Numerical Analysis of the Deformation of a Shearing Machine Tool under Excessive Blade Clearance
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JACM-7-2_012
تاریخ نمایه سازی: 9 خرداد 1400
Abstract:
Guillotine shearing machines for metal sheet may be inadvertently operated at increased blade clearance. Typical cases were studied using commercially available finite element software with an explicit solver. Loads causing elastic deformation to the machine structure arise from plastic deformation of the sheet metal being processed, its behavior being modelled by modified Johnson-Cook law. Excessive clearance was found to overload the machine considerably compared to normal clearance, owing to considerable lateral forces. As a result, the guillotine and much less so the base of the machine, undergo oscillatory deformation and the sheet is partly sheared and mostly bent. Such analysis helps the designer understand structural issues of the machine tool in extreme situations and modify the design appropriately.
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Authors
Fotios Bantes
Manufacturing Technology Section, School of Mechanical Engineering, National Technical University of Athens, Heroon Polytehniou ۹, ۱۵۷۸۰ Athens, Greece
George-Christopher Vosniakos
Manufacturing Technology Section, School of Mechanical Engineering, National Technical University of Athens, Heroon Polytehniou ۹, ۱۵۷۸۰ Athens, Greece
Protesilaos Kostazos
Manufacturing Technology Section, School of Mechanical Engineering, National Technical University of Athens, Heroon Polytehniou ۹, ۱۵۷۸۰ Athens, Greece
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