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Register a new userComputer modeling of reducers gearboxes for large axes vehicles and analysis with the help of finite element
النمذجة الحاسوبية لمخفضات علب السرعة المخصصة لمحاور الآليات الكبيرة و تحليلها بمساعدة العناصر المنتهية
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منذر إسبر( باحث )
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إن استخدام المنهجيات و التقنيات الحديثة كنهج جديد لتقييم عملية التصاميم الهندسية في الصناعة دفع إلى استخدامها في تقييم تصميم علب السرعة في الآليات الكبيرة . إن علبة السرعة المصممة خصيصا للآليات الكبيرة العاملة في ظروف القيادة على الطرق الوعرة تحتاج إلى محور قنطري portal axle يتم تثبيته بين العجلة و عمود المحور بهدف إعطاءه ارتفاعاً إضافياً للآلية عن الأرض. في هذه الدراسة، سوف يتم تحليل المحور القنطري باستخدام طريقة العناصر المنتهية (FEM). و سينفذ ذلك على ثلاثة مجموعات مختلفة لنظام المسننات المعشقة التي يجري تحليلها و هي : المسننات المعشقة بدون مسنن وسيط, مع مسنن وسيط واحد, و مع مسننين وسيطين. كما يتم محاكاة تحليل الإجهاد الساكن لـ FEM على ثلاث مجموعات مسننة معشقة مختلفة لدراسة إجهاد انحناء الأسنان و سلوك إجهاد الاحتكاك للمسننات المعشقة في مواقع زاوية مختلفة تتراوح من °0 الى °18 درجة.
The use of modern methodologies and techniques a new approach to evaluate the process of engineering design in the industry pay to use in evaluating the speed in large cans mechanisms design. The gearbox that is designed for big vehicles for off-road driving conditions need portal axle which installed between the wheel and the axle shaft to give higher ground clearance to the vehicle. The modeling and simulation of spur gear which contacted with portal axle is important to predict the actual motion behavior, but it's so complicated to study. In this study, it'll analysis the portal axle by using finite element method (FEM), modal analysis will simulated on three different combinations of gear train system, the three gear trains being analyzed are: gear train without idler gear, one idler gear and two idler gears. FEM static stress analysis will also simulated on three different gear train to study the gear teeth bending stress and contact stress behavior of the gear trains in different angular positions from °0 to °18 degree.
References used
T.BRUNS ;E.SCHAFER, modeling and identification of an all-terrain vehicle, International Journal of vehicle systems modeling and testing,(2007) 276-295
A.BERLIOZ ; P.TROMPETTE, Solid mechanics using the finite element method, ISTE Ltd and John Wiley & Sons,Inc,(2010) 29-35
S.DRACA, Finite element model of a double-stage helical gear reduction, Master's thesis, University of Windsor,(2006) 311-328
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طريقة العناصر المنتهية
Finite element method
مقاربة معدلة
التحليل اللاخطي للإطارات المستوية و الفراغية
مصفوفة توابع الاستقرار
برنامج في بيئة الماتلاب
modified method
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second order analysis
stability function approach
program in Matlab
المزيد..
يحتوي البحث على دراسة قمنا بها حول تاثير الانفجارات على منشآت البيتون المسح والسلوك الفعلي لهذه المنشآت نتيجة الأضرار الحاصلة.
بالاضافة لعملية تقييم السلوك الحاصل وتوقع المشاكل المستقبلية ودراستها باستخدام النمذجة الرقمية باعتماد برامج النمذجة.
It is a cross in the hydraulic systems with long pipes case modeling of the hardest and most important cases in search. Of the most important and is considered Query to achieve study the changing resistance model is used to describe the changing liqu
id flow in the tube. As described by knowing the nature of the shear stress to the pipe wall and also know the nature of the flow ( laminar or turbulent ). The results of simulations of hydraulice shock caused by the sadden move of the hydraulic control valve which studied in the following cases:
1- Hard to improve the discharge of the pump rate.
2- Improve the discharge of the pump variable rate finally; compare the results of computer simulations with experimental results.
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