Experimental and Numerical Investigation on The Influence of Process Speed on The Blanking Process  

Oleh:

Baaijens, F. P. T. ; Goijaerts, A. M. ; Govaert, L. E.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Journal of Manufacturing Science and Engineering vol. 124 no. 2 (May 2002), page 416-419.
Topik: INVESTIGATION; experimental; numerical investigation; process speed; blanking process

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ93.3 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

In a previous work a numerical tool was presented which accurately predicted both process force and fracture initiation for blanking of a ferritic stainless steel in various blanking geometries. This approach was based on the finite element method, employing a rate - independent elasto-plastic constitutive model combined with a fracture criterion which accounts for the complete loading history. In the present investigation this work is extended with respect to rate - dependence by employing an elasto - viscoplastic constitutive model in combination with the previously postulated fracture criterion for ferritic stainless steel. Numerical predictions are compared to experimental data over a large range of process speeds. The rate - dependence of the process force is significant and accurately captured by the numerical simulations at speeds ranging from 0.001 to 10 mm / s. Both experiments and numerical simulations show no influence of punch velocity on fracture initiation.

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