Document Type : Research Paper

Authors

• Soheila Zamaninasab ¹
• amir lashgari ²
• azhang tajdini ³

¹ Master of Industrial Engineering Wood and Paper, College of Agriculture and Natural Resources, Islamic Azad University, karaj, Iran

² Associate Professor, Department of Wood and Paper Industries, College of Agriculture and Natural Resources, Islamic Azad University, karaj, Iran

³ Associate Professor, Department of Wood and Paper Industries, The Head of a faculty of Agriculture and Natural Resources, Islamic Azad University, karaj. Iran

Abstract

In this research, resistance and stress concentration on the seat structure were examined by changing the type of connection (tongue and groove connection , and double connection). platanus orientalis used to make wooden chairs. Moreover, we applied Ansys to calculate resistance and mechanical testing machine with a load of chairs 7/12 mm per minute to show the stress distribution on the chairs members . The results show that chairs by tongue and groove connection and having a simple structure and with bail , have more resistance and less stress distribution than a double chair with a simple structure and with indicating connection and the impact of the type of connection were significant on the chair resistance . The stress distribution shows that the maximum stress concentrations on the horizontal joints are visible . Finite element models show that the stress distribution is more uniform in chairs with tongue and groove connections.

Keywords

• dowel joint
• Ansys software
• Finite element method
• stress distribution

Main Subjects

• Mechanical conversion of wood and wooden fittings