KO'P QATLAMLI KOMPOZIT PLASTINKALARNING XUSUSIY TEBRANISH CHASTOTASINI ANIQLASH: NAZARIY MODEL VA USULLAR TAHLILI
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Abstract
Ushbu maqolada ko'p qatlamli kompozit plastinkalarning erkin tebranish chastotalarini aniqlashning nazariy asoslari va usullari ko'rib chiqilgan. Klassik plastinka nazariyasi (Kirxgof–Love) va birinchi tartibli deformatsiyali nazariya (Reissner–Mindlin) asosida tuzilgan dinamik muvozanat tenglamalari keltirilgan, chegaraviy shartlarning asosiy turlari tahlil qilingan. Tebranish chastotasini aniqlashning analitik, energetik (Rayleigh), sonli (chekli farqlar, chekli elementlar, chekli hajmlar) va eksperimental usullari qiyosiy tahlil qilingan hamda ularning afzallik va cheklovlari aniqlangan. Natijalar ko'p qatlamli, anizotrop tuzilishga ega kompozit plastinkalar uchun chekli elementlar usulining eng samarali yondashuv ekanligini ko'rsatadi.
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