Numerical/Experimental Analysis of the Deformation of Tubes under Concentrated Load

Journal of Modern Processes in Manufacturing and Production

مقاله 2، دوره 6، شماره 3، آبان 2017، صفحه 35-46   

نویسندگان

Javad Jafari Fesharaki^{* 1، 2}؛ Omid Rejali^{1، 2}؛ Seyed Ghasem Madani^{1، 2}

¹Department of Mechanical Engineering, Najafabad Branch, Islamic azad University, Najafabad, Iran

²Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University, Najafabad Iran

چکیده

Distortion and deformation of tubes during machining operations are very important. In this study, a tube used in magnetic drum separator under concentrated load (machining load) is considered. Using finite element simulation, deformities and their dependence on parameters such as the thickness of the tube and the place of concentrated force are observed and predicted. To compare and confirm the results, some experimental tests are considered. The results show that there is good agreement between the numerical and experimental data. The results of this study indicate the amount of residual stress in the tube by changing the location of the load, the effect of residual stresses in the tube, indentations at different levels of thickness and location of the load. Results show that the values and location of force affect the stress and residual stress in the thickness of tube. In addition, increasing the thickness of tube decreases the residual stress area in longitudinal and circumferential direction of tube. Also, the maximum residual stress in tube is occurring under the force area and by increasing the thickness of tube, the displacements of area under the force is decreased.

کلیدواژه‌ها

Tube؛ Finite Element؛ Plastic Deformation؛ Residual Stress؛ Machining Force