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Register a new userComputer Assisted FEA of the Hollow Rectangular Telescopic Cantilever Beam Buckling
التحليل بالعناصر المنتهية لانحناء سهم الرافعة التليسكوبي ذي المقطع المستطيل الأجوف بمساعدة الحاسوب
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يُستخدم الجائز الكابولي التلسكوبي بشكل واسع في العديد من أنواع الروافع. و باعتبار أن هذه الجوائز مرنة و يمكن تمديدها و تقليصها ضمن ظروف تشغيل مختلفة ، يتغير الطول الكلي للجائز ديناميكياً ، مما يؤدي إلى خصائص اهتزاز متغيرة مع الزمن. ما سبق يجعل عملية نمذجة الجائز أمراً صعباً على الرغم من الاحتياجات المهمة لهذه النمذجة بهدف تحليل الاجهادات و التشوهات أثناء عمل الرافعة بمساعدة برامج الـ CAD. يناقش هذا البحث إمكانية إيجاد حل للمشاكل التصميمية التي تنشأ أثناء انهيار سهم الرافعة التلسكوبي و ذلك من خلال تطبيق تقنيات التحليل باستخدام العناصر المنتهية FEA وصولاً إلى الأبعاد المثلى للجائز و التي ستشكل التصميم الأمثل لسهم الرافعة التلسكوبي.
The telescopic cantilever beam is widely used in different types of cranes. These structures are flexible; it can expand or shrink according to the operating conditions. The dynamic changes of the total length of the structure lead to time-dependent vibrational characteristics. In practice, CAD modeling for this case is a challenging matter due to the nature of the problem of analyzing stress and deformation occurring during the operation of the crane. This research discusses the feasibility of finding a solution for the design problems initialized during the failure of the telescopic cantilever beam through the application of Finite Element Analyses (FEA) in order to find the ideal dimension of the structure which represents the best design for the telescopic cantilever beam.
References used
Hanafy M. Omar,"Control of Gantry and Tower Cranes ", Virginia Polytechnic Institute,Blacksburg, Virginia ,January 2003, 65
Jon Danielson ,"Mobile Boom Cranesand Advanced Input Shaping Control, Georgia Institute of Technology" , August 2008,33-36
Hiroki Fujita, and Hiroyuki Sugiyamab," Development of flexible telescopic boom model using ANCF sliding joint constraints with LuGre friction" , Tokyo University, 2012,78-82
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