تحلیل ارتعاشات غیرخطی متقارن‌محوری واداشته از حرارت در پوسته‌ی کروی ساخته‌شده از مواد هدفمند

نوع مقاله: مقاله علمی پژوهشی

نویسندگان

1 دانشجوی رشته مهندسی مکانیک دانشگاه صنعتی امیرکبیر

2 گروه مهندسی مکانیک، دانشگاه صنعتی امیرکبیر

چکیده

خواص پوسته از رابطۀ کسر حجمی به‌دست‌آمده، وابستگی حرارتی از رابطه تولوکیان لحاظ شده است. بارگذاری متقارن محوری میباشد. سطح سرامیکی در دمای ثابت و سطح دیگر در دمای پایینتر (یا عایق) است. توزیع دما از معادله گذرای غیرخطی غیرکوپل انتقال حرارت محاسبه میشود. از تئوری مرتبه اول پوسته و روابط کرنش-تغییرمکان فون-کارمن برای استخراج معادلات استفاده گردیده، معادلات دینامیکی از اصل همیلتون و روش ریتز بدست آمده و بوسیله روشهای نیومارک و نیوتن-رافسون حل شدهاست. معادله انتقال حرارت با روش تفاضل محدود و کرنک-نیکلسون حل شده است. اثر توزیع خواص، نوع بار حرارتی و هندسه در پاسخ بررسی شدهاست.

کلیدواژه‌ها

موضوعات


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