WOOD RESEARCH Volume 68, Number 1, 2023
Xudong Zhu, Yingying Xue, Xuewen Zhang, Pengfei Qi, Qian Lan, Jie Shen, Liang Qian, and Shengcai Li

Bearing failure mode and stiffness analysis of L-shaped parts connected by beech and self-tapping screw composite dowels

This study examined the performance of beech and self-tapping screw composite dowel applied to non-extruded L-shaped member joints and carries out theoretical calculation and analysis of stiffness. The test results indicated that eleven specimens showed three failure modes. It was found that the composite dowel had different degrees of bending phenomenon. The failure modes were also proved by the finite element analysis. Since the spruce-pine-fir was in the middle of the L-shaped specimen set in this test, it can rotate around the geometric center composed of four composite dowels.

WOOD RESEARCH Volume 66, Number 6, 2021
Xudong Zhu, Yingying Xue, Xuewen Zhang, Pengfei Qi, Jie Shen, and Changtong Mei

Research on shear performance of components connected by beech and self-tapping screw composite dowels

This study examined the properties of components connected by beech and self-tapping screw composite dowels (group C). As a contrast, the components connected by beech dowels and self-tapping screws individually were tested. The test results indicated that the properties of the components connected by beech dowels (group B) were better than those connected by self-tapping screws (group S), except the ductility coefficient, final displacement, and energy consumption. On the other hand, the main failure modes of groups B and S were the broken beech dowel and the bent self-tapping screw, respectively. For group C, two peak values could be found which were larger than the maximum load of groups B and S, respectively. The properties of group C were better than those of groups B and S, except that the final displacement and energy consumption were located between those of groups B and S. Meanwhile, the linear equation in two unknowns have be found between groups B, S and C.