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alkej-203
Experimental and Analytical Study of Bending Stresses and Deflections in Curved Beam Made of Laminated Composite Material
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Abstract

 

Theoretical and experimental methodologies were assessed to test curved beam made of layered   composite material. The maximum stress and maximum deflection were computed for each layer and the effect of radius of curvature and curve shape on them. Because of the increase of the use of composite materials in aircraft structures and the renewed interest in these types of problems, the presented theoretical assessment was made using three different approaches: curved beam theory and an approximate 2D strength of material equations and finite element method (FEM) analysis by ANSYS 14.5 program for twelve cases of multi-layered cylindrical shell panel differs in fiber orientations and number of layers. One case of E-glass composite material was experimentally made and tested to verify the relation between applied load and maximum deflection and four  models were made of poly carbonyl to determine stresses under bending loads in polar scope, all results were compared with each other, the percentage accuracy was very good. The curved beam theory and strength of material equation formulas results were reasonable for the bottom surface, while it seems not enough for the top surfaces. Also, results explained positions and cases more affected by delaminating and the most preferred part of ellipse shape beam in resisting loads.

 

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Publication Date
Thu Oct 25 2018
Journal Name
Journal Of Planner And Development
(الاستخدامات الحضرية للمياه في المدن العراقية حالة الدراسة (مدن الفرات الأوسط
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Publication Date
Sun Jan 03 2010
Journal Name
Journal Of Educational And Psychological Researches
اثر الاسئلة السابرة في تحصيل طلاب الصف الرابع العام لمادة التاريخ
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The importance of teaching methods and procedures comes from the nature and significance of the questions raised inside the classroom. That is, because questions, in fact, are the means of communication and interaction in the class situation. Therefore they are considered as indispensible elements in any teaching approach. Furthermore, it is noticeable that the majority of teachers fail in using them, for questions are often casted spontaneously and without pre-planning. Hence, a delay may occur in realizing the pre-set objectives, and let alone the dominance of stereotyped questions, especially when the teachers focus on a type of question which can be directly answered from the text-book.

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Publication Date
Thu Jul 02 2009
Journal Name
Journal Of Educational And Psychological Researches
توظيف رســوم الاطفال كوحدات تصميمية تعليمية في اقمشة ستائر رياض الاطفال
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مشكلة البحث

ان التصميم هو توالد افكار عدت اساس له حيث انها اشياء لها معنى لامور اقتضت الايعاز باعداد هذه التصاميم، اما المصمم فهو الشخص الملم بمباديء واسس التصميم من اجل تنفيذ هذه الافكار بطرق علمية مدروسة، الا ان هناك سؤالا يطرح هل بالامكان لاي شخص ان يرسم فكرة تصميمية؟

الجواب هو نعم فالتصميم ليس مقتصرا على المصمم فحسب بل ان باستطاعة أي شخص ان يعبر عن ما بداخله من افكار سواء ك

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Publication Date
Tue Jan 29 2019
Journal Name
Arab Science Heritage Journal
منهج النديم البغدادي في فهرسة دواوين الشعر (حتى نهاية العصر الأموي )
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الحديث عن محمد بن إسحاق النديم حديث عن عالم جليل كان له فضل تصنيف سفر خالد من أسفار المعرفة و العلم و سجل ضم عناوين ما أنتجته الأمة العربية الإسلامية في وقت عزها و مجدها و سطوع كوكبها في سماء الدنيا ، فجاء هذا الكتاب جامعا نافعا في بابه .

