http://iaeme.com/Home/journal/IJMET 2085 editor@iaeme.com International Journal of Mechanical Engineering and Technology (IJMET) Volume 10, Issue 01, January 2019, pp. 2085-2094, Article ID: IJM 10_01_204 ET_ Available online at http://iaeme.com/Home/issue/IJMET?Volume=10&Issue=1 ISSN Print: 0976-6340 and ISSN Online: 0976-6359 © IAEME Publication Indexed Scopus THEORETICAL AND FINITE ELEMENT INVESTIGATION FOR NOSING BRASS TUBES AT ROOM TEMPERATURES Rawaa Hamid Mohammed Al-Kalali, Dr. Omer Muwafaq Mohmmed Ali and Ethar Mohamed Mahdi Mubarak Middle Technical University Institute of Technology Baghdad-Iraq – – ABSTRACT In this paper the equation is derived theoretically connecting between the stress due to forming and nosing ratio. A theoretical study was performed on the conical nosing of the brass tube material at room temperature. The relationship between forming stress, nosing ratio of tube is concluded. ANSYS is used to simulated 5° and 10° semi-die angles in a conical die to observed the stress and strain distributions in the tube. The process has been carried out using brass tube with thickness 2mm under states of cold process of nosing samples with a radius of (20)mm and length (120)mm. A good match is obtained between the theoretical and the ANSYS results. It is noticed that the well die is conical die having 10° semi angle of die. Keywords: Nosing tube, Brass tube, Finite element method, ANSYS, Tube end reduction, nosing ratio. Cite this Article: Rawaa Hamid Mohammed Al-Kalali, Dr. Omer Muwafaq Mohmmed Ali and Ethar Mohamed Mahdi Mubarak, Theoretic and Finite Element al Investigation for Nosing Brass Tubes at Room Temperatures, International Journal of Mechanical Engineering and Technology, 10(1), 2019, pp. 2085-2094. http://iaeme.com/Home/issue/IJMET?Volume=10&Issue=1 1. INTRODUCTION The process of nosing (tube end reduction) is one of the processes of mechanical forming of metals and the diameter of the end of the circular tube is reduced by compressing it into a conical mold or arc of the cavity to take the end of the tube shape of the mold cavity and have a finite end with a diameter less than the original diameter of the specimen. This process is used to form the end of the projectiles and the percentage of nosing is defined as the amount of contraction in the finite end diameter divided by the original diameter of the specimen. The process of nosing as any mechanical forming process can be carried out on cold or warm. It is cold when the pipes are fitted with a good mechanical properties such as high hardness and smooth surface and is carried out warm for the purpose of reducing the load required for the process of nosing, especially when nosing pipes with relatively large diameters. The process