Mechanical Performance Analysis of Dovetail Joints Under Different Working Conditions,.

In order to explore the influence of different working conditions on the mechanical properties of dovetail joints, in this paper, the "Qing Dynasty Engineering Rules" of the Ministry of Qing Dynasty and "Wood Construction Technology of Ancient Chinese Buildings" were used as the weighing standards, using the results of wood properties tests conducted by other scholars as a reference, the numerical simulation of pseudo-static load was carried out on the dovetail joints of Qing Dynasty based on the finite element software ABAQUS. The influence of different angles outside the plane of tenon, different materials, different axial loads, and different load positions on the mechanical properties of dovetail tenon joints was investigated. The results showed that: 1) The hysteretic curves of dovetail mortise and tenon are all inverted z-shape. 2) The maximum bending moments at dovetail joints were 0.896, 0.914 kN·m and 0.979 kN·m when the lateral angles of the Fangs were 0°, 1.41° and 2.82°, respectively. When the axial load at the top of the column increases from 0 to 50 kN, the two-way maximum bending moments of dovetail joints change from 0.896 kN·m and 0.523 kN·m to 2.680 kN·m and 5.129 kN·m respectively. The two-way yield moment changed from 0.823 kN·m and 0.473 kN·m to 2.366 kN·m and 4.172 kN·m respectively. When the axial load at the top of the column increases from 50 kN to 100 kN, the changes of the two-way maximum bending moment and yield bending moment do not exceed 1%. 3) The peak viscous damping coefficients of dovetail joints corresponding to horizontal displacements of 0, 25 mm, and 50 mm applied on the beam side are 22.05%, 28.50%, and 29.38%, respectively. [ABSTRACT FROM AUTHOR]