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Register a new userMachine Vibrations due to Bad Concrete Foundations
اهتزازات الآلات الناتجة عن سوء تنفيذ قواعدها البيتونية
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وعد عمران( باحث )
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تعد الأساسات أو القواعد التي تثبت عليها الآلات جزءاً مهماً من أجل التشغيل و الاستثمار الأمثل و زيادة الإنتاجية و التخلص من المشكلات الديناميكية كّلها. تأخذ الطرائق الميكانيكية في حساب أساسات (قواعد) الآلات و تصميمها، و كذلك المسائل المتعلقة بتثبيت الآلة الصلدة أهمية كبيرة بالنسبة إلى صانع الآلة و مخطط المشروع و مستثمر الآلة، حيث تؤثر قوى تحريض دورية. يعالج البحث مسألة حساب الترددات الذاتية للنظام من المعادلات التفاضلية بهدف تحديد منطقة العمل التي يجب أن تكون بعيدة عن مناطق الطنين المحتملة. يتضمن البحث دراسة حالة عملية لاهتزازات آلات نسيج، ناتجة عن اهتزازات القاعدة البيتونية التي تتوضع عليها الآلات؛ و ذلك بسبب الخلل في تنفيذ طبقات هذه القاعدة.
The foundations are considered an important part for optimal operation and investment, and for increasing productivty, and getting rid of all dynamic problems. The research aims to show that when concrete foundations are preformed in an inconsistent way, it will cause damaging vibrations in the machines. That was affirmed through a practical case.
References used
Grover, g, k, Mechanical Vibration, New chand, India, 1989, 468 pages
Hoizweissig, F.Dresig, H., Lehrbuch der Maschinedynamik, Fachbuchverlag Leipzig, 1983
EWINS, D.J., Modal Testing: Theory and Practice, London, 1995.313 pages
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