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Publication Date
Sun Apr 23 2023
Journal Name
مجلة الجامعة العراقية
قضايا أخلاقية في العل م اخلاقيات العلم والتكنولوجيا وتدريس الكيميا ء
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تهدف هذه المقالة إلى توضيح أخلاقيات العلم وضوابطه التي يجب على من يعمل في هذا المجال أن يكون متحلي بها حتى يحافظ على القيم والأخلاق الفاضلة والموروثة من الآباء والاجداد والنابعة من الصالحين والاخيار لديم ومة الحياة بأفضل وجه وكما يتمناه الكل وكذلك عدم تجاوز الحدود التي تؤدي إلى الأض ا رر بالمجتمع والبيئة . وتوضيح الحدود الغير مسموح بتجاوزها في مجال العلم والتكنولوجيا ومن هذه الأخلاقيات أو الضوابط التي يجب أن

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Publication Date
Sun Jul 02 2006
Journal Name
Journal Of Educational And Psychological Researches
اثر العصف الذهني في تحصيل طلبة الصف الثاني متوسط بمادة التاريخ
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أولاً : مشكلة البحث :

أن مشكلة البحث تتمثل بوجود حاجة لتحسين الطرائق والأساليب المتبعة في التدريس ولذلك اتجهت البحوث في مجال التربية وعلم النفس إلى تحديد طرائق التدريس المناسبة لتطوير التفكير.         

ومن هذه الأساليب الحديثة  العصف الذهني بوصفها من اكثر الطرق التي قد  تؤدي إلى تحفيز الطلبة وأثاره القدرات الإبداعية لديهم في حقول التربية والتعليم وا

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Publication Date
Wed Nov 28 2018
Journal Name
Arab Science Heritage Journal
اعتراضات اعتراضات الـخوارزمي الـنحوية في كتـابه التخمـير عـلى الـزمـخشـري ( قسم الأسماء )
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Abook of alzmkchri (AL-Mefsal) considers one of the most book familiarities among grammarians whom begin to explain it importance kitab AL-Takhmair for Khwarizmi separated opinions in grammatical schools that dealt with.

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Publication Date
Sun Dec 01 2013
Journal Name
Journal Of Economics And Administrative Sciences
تأثير تقيم اداء اعضاء قنوات التوزيع في رضا الزبون–بحث ميداني
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Abstract

The distribution is one of the elements of the marketing mix key by which companies can to deliver their products through private channels to all customers in right time and right place to check though in which the levels desired by customer satisfaction, the and purpose of the discussion dealt with the preparation of analytical studies to explain the impact of live performance of distribution channels in achieve customer satisfaction in industrial companies, as well as the diagnosis and the reality of the research variables in companies under study and describe the kind of relationship between changers Home on the one hand and the relationship between the variables sub on the other hand, represe

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Crossref
Publication Date
Sat Mar 01 2014
Journal Name
Journal Of The College Of Languages (jcl)
Comparación entre los dos gigantes de la literatura universal "Miguel de Cervantes y William Shakespeare"
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The literature in general, such as the spanish literature as british literature presence lot of literary figures giant that managed its continuing work that leaves lasting impression and clear in all fields of literary world throughout history, among these writers giants can remind great writer spanish (Miguel de Cervantes) and the great british writer (William Shakespeare), this study is about them.

We can say that there are a lot of studies , works and gossip , whether literary or non- literary show how the close relationship that bound both Cervantes and William Shakespeare, although they did not meet personally never, it was not able to critics that the sweep of the differences and similarities that was between the two, becau

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Publication Date
Tue Oct 06 2020
Journal Name
College Of Islamic Sciences
الصناعة وأثرها في بلاد المشرق الإسلامي خلال العصر العباسي 132- 656هـ
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The process of doing many kinds of industries , crafts , professions around Islamic Arabian State , they enable us to say that Arab Muslims over their homelands had been occupied various types of crafts and manufacturing before emergence Islam . Moreover Islam encouraged to work within manufacture field . And These matters were clarified through verses of the Holy Qur’an and honored prophetic guidance ( Sunna  )  . Whereas Arab Muslims applied principle “ Free of Business “  . They admitted to different social groups such as pact – fellows people  to profession or craft which they desire to work . We have to not forget that Arab Muslims had broken all restraints and shackles which had restricted the worker bef

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