نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

2 استادیار، دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

3 استاد، دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران، تهران، ایران

چکیده

امروزه استفاده از ورق‌های دولایه‌ی فلزی راه‌حلی مناسب برای تولید محصولاتی چند کاربره محسوب می‌شود. به‌طور کلی ورق‌های دولایه فلزی دارای ویژگی‌هایی از قبیل بهبود شکل‌پذیری ورق‌ با شکل‌پذیری کم، افزایش مقاومت در برابر خوردگی و سایش، کاهش وزن و هزینه قطعات تولیدی می‌باشند. به‌همین منظور مطالعه میزان شکل‌پذیری ورق‌های دولایه‌ی فلزی، دارای نقشی اساسی در طراحی عملیات شکل‌دهی ورق‌های فلزی می‌باشد. نمودار حد شکل‌دهی روشی مناسب برای تعیین قابلیت شکل‌پذیری ورق‌های فلزی در فرآیندهای شکل‌دهی فلزات می‌باشد. هدف در این کار پژوهشی، انجام آزمایش تجربی برای تعیین نمودار حد شکل‌دهی ورق‌های دولایه‌ی فلزی بوده است. نمودار حد شکل دهی به‌عنوان یک معیار برای پیش بینی وقوع حالت گلویی شدگی که در نهایت منجر به پارگی ورق فلزی می‌شود به‌کار گرفته خواهد شد. در تحقیق حاضر، نمودار حد شکل‌دهی ورق دولایه‌ی فلزی آلومینیم-مس برای نخستین بار به‌صورت تجربی به‌دست آمده است.

چکیده تصویری

کلیدواژه‌ها

عنوان مقاله [English]

Experimental determination of forming limit diagram in Aluminum-Copper two-layer metallic sheets

نویسندگان [English]

  • Ehsan Karajibani 1
  • Ramin Hashemi 2
  • Mohammad Sedighi 3

1 School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran

2 School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.

3 School of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran.

چکیده [English]

Nowadays, two-layer metallic sheets have become as a useful solution to produce multi-functional products. Generally, two-layer metallic sheets can have advantageous characteristics such as increasing formability of the low formable component, improving the corrosion and wear resistance and reducing weight and cost of manufactured products. Therefore, understanding the forming limit behavior of a two-layer metallic sheet has an essential role in the design of sheet metal forming processes. Forming limit diagram (FLD) is a suitable method to predict the formability of metallic sheets in sheet metal forming operations. The aim of this research was to determine the forming limit diagram in Aluminum-Copper two-layer metallic sheets experimentally. The forming limit diagram can be used as a criterion in order to predict necking initiation which may cause tearing in sheet metal forming processes. In this paper, the forming limit diagrams of Aluminum-Copper two-layer metallic sheets have been obtained through an experimental procedure for the first time.

کلیدواژه‌ها [English]

  • Two-Layer Metallic Sheet
  • forming limit diagram
  • Experimental study
  • Formability

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