Onder Ayer

Trakya University · Department of Mechanical Engineering

AZ31 magnesium alloy is mainly used in aerospace applications due to its lightweight and good mechanical properties. The installation of AZ31 alloy in an aircraft usually requires machining operations such as drilling and milling for assembly purposes. The current study aims to investigate the effects of different extrusion ratios (1.77, 2.68, 3.55...

Cite this article as: Ayer, Ö., Karakaya, İ. (2021). FEM simulation study for a weld seam defect of an extruded profile, Trakya University Journal of Engineering Sciences. Highlights ➢ Finite element methods (FEM) give satisfactory and reliable results for complicated engineering problems. ➢ Extrusion defects could be predicted by using FEM-based s...

Production can be briefly defined as creating something new as a result of effort. There are many different production methods. With the industrial revolutions, the number of these methods has increased, and these methods have developed. Over time, heavy and laborious work that people had to do began to be done by machines. The casting method, whic...

The study was carried out to evaluate the effect of extrusion ratio and extrusion die angle on the mechanical properties and microstructure of AZ31 magnesium alloy at 300 °C extrusion temperature with three different extrusion ratio of 1.77, 2.68, 3.55 and die angles of 10⁰, 15⁰, 20⁰. It was identified that microstructure was significantly refined...

In this study, an extrusion simulation of a porthole dies for standard box profile was investigated with the support of HyperXtrude Inspire Extrude Metal 2019 software, which is specialized for FEM calculations of the extrusion process. Aluminum AA6063 material was used for simulations, the process temperature was 450°C and punch velocity was selec...

The aluminum alloys are ideal material because of their corrosion resistance, recycling ability, high specific strength and especially low density for lightweight structures of transportation, aerospace, automotive industries. Hot extrusion process is the most used metal forming method for obtaining a variety of aluminum alloy profiles. The demand...

The effect of extrusion parameters on the extrusion load for AZ31 magnesium alloy was investigated with the support of numerical methods. With this regard, the process temperature, extrusion ratio, friction factor and punch velocity were selected as main parameters for the experiments. Besides, the experimental results were analyzed by using the fi...

A gear with sinus curved profile was presented in this paper. The tooth profile was designed according to sinus function for 2π and 4π period. The trace of the gear was chosen as involute profile. Proposed gear types was built and simulated in CATIA software and the results compared with spur gear form simulation results. The stress distribution wa...

Simulation of helical gear forming is investigated in this study. AZ31 type magnesium material was selected for workpiece material because of its high specific strength. The finite element method was used to simulate the closed die upsetting method for magnesium material of helical gear upsetting. Three dimensional finite element analyses are carri...

The expected life of a gear is important parameter especially for the gears to secure of the mechanics of it. Related to this importance, fatigue failure is one of the most seen failures occurred on gears working under cyclic loads. It is not possible to eliminate fatigue failure effects but it is possible to reduce by appropriate materials selecti...

The main purpose of this research is to investigate the minimum deformation load by selecting a suitable forming method for manufacturing of gear-like sections and to compare the load estimation methods between Upper Bound Analysis and DEFORM-3D. Forward and lateral extrusion were chosen as two different forming methods. The effect of die transitio...

This paper deals with the extrusion of gear-like profiles and uses of finite element method (FEM) and artificial neural network (ANN) to predict the extrusion load. In the study, gear-like components has been manufactured by forward extrusion for the AA1070 aluminum alloy and the process was simulated by using a DEFORM-3D software package to establ...

Lateral extrusion, sometimes called injection upsetting, offers a product with central boss section having complete or segmented protrusions. Collar flanges, spur gear forms, spline or taper with shaft are examples of the products of produce by lateral extrusion. The aim of this study is to investigate the lateral extrusion of gear-like spline form...

Lateral extrusion, which requires less forming load comparing the closed-die forging, has been presenting a gradually increasing field of application as a type of metal forming wherein advantageous of forging and extrusion are combined. In this study production of a work piece with a single tapered tooth manufactured by the lateral extrusion method...

The aim of this research is the reduction in deformation load, improvement of the mechanical properties of the product by means of an optimum forming process and die profile. Forward extrusion and lateral extrusion were chosen as two different forming methods to manufacture a spur gear form.Four different die geometries were chosen for the forward...

Extrusion method is an important bulk-forming process to transform materials into semi-finished products in the form of bar, strip, and solid section as well as tubes and hollow sections. One of the basic considerations of die design is to determine the number of die openings based on the shape and size of the profile. In this study, variation of t...

The effect of die inlet and transition geometry on the extrusion loads and material flow for extrusion of clover sections were investigated and presented both theoretically and experimentally. For this purpose, four different die geometries including straight tapered and cosine transition profile and each of them having round and clover inlet geome...

Forward extrusion of clover section from different billet diameters has been investigated. The die profile is given by radius function to construct the new kinematically admissible velocity fields for three dimensional extrusion and then by using the upper bound method total extrusion loads are obtained. In the experimental studies, lead billets wh...

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