Using shear damage theory for simulation and prediction of dead zone in aluminum extrusion molds for Aerospace industries

  • سال انتشار: 1388
  • محل انتشار: هشتمین کنفرانس انجمن هوافضای ایران
  • کد COI اختصاصی: AEROSPACE08_316
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1564
دانلود فایل این مقاله

نویسندگان

A. Hosseini Hashemi

M.s student of mechanic Eng - Manufacturing Engineering Group, Mechanical Engineering Department, College of engineering, University of Tehran, Tehran, Iran

K. Abrinia

Associate Professor - Manufacturing Engineering Group, Mechanical Engineering Department, College of engineering, University of Tehran, Tehran, Iran

M.K Besharati

Associate Professor - Manufacturing Engineering Group, Mechanical Engineering Department, College of engineering, University of Tehran, Tehran, Iran

چکیده

Aluminum and alloys of aluminum have a wide application in Aerospace industries. There are many methods for production of aluminum objects. Such these methods, is the extrusion. Dead zone is the main problem in the aluminum extrusion molds because it makes pressure high and final objects from extrusion process have bad surface roughness. In this article presented a new method for simulation and prediction of dead zone in extrusion molds. This simulation is based on shear damage theory that it’s gotten from ductile metal theory. Shear damage is the main reason for creating dead zone in extrusion molds so we can optimize these molds without dead zone problem then we can produce aluminum objects with best quality. This mold analyzed with Dynamic Explicit in ABAQUS.CAE software after deleting those elements with shear damage between 0.8 to 1 the new boundary was appeared then with new boundaries of result contours, the new optimized mold was designed. This optimized mold shows some valuable results such these; extremely reduce in working pressure and best surface quality on final extrusion objects. Experiment tests are showing the exactitude of this new method results. This method can use directly to other extrusion molds.

کلیدواژه ها

Dead zone, Fracture energy, Shear module

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.