Numerical and Mechanical Research on Withdrawal Capacity of Parallel-to-grain Connection Part of Mortise and Loose Tenon Joint for Wooden Furniture

Abstract

The mortise and loose tenon (M&LT) joint is a form between mortise-and-tenon (M&T) joint and dowel. It combines the advantages of easy processing and high bonding strength and has no requirement for the shape of the tenon shoulder. However, there is a lack of research conducted separately on the parallel-to-grain part of M&LT joint. This study explored the withdrawal capacity of the equivalence I-type specimen to focus on the strength of the parallel-to-grain part of M&LT joint by conducting mechanical experiments and establishing finite element model. The results indicated that (1) The largest average pull-out load occurred at the group of 0.1 mm interference fit with the value of 16000 N, most of the joints underwent shear damage of material parallel-to-grain; (2) The maximum load of FEM is 14300 N with an error of 10.5%, so finite element model is a rational approach to predict the withdrawal strength of parallel-to-grain connection of M&LT joint.