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논문 기본 정보

자료유형
학술대회자료
저자정보
Thomas Kroiss (University of Erlangen-Nuremberg) Ulf Engel (University of Erlangen-Nuremberg) Marion Merklein (University of Erlangen-Nuremberg)
저널정보
한국소성·가공학회 기타자료 NUMIFORM 2010
발행연도
2010.6
수록면
312 - 319 (8page)

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초록· 키워드

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In this paper, a methodic approach is presented for the determination and modeling of the axial deflection characteristic for the whole system of stroke-controlled press and tooling system. This is realized by a combination of experiment and FE simulation. The press characteristic is uniquely measured in experiment. The tooling system characteristic is determined in FE simulation to avoid experimental investigations on various tooling systems. The stiffnesses of press and tooling system are combined to a substitute stiffness that is integrated into the FE process simulation as a spring element. Non-linear initial effects of the press are modeled with a constant shift factor. The approach was applied to a full forward extrusion process on a press with C-frame. A comparison between experiments and results of the integrated FE simulation model showed a high accuracy of the FE model. The simulation model with integrated deflection characteristic represents the entire process behavior and can be used for the calculation of a mathematical process model based on variant simulations and response surfaces. In a subsequent optimization step, an adjusted process and tool design can be determined, that compensates the influence of the deflections on the workpiece dimensions leading to high workpiece accuracy. Using knowledge on the process behavior, the required number of variant simulations was reduced.

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Abstract
INTRODUCTION
DEFLECTION OF PRESS AND TOOLING SYSTEM
MODELING OF PRESS AND TOOLING SYSTEM CHARACTERISTICIN PROCESS SIMULATION
DETERMINATION OF DEFLECTION CHARACTERISTIC
PROCESS MODELING AND OPTIMIZATION
CONCLUSIONS AND OUTLOOK
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2014-550-003335828