Validation of FE simulation based on surface roughness model in micro-deep drawing

Manabe, Katsushi; Shimizu, Tetsuhide; Koyama, Hiroshi; Yang, Ming; Ito, Keisuke

doi:10.1016/j.jmatprotec.2007.10.081

Cited by 79 publications

(41 citation statements)

References 4 publications

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“…5. It was found that micro extra deep drawing can fabricate the micro cup with longer aspect ratio than conventional micro redrawing [8]. Figure 6 shows the material flow of blank by applying the ultrahigh pressure in micro extra deep drawing.…”

Section: Fe Simulationmentioning

confidence: 99%

“…These size effects cause the low formability in micro forming. Due to these difficulties in micro scale, no micro extra deep drawn cup except for micro cup with diameter of 0.5 mm and aspect ratio of 1.1 using micro redrawing process has been reported [8]. Thus, it is difficult to fabricate the micro parts with high aspect ratio using conventional micro forming techniques.…”

Section: Introductionmentioning

confidence: 99%

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Study on micro extra deep drawing process with ultrahigh fluid pressure and press motion controls

Sato

Kondo

Manabe

et al. 2015

MATEC Web of Conferences

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Abstract.A novel micro extra deep drawing process with ultrahigh fluid pressure and press motion controls are developed. A space between the blank and 1 st punch is made by the press motion at the 2 nd drawing stage and the ultrahigh pressure is applied so as to be disappeared this space. It can enhance a material flow into the die cavity because the ultrahigh pressure acts on the blank at side wall. In addition, a friction holding effect occurs, which prevents the thickness reduction at punch shoulder and side wall. Due to these mechanisms, the micro cup with aspect ratio of 2.0 can be successfully fabricated by micro extra deep drawing in FE simulation, although it cannot be fabricated by conventional micro deep drawing and micro hydromechanical deep drawing.

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Section: Fe Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on micro extra deep drawing process with ultrahigh fluid pressure and press motion controls

Sato

Kondo

Manabe

et al. 2015

MATEC Web of Conferences

View full text Add to dashboard Cite

show abstract

“…Regarding the machining system, the difficulties with positioning and transporting of raw material in the drawing process arise due to small sizes. Correspondingly, a combined blanking-drawing process was developed and realised by researchers [2]. Therefore, preparation of the raw material for the MDD and performance of the MDD can be conducted within one stroke.…”

Section: Introductionmentioning

confidence: 99%

An experimental and numerical study of micro deep drawing of SUS304 circular cups

et al. 2015

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-Micro deep drawing is a promising technology for mass production of complex 3D micro metal products. Significant size effects at a micro scale, however, obstruct application of this technology and block utilisation of traditional finite element method (FEM). Therefore, a micro tensile test system was developed to obtain accurate material properties considering size effects. Subsequently, a Voronoi blank model was developed for the micro scale simulation. Moreover, micro deep drawing experiments were conducted and their results were compared with the simulation results. The simulation results have a good agreement with the experimental data. Furthermore, the wrinkling at the cup mouth increases with the growth of grain sizes on the SUS304 sheets.

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“…One of these problems is positioning and transporting of raw material in drawing process. Correspondingly, a combined blanking-drawing process was developed and realised by researchers [2]. Therefore, preparation of raw material for deep drawing and performance of deep drawing can be conducted within one step.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study of micro deep drawing

Luo

Jiang

Wei

et al. 2015

MATEC Web of Conferences

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Abstract. Micro forming is a key technology for an industrial miniaturisation trend, and micro deep drawing (MDD) is a typical micro forming method. It has great advantages comparing to other micro manufacturing methods, such as net forming ability, mass production potential, high product quality and complex 3D metal products fabrication capacity. Meanwhile, it is facing difficulties, for example the so-called size effects, once scaled down to micro scale. To investigate and to solve the problems in MDD, a combined micro blanking-drawing machine is employed and an explicit-implicit micro deep drawing model with a voronoi blank model is developed. Through heat treatment different grain sizes can be obtained, which affect material's properties and, consequently, the drawing process parameters, as well as produced cups' quality. Further, a voronoi model can provide detailed material information in simulation, and numerical simulation results are in accordance with experimental results.

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Validation of FE simulation based on surface roughness model in micro-deep drawing

Cited by 79 publications

References 4 publications

Study on micro extra deep drawing process with ultrahigh fluid pressure and press motion controls

Study on micro extra deep drawing process with ultrahigh fluid pressure and press motion controls

An experimental and numerical study of micro deep drawing of SUS304 circular cups

Experimental and numerical study of micro deep drawing

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