شبیه‌سازی اکستروژن لوله فولاد زنگ‌نزن آستنیتی AISI 304 و مقایسه نتایج با روابط کران بالا

نوع مقاله : علمی و پژوهشی

نویسندگان

1 دانشگاه صنعتی مالک اشتر

2 دانشگاه صنعتی مالک اشتر اصفهان

چکیده

هدف پژوهش، بررسی اثر دمای اولیه شمش، سرعت اکستروژن، نسبت اکستروژن و زاویه قالب روی فرایند اکستروژن لوله فولاد زنگ‌نزن 304، به‌ویژه نیروی اکستروژن و رسیدن به پارامترهای بهینه برای انجام فرایند بود. برای شبیه‏سازی نرم‌افزار آباکوس استفاده شد. دوازده نمونه باشرایط اولیه مختلف بررسی شد. باتوجه به تقارن محوری فرایند، برای شبیه‏سازی مدل متقارن محوری دوبعدی استفاده شد. همچنین برای حل فرایند، حل جفت‌شده مکانیکی-حرارتی استفاده شد. برای رسیدن به درجه‏های آزادی موردنیاز، از المان CAX4RT استفاده شد. دمای اولیه شدیدترین اثر را روی نیروی اکستروژن دارد. نتایج شبیه‌سازی با نتایج تحلیل ریاضی انطباق خوبی را نشان داد.

کلیدواژه‌ها

عنوان مقاله [English]

Numerical Simulation of Tube Extrusion Process of AISI304 and Comparing with Upper Bound Solutions

نویسندگان [English]

  • Mohammad Reza Bahmani 1
  • Khosro Farmanesh 2
  • Gholamhossein Borhani 2
1 Malek-e Ashtar University of Technology
2 Malek-e Ashtar University of Technology
چکیده [English]

The study purpose was to evaluate the effect of initial billet temperature, extrusion speed, extrusion ratio and angle on the tube extrusion process of AISI304, particularly the extrusion force, and achieve optimal parameters. Abaqus software was used for the simulation purpose. 12 samples were evaluated with different initial conditions. Two-dimensional axisymmetric model was used to simulate the process, due to the axial symmetry of the process. Mechanical-thermal coupled solution was used for process solution. Also, CAX4RT elements were used for achieving all the degrees of freedom. The initial temperature was found to have the strongest effect on the force.

کلیدواژه‌ها [English]

  • Tube Extrusion
  • AISI 304 Stainless steel
  • simulation
  • Upper Bound Method

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