Design and analysis of office seat armchair according to additive manufacturing method


Thesis Type: Postgraduate

Institution Of The Thesis: Bursa Uludağ University, Fen Bilimleri Enstitüsü, Turkey

Approval Date: 2020

Thesis Language: Turkish

Student: Süleyman Kuş

Supervisor: ALİ DURMUŞ

Abstract:

In this thesis, an office chair armrest produced with Fused Deposition Modeling, which is one of the additive manufacturing methods, in a way to meet the requirements of TS EN 1335 standard; design, analysis, optimization and testing were carried out. The design of the armrest model was made according to the standard requirements, and two different optimization studies were carried out for the inner volume of the armrest model, with a 50% occupancy rate. These optimization studies; optimization study of suitable outer section thickness and inner cellular size change in which the inner armrest filling shows the homogeneous distribution, and optimization studies where the regions with high stress on the armrest are defined as full and other regions as homogeneous low density. In the homogeneous density optimization study, it was observed that small improvements could be made in the armrest model according to the finite element analysis results; however, with the determined filling ratio, an appropriate result that does not exceed safe limit stress values could not be obtained. In the regional density optimization study, generally lower stress values were obtained than the homogeneous density optimization study according to the finite element analysis results. The model obtained gave a relevant result according to the determined safe stress criteria. The production of this armrest model for which the relevant result is obtained has been realized, then it is subjected to validation tests. As a result of the validation tests, the model fulfilled the requirements.