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Numerical experiments on determination of maximal stresses of non-reinforcement cut drums of mine winders

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Category: Mining mechanics

Last Updated on Thursday, 17 October 2013 16:16

Published on Thursday, 08 November 2012 14:35

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Authors:

Ye.N. Sosnina, State Higher Educational Institution „National mining university“, Postgraduate Student, Dnipropetrovsk, Ukraine

Abstract:

Purpose. To solve the technical problem of increase of the mine winder drum strength providing its minimal mass it is necessary to determine the influence of geometrical parameters on the stress-strain state of non-reinforced cut drum by means of the numerical experiment method.

Methodology. The literary sources have been analyzed, and previous researches have been summarized while substantiating the choice of parameters for investigation. Methods of mathematical and computer modeling, including finite-element models, and methods of planning of two-factor experiment and theoretical analysis were used for determination of the influence of the parameters on the stress-strain state of the drum loaded by the pressure of wound rope.

Findings. The important factors for numerical experiment have been determined. Dependence of the maximum stress intensity on forehead location and its thickness in the jammed part and on forehead location in adjustable part has been set as a result of numerical experiment. Relevant recommendations on the thickness and location of foreheads have been suggested.

Originality. It is established that the maximum stresses may occur in compressed or bended areas of the shell for different forehead locations. Thus, while the forehead is close to cut plane the maximal stresses of the largest annular compression are dominating, and while the forehead is distant from cut plane the maximal bending stresses are dominating. While the distance between forehead and cut plane equals to three grooves the stresses of two types are even to each other and load is minimal. In this case, if the forehead thickness is 20 mm and more its increase doesn’t influence the drum stress, but there is a sharp increase in stresses with decrease of thickness below 20 mm.

Practical value. Recommendations concerning implementation of rational construction of non-reinforced cut drums of mine winders.

References:

1. Заболотний К.С. Дослідження впливу підкріплень на напружено-деформований стан розрізних барабанів шахтових підйомників [Текст] / К.С. Заболотний, О.Л. Жупієв, Є.М. Сосніна // Вестник Харьковского национального автомобильно-дорожного университета: сб. науч. Трудов – Харьков: ХНАДУ, 2012. – Вып. 56. – С. 85–91.

Zaboblotny, K.S., Zhupiyev, A.L. and Sosnina, Ye.N. (2012), “Research of influence of reinforcements on mine winders cut drums stressed state”, Bulletin of Kharkov National Automobile and Highway University: Collection of Scientific Works, Kharkov, Ukraine, Issue 56, pp. 85–91.

2. Заболотный К.С. Обоснование компьютерной модели барабана и расчетных нагрузок шахтной подъемной машины [Текст] / К.С. Заболотный, А.Л. Жупиев, Е.Н. Соснина // Геотехническая механика: Межведомственный сб. науч. трудов – Днепропетровск: Ин-т геотехнической механики им. Н.С. Полякова НАН Украины, 2011. – Вып. 92. – С. 275–278.

Zaboblotny, K.S., Zhupiyev, A.L. and Sosnina, Ye.N. (2011), “Substantiation of computer model of drum and calculated loads of mine winder”, Geotekhnicheskaya mekhanika: Interdepartmental Collection of Scientific Works, Dnepropetrovsk, Ukraine, Issue 92, pp. 275–278.

3. Проектирование подъемных барабанов в SolidWorks Simulation [Текст] / [К.С. Заболотный, А.Л. Жупиев, Е.В. Панченко и др.] // КПД. Компьютерное проектирование и технический документооборот. – К., 2010. – Вып. 1 (14). – С. 16–21.

Zaboblotny, K.S., Zhupiyev, A.L. and Panchenko Ye.V. (2010), “Design of hoisting drums in SolidWorks Simulation”, KPD, Kiev, Ukraine, Issue 1(14), pp. 16–21.

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