en گروه مکانیکی و شکل دادن Mechanical Performance and Formability of Materials Research Paper Research Paper <p dir="ltr" style="text-align: justify"><font color="#000000"><span lang="EN-GB" new="" style="font-family: " times="">The purpose of this research is to achieve the optimal parameters for producing forged aluminium alloy 7075 aircraft door </span><span new="" style="font-family: " times="">bracket</span><span new="" style="font-family: " times=""> <span lang="EN-GB">by using finite element modelling (FEM) with commercial DEFORM-3D V6.1 and physical simulations with plasticine and Plexiglas dies. Also, forging speed has been examined as the main factor for controlling to produce a part without any defects</span><span dir="RTL" lang="AR-SA">.</span><span lang="AR-SA"> </span><span lang="EN-GB">The results of Physical Simulation showed that the flow pattern has good agreement with the results of FEM that based on the use of hydraulic presses with initial billet and dies temperatures 410 and 400 ° C, respectively, and different forging speeds 5, 10 and 15 mm/sec. Distribution of effective strain rate, effective strain, effective stress, temperature , forging force and dies­ wear showed improvement the results in forging speed of 5 mm/sec. Processing map of Aluminium alloy 7075 also checked out at constant strain 0.5, indicated that the specified area of the forged part is located in a safe area. Forging force in optimized forging speed 5 mm/sec showed that the forging process using a 1000-ton press can be done easily</span></span></font></p> FEM, 7075 Alloy, Physical Simulation, forging speed 51 61 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1010-1&slc_lang=en&sid=1 E. Barati Barati5@yahoo.com 180031947532846003523 180031947532846003523 Yes Department of Material Engineering, Malek Ashtar University, Shahin Shahr, P.O. Box: 115/83145, Iran Kh. Farmanesh 180031947532846003524 180031947532846003524 No Department of Material Engineering, Malek Ashtar University, Shahin Shahr, P.O. Box: 115/83145, Iran