با همکاری انجمن مهندسان مکانیک ایران

نوع مقاله : مقاله پژوهشی لاتین

نویسندگان

1 گروه مهندسی بیوسیستم، دانشکده کشاورزی، دانشگاه کردستان، سنندج، ایران

2 گروه مهندسی بیوسیستم، دانشگاه شیراز، شیراز

چکیده

هدف از انجام این تحقیق بهینه‌سازی عوامل طراحی ماشین‌های برداشت میوه برای برداشت موثر زیتون رقم شنگی بود. مدل جرم-فنر با یک درجه آزادی برای تعیین بسامد طبیعی و ضریب میرایی شاخه زیتون استفاده شد. یک شاخه‌تکان سوار که در آن ارتعاش از راه بازوی میل‌لنگی به شاخه و میوه انتقال می‌یافت برای ارزیابی مدهای ارتعاشی ساخته شد. به‌منظور تعیین تاثیر دامنه و بسامد ارتعاش بر میزان جداسازی میوه از شاخه یک آزمایش فاکتوریل (3×4) در قالب یک طرح کاملاً تصادفی اجرا شد. مد ارتعاشی با بسامد 10 هرتز و دامنه 80 میلی‌متر توان متوسط 92 وات را برای برداشت 95 درصد از میوه‌ها انتقال داد. برای برداشت موثر و منطبق بر استانداردهای سلامتی می‌توان از این مد ارتعاشی برای بازطراحی درخت تکان‌ها استفاده کرد.

کلیدواژه‌ها

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