تحلیل اجزای محدود فرآیند سخت گردانی استحاله ای سطحی با استفاده از منبع حرارتی متحرک بهمراه اعمال استراتژی کنترل سرعت جهت کاهش مشکل عیوب در لبه ها
الموضوعات :آرش خواجه 1 , سید احمد جنابعلی جهرمی 2 , حبیب دانش منش 3
1 - دانشگاه شیراز
2 - دانشگاه شیراز
3 - دانشگاه شیراز
الکلمات المفتاحية: تحلیل اجزای محدود, سخت گردانی سطحی, استحاله فازی,
ملخص المقالة :
در این تحقیق، از استراتژی کنترل سرعت، در تحلیل اجزای محدود فرآیند سخت گردانی استحاله ای سطحی فولاد S355 استفاده گردیده است. استراتژی معرفی شده، که بر مبنای کنترل سرعت حرکت منبع حرارتی بر اساس میزان دمای بیشینه موجود در سطح بنا نهاده شده است، کنترل ریز ساختار حاصل از این فرآیند را، که نتیجه دستیابی به یک تاریخچه حرارتی یکنواخت در طول مسیر پروسه است، امکان پذیر می کند. نتایج بدست آمده حاکی از آن است که استراتژی اتخاذ شده تاثیر بسزایی در دستیابی به هدف مورد نظر خواهد داشت. همچنین نتایج حاصل از شبیه سازی ها بدون استراتژی ذکر شده نشان می دهد که استفاده از ترکیبی همزمان از منبع حرارتی با ابعاد کوچکتر و توان بیشتر می تواند در غیاب این رویکرد به نتایج بهتری منجر گردد.
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