Numerical Analysis of Stress Concentration Factors

Muminović, Adis J.; Šarić, Isad; Repci'c, Nedzad

doi:10.1016/j.proeng.2015.01.423

Cited by 27 publications

(13 citation statements)

References 2 publications

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“…The structural analysis is one of the most common areas of research which use finite element method. FEM is type of analysis where analyzed body is divided by a finite number of small volume elements, which are connected by joints [6,7,8,9,11,12].…”

Section: Structural Analysis Of Car Jackmentioning

confidence: 99%

Development of Parametric CAD Model and Structural Analysis of the Car Jack

Pervan

Muminović

Muminovic

et al. 2019

Adv. Sci. Technol. Res. J.

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The purpose of a car jack is lifting the car and maintaining it at a certain height during different repairs. This paper focuses on the design of car jack, which belongs to the basic equipment of cars. Cars jacks are used mainly for changing tires and small repairs of a car. The aim of this paper was to create a parametric CAD model of a car jack and carry out numerical structural analysis of the car jack using the created parametric CAD model. The development of the parametric CAD model and structural analysis was performed using the CATIA V5 system. This paper describes the modern way of creating more complex mechanisms, which support quick modification of its parameters, and thus the entire design. The whole model of the car jack was parametrized. The stresses obtained by finite element method (FEM) analysis were confirmed with the analytical calculation in characteristic parts of the design, with some exceptions. At the end of the paper, an analysis of the obtained results was performed, on the basis of which specified conclusions were made.

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Section: Structural Analysis Of Car Jackmentioning

confidence: 99%

Development of Parametric CAD Model and Structural Analysis of the Car Jack

Pervan

Muminović

Muminovic

et al. 2019

Adv. Sci. Technol. Res. J.

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“…These studies correspond to the constraints g3 and g4 of the first level, by introducing also bending in vertical and horizontal plans, due to radial and tangential forces. On the basis of references [37][38][39][40][41][42][43], we built another FEM model and set up the limit conditions as shown in Fig. 6.The dimensions of the used key are given in Table ˆi y 6 according to the standard ISO R773 [44].…”

Section: Fig 4 the Three Design Parameters Added In Level IImentioning

confidence: 99%

Optimum design of a spur gear using a two level optimization approach

Mahiddini¹,

Chettibi

Benfriha

et al. 2019

mech

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In this paper, we present a two level optimization approach in order to enhance the design process of a one-stage speed reducer. The proposed design methodology is performed using genetic algorithms which are judiciously combined with the use of :i) analytical models (1stlevel) and ii) Finite Element Method (FEM)based models ( 2nd level), to evaluate design candidates. Indeed, the use of CAD-CAE tools to develop higher fidelity FEM models allows to re-evaluate the attained first level designs, while accounting for new design parameters and advanced aspects which have been ignored in the first level. In order to minimize the computational burden, a metamodel based optimization technique is adopted at this second level. To illustrate the efficiency of the proposed approach, a case study of a spur gear based reducer is presented where the design of experiments is built using Hypercube Latin Sampling and surrogate models are constructed using Radial Basic Functions.

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“…According to the experimental results reported in Applied Strength of Materials by Robert Mott [10], it does not matter if the geometry is similar, stress will behave differently on the surface as in the interior of the geometry. By following the principles of the stress concentrators, the different loads are applied on the outer faces of the geometries; the loads applied were configured according to those reported by [9] and presented in Table 1. All the geometries were configured a load of equal magnitude, but in opposite direction to guarantee the static phenomenon.…”

Section: Solver Configurationmentioning

confidence: 99%

“…The ANSYS® general purpose program was used to obtain the concentration factors of both types of t-joints [3]; other authors have used programs of lower cost and of their own development, that at the University of Sarajevo called AlfaK® [9], which is used to analyze stress concentration factors for different shapes. Table 1 shows the geometric configurations carried out for the AlfaK® program; the results obtained were compared to those reported in Table 2.…”

Section: Introductionmentioning

confidence: 99%

Construction Methods Comparison of Stress Concentrators Curves for Different Geometries of Machine Elements

Gomez

Patiño

et al. 2017

TECCIENCIA

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The aim, herein, was to prove that the analysis of the stress concentration phenomenon with simulation methods provides results that fit those obtained experimentally, thus, corroborating that simulation is a powerful tool that minimizes costs and time in the construction of stress concentrator curves. The experimental curves of stress concentration factors available in the scientific literature can be recreated through simulations, achieving results with low errors. Due to this, geometries were selected with different shape ratios for study; these were developed in the DesingModeler® module of the ANSYS Workbench®, then meshed in the Mechanical® module, and three types of load were applied in their borders: axial force, flexing moment, and torsional moment; these were configured in the StaticStructural® module. After obtaining the maximum force and having calculated the nominal force, these were related by calculating the concentration factor to plot it against the geometric parameter modified during the virtual experimentation. In the end, these were compared with the experimental curves consulted. With the results obtained, it was concluded that it is possible to construct curves of stress concentration factor through simulations, with the same reliability as with conventional experimental methods, but at a lower cost. ResumenEl objetivo del presente estudio es comprobar que el análisis del fenómeno de concentración de esfuerzos con métodos de simulación proporciona resultados que se ajustan a los obtenidos vía experimental, corroborando así que la simulación es una herramienta poderosa, que minimiza costos y tiempo en la construcción de curvas de concentradores de esfuerzos. Las curvas de factor de concentración de esfuerzos experimentales disponibles en la literatura científica se pueden recrear por medio de simulaciones, logrando resultados con errores muy bajos. Por este motivo, se seleccionaron geometrías con diferentes relaciones de forma para el estudio, estas se desarrollaron en el módulo DesingModeler® del ANSYS Workbench®, después se realizó su mallado en el módulo Mechanical®, y se aplicaron tres tipos de carga en sus fronteras: fuerza axial, momento flexionante y momento torsionante, estas fueron configuradas en el módulo StaticStructural®. Después de obtener el esfuerzo máximo y haber calculado el esfuerzo nominal, fueron relacionados calculando el factor de concentración, para después graficarlo contra el parámetro geométrico que fue modificado durante la experimentación virtual. Al final, se compararon con las curvas experimentales consultadas. Con los resultados obtenidos se pudo concluir que es posible construir curvas de factor de concentración de esfuerzo por medio de simulaciones, con la misma confianza que se tiene en los métodos experimentales convencionales, pero a un menor costo.

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Numerical Analysis of Stress Concentration Factors

Cited by 27 publications

References 2 publications

Development of Parametric CAD Model and Structural Analysis of the Car Jack

Development of Parametric CAD Model and Structural Analysis of the Car Jack

Optimum design of a spur gear using a two level optimization approach

Construction Methods Comparison of Stress Concentrators Curves for Different Geometries of Machine Elements

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