Vol. 135 (2019) ACTA PHYSICA POLONICA A No. 5 Special Issue of the 8th International Advances in Applied Physics and Materials Science Congress (APMAS 2018) A Single Lap AlCu 4 Mg Riveted Joint Plate Material Structural Analysis for Bending-Shearing-Squeezing Forces under Airﬂow and External Loads in Computational Engineering Design Ö. Karaçalı * İstanbul University Cerrahpaşa, Department of Mechanical Engineering, Avcılar, İstanbul, 34320 Turkey A rivet is a cylindrical rod (shank) with a tapered tail and a head. Rivets are used in many design applications such as joining together two or more plates. The full understanding of these joints is essential in many areas, e.g. automobile and aviation industries and marine applications, mainly for leak proof joints like oil tanks, boilers etc. However, the riveted joints studies have been so far poorly comprehended and necessitate more research. The aim of this research is to establish and analyze 3D computational models of single riveted joints based on elastic- plastic properties. The static stress under bending/shearing and squeezing forces of rivet material with PA25 alloy (AlCu4Mg) according to EN 1301-2:1997 ductile fracture conditions were analyzed for residual tensional load and airﬂow in the riveted connection by the ﬁnite element method. This paper proposes a hybrid simulated analysis of bending/shearing and squeezing forces combined simultaneously for riveting process. In addition to this, the external loading and airﬂow simulations were also carried out to ﬁnd residual stress solutions. The eﬀects of riveting operation parameters i.e. material type, head die design, impact force, and geometric parameters under BSSF of plates for rivets were investigated under airﬂow conditions. The ANSYS explicit ﬁnite element analysis of riveting process was realistic approach to simulate hundreds of rivets before the riveted joint system realization to prevent service and work safety hazardous. DOI: 10.12693/APhysPolA.135.925 PACS/topics: rivet, titanium material, stress, von Mises, FEA 1. Introduction Riveting is a type of connection that depends on the material and shape parameters. The quality of rivet joint is changed by geometrical and manufacturing process pa- rameters i.e. rivets diameter-pitch, rivets squeeze force and plate thickness [1–3]. The researches in literature about rivet are mainly focused on the rivet fatigue per- formance and crack issues [5] and the residual stresses about the riveted joint [4]. The squeezing forces that were proved to be experimentally and numerically have the most signiﬁcant role in riveting process [6]. To in- crease fatigue resistance of riveted joints and to model large aircraft assembly ﬁnite element (FE) was applied for assembly variation analysis [7]. Regarding the re- search presented in this article, hybrid riveting analysis for a new FE method was proposed considering bending and shearing forces while squeeze force applied to shank head and plate to increase the strength of the structured monolithic body. The next section explains this new con- cept as numerical and simulation method for riveting re- lated to bending/shearing and squeezing forces (BSSF) under airﬂow loading conditions on single riveting model as shown in Fig. 1. * e-mail: ozdogank@istanbul.edu.tr 2. Material and methods: experimental procedure The main goal of this research was the analysis of the material deformation behavior of the composite joint con- tained of two plates and rivets under airﬂow. The AN- SYS program for simulation was employed to compute the strengths occurred during airﬂow in a rivet speci- men. This static loaded rivet was applied airﬂow with velocity of 300 m/s is given in Fig. 2. Simulation The FE numerical investigation consists of 3D modeling of the composite plates, the rivets under the eﬀect of air- ﬂow. The experiments carried out for single lap rivet Fig. 1. Single lab rivet model. (925)