التحليل بالعناصر المنتهية لانحناء سهم الرافعة التليسكوبي ذي المقطع المستطيل الأجوف بمساعدة الحاسوب
Abstract
يُستخدم الجائز الكابولي التلسكوبي بشكل واسع في العديد من أنواع الروافع. وباعتبار أن هذه الجوائز مرنة ويمكن تمديدها وتقليصها 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 والتشوهات أثناء عمل الرافعة بمساعدة برامج الـ CAD. يناقش هذا البحث إمكانية إيجاد حل للمشاكل التصميمية التي تنشأ أثناء انهيار سهم الرافعة التلسكوبي وذلك من خلال تطبيق تقنيات التحليل باستخدام العناصر المنتهية FEAوصولاً إلى الأبعاد المثلى للجائز والتي 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.Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 �ttps://creativecommons.org/licenses/by-nc-sa/4.0/
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.