plastic deformation process,forecasting the rule of sheet distortion,as well as whether to have the flaw(the CAE process);then transform the analogue result to the mold design revise suggestion,optimizing the parameter of Formed Craft(the CAD process);Both of them will be completed before actual mold making,like this,we may both improve mold's design quality,reduces the cover mold's development cycle greatly,and may reduce the mold development the total cost,avoids the product having flaws most possibility.This article research the related problem about sheet simulation analysis process deeply by Dynaform,and the internal data structure of UG components digital-analog, Then develops the Automobile Cover CAD/CAE coordination design module based on UG.The main research content in this thesis is as follows:(1)The method and technology of UG secondary development are studied,the intact implementing scheme was obtained,such as the application program interface of UG NX based on Visual C++6 technology,the design and application of the main menu by UG/Open Manuscript too,visual design and application of the dialog box by UG/Open UIStyler,calling and realizing to model data of UG Open API,and etc..(2)Set up The addendum of auto panels was researched.The common sectional line of addendum was analyzed,and its mathematic model has been established as well as parametric design.The trial design that sectional line and control lines create the addendum was achieved,and then takes a auto top cover as example to introduce the operation of this function module.(3)An example was noted to introduce the operation of this function module.This module can transfers the Dynaform analysis module function directly in UG,and the been-molded craft model of UG can carries on the simulation analysis Directly,And carries on the corresponding formed craft analysis and optimization of analogue result.