بهینه‌سازی چند هدفه جوشکاری اصطکاکی اغتشاشی با استفاده از روش طراحی تاگوچی، سطح پاسخ و الگوریتم ازدحام ذره

نوع مقاله : گرایش ساخت و تولید

نویسندگان

1 گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه آیت ا... بروجردی

2 گروه ساخت و تولید دانشگاه آزاد اسلامی واحد دزفول

چکیده

روش جوشکاری اصطکاکی اغتشاشی اولین بار در سال 1991 میلادی توسط مؤسسه جوشکاری بریتانیا به‌عنوان روش اتصال حالت جامد ابداع و برای جوشکاری آلیاژهای آلومینیوم به‌کار گرفته ‌شد. این روش، بازدهی انرژی بالا و سازگاری خوبی با محیط زیست دارد. در مجموع، فرآیند جوشکاری اصطکاکی اغتشاشی مناسب فلزاتی است که نقطه ذوب پایین داشته و جوشکاری ذوبی آن‌ها کیفیت مطلوبی ندارد. در این پژوهش بهینه‌سازی چند هدفه خواص مکانیکی در جوشکاری اصطکاکی اغتشاشی آلیاژ آلومینیوم AH12 1050 با استفاده از ترکیب روش‌های سطح پاسخ و بهینه­سازی چند هدفه ازدحام ذره انجام شده است. همچنین، برای طراحی آزمایش از روش تاگوچی استفاده شده است. در این روش متغیرهایی از جمله قطر پین ابزار، قطر شانه، سرعت دورانی، سرعت پیشروی و زاویه انحراف به‌عنوان متغیرهای فرآیند و 3 متغیر استحکام نهایی، چقرمگی و سختی در منطقه متاثر از حرارت و کار مکانیکی به‌عنوان توابع هدف انتخاب شده­اند. علاوه بر این تمام بررسی‌ها بر روی دو نوع پین استوآن‌های رزوه‌دار و مخروطی ساده و به‌صورت آزمایشگاهی انجام شده است. در نهایت نتایج بهینه‌سازی و دقت حداقل 93% پیش‌بینی نشان‌دهنده انطباق خوب مدل پیش­بینی کننده سطح پاسخ و آزمایش می­باشد.

کلیدواژه‌ها


عنوان مقاله [English]

The Multi-Objective Optimization of the Friction Stir Welding using the Taguchi Design Method, the Response Surface Model and the Particle Swarm Algorithm

نویسندگان [English]

  • Parviz Kahhal 1
  • Mohsen Ghasemi 2
  • Mohammad Kashfi 1
1 Mechanical engineering department, Engineering faculty, Ayatollah Boroujerdi University
2 Mechanical Engineering Department Dezful Branch, Islamic Azad University
چکیده [English]

The friction stir welding method was first developed in 1991 at the British Welding Institute as a solid-state bonding method and employed for welding aluminum alloys. This method has high energy efficiency and good compatibility with the environment. In general, the frictional stir welding process is suitable for metals with a low melting point, whose melting welding is not of good quality. In this research, multi-objective optimization of the mechanical properties in the friction welding of AH12 1050 aluminum alloy has been performed experimentally using a combination of response surface methods and multi-objective particle swarm optimization. The Taguchi method has also been utilized to design experiments with two types of threaded cylindrical and simple tapered pins. Pin diameter, shoulder diameter, tool rotational speed, tool feed, and tool deviation angle are selected as the process variables. Specimen strength, toughness, and hardness are considered as objective functions. The optimization results and a prediction accuracy of more than 93%, show a good agreement between the surface prediction model and the experiments despite the complexity of the process.

کلیدواژه‌ها [English]

  • Friction Stir Welding
  • Mechanical Properties
  • Response Surface Methodology
  • Multi-Objective Optimization


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