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Effect of Underlay Stiffness on Cutting Profile of Polycarbonate Sheet during Wedge Indentation Process

TitleEffect of Underlay Stiffness on Cutting Profile of Polycarbonate Sheet during Wedge Indentation Process
Publication TypeJournal Article
Year of Publication2555
Tertiary Authorsเสกสรร ไชยจิตต์
JournalJOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING
Volume6
Issue7
Pagination1168-1179
Date Published2012
Type of Articleบทความวิจัย
ISSN1881-3054
Accession Number WOS:000310846300013
KeywordsElasto-Plastic FEM, Flexible Underlay, Friction, Shearing, Wedge Indentation
Abstract

This paper reports on the cutting characteristics of a polycarbonate (PC) sheet stacked on a flexible underlay by a wedge indentation. In order to investigate the effect of underlay stiffness on sheared profile of PC sheet, the stiffness ratio k(r) in the thickness direction was varied. Indentation of a 42 degrees center bevel blade into a 0.5 mm thickness PC sheet that was stacked on the flexible underlay was carried out experimentally and numerically. Deformation profile of wedged PC sheet was observed by a CCD camera in order to reveal the effect of underlay on the cutting performance of the PC sheet. On the experimental works, it was found that the underlay mechanical properties affected the cutting load response and deformation features of the PC sheet. To discuss the effect of underlay stiffness on the deformation profile of the PC sheet, a finite element method (FEM) analysis with elasto-plastic model was conducted. Through the experiment and FEM simulation, it was revealed that the deformation profile of wedged PC sheet was remarkably related to the bent-up angle of the PC sheet, which was mainly caused by sinking and lateral elongation of the underlay. Moreover, in order to obtain a smart profile of the PC sheet, the stiffness ratio kr must be chosen in a suitable range.

URLhttps://www.jstage.jst.go.jp/article/jamdsm/6/7/6_1168/_article
DOI10.1299/jamdsm.6.1168
Reprint EditionMitsomwang, P (reprint author)