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The Effect Of Center Distance Change On Gear Teeth Engagement And Stress Analysis
تأثير تغير مسافة المراكز على تعشيق أسنان التروس وتحليل الإجهادات المتولدة فيها

Author: Omar D.Mohammad عمر داود محمد
Journal: AL-Rafdain Engineering Journal (AREJ) مجلة هندسة الرافدين ISSN: 18130526 Year: 2008 Volume: 16 Issue: 5 Pages: 70-81
Publisher: Mosul University جامعة الموصل

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Abstract

Abstract The present study concentrates on the changes in gear teeth engagement and stress analysis of meshing teeth when gearing system is operated at a non-standard extended center distance. (Ansys) programming using F.E.M have been applied for stress analysis on a gear model. Many cases with changing center distance have been studied. It is clear that the operating center distance was increased; the stresses generated on tooth will be increased dependently.Keywords : Spur gear, Center distance, Teeth engagement, Stress analysis

يتمحور هذا البحث حول التغييرات التي تطرأ على عملية تعشيق الأسنان وتحليل الإجهادات المتولدة فيها عند تشغيل نظام التروس بمسافة مراكز غير قياسية. وقد تم إستخدام برمجة(Ansys ) التي تعتمد طريقة العناصر المحددة في تحليل الإجهادات لنموذج الترس. وقد تمت دراسة عدد من الحالات عند تغير مسافة المراكز. ويتضح من هذه الدراسة أنه بزيادة مسافة المراكز التشغيلية تزداد قيم الإجهادات المتولدة على السن المعشق.


Article
EFFECTS OF ROTATIONAL SPEED, CENTER DISTANCE AND DIAMETER RATIOS ON THE DYNAMIC RESPONSE OF PULLEY-BELT SYSTEM DEPENDS ON VIBRATION ANALYSIS

Authors: Ali Raad Hassan --- Khalid Mohsin Ali
Journal: Al-Qadisiyah Journal for Engineering Sciences مجلة القادسية للعلوم الهندسية ISSN: 19984456 Year: 2017 Volume: 10 Issue: 4 Pages: 574-590
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

This paper presents the dynamic response related to varying in indispensable parameters of pulley-belt system, a manufactured pulley- belt system has been built and experimental results have been obtained and analyzed accurately which reveal the effects of these parameters on indicated system. Manufactured system assembled from heavy steel structure, variable speed DC motor, speed measurement tool (tachometer), two shafts of 25 mm diameter, four pillow block ball bearings, V-belts and pulleys with different diameters (10, 15, 20, 25) cm. The fabricated system presents mechanical characteristics likes serial changing in rotational speed (500 to 2000) rpm, diameters ratios (1 to 2.5) and center distance (27 to 120) cm. accelerometer ADXL335 (3-axis) mounted on bearing brackets of drive and driven shafts and connected to Arduino type mega 2560 (microcontroller) which sending the data of vibration to the laptop in order to display it in Sigview software as a time and frequency domain band by FFT (fast fourier transform). Results showed the effects of change the values of rotational speed, center distance, and diameters ratios on vibration response of pulley-belt system

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