AN EXPERIMENTAL STUDY ON THE STRESS TRANSFER IN MORTISE-TENON JOINTS FOR WOODEN FRAME STRUCTURES

Abstract

In this paper, results of static loading tests on the stress transfer in mortise-tenon joints are shown. With the investigations of the experimental results, we present key requirements of a mechanical model for stress transfer in tenon joints. The model considers the discontinuity as the results of bi-axial stress state and friction by contact between tenon and mortice. Then the model can be evaluated stress transfer in the directions along fiber and perpendicular to fiber. It is necessary to recognize energy absorbing capacity and strength, inelastic mechanical model should simulate the compressive deformation inclined to the grain, the resistance of cotter and splitting. The mechanical model of main frames should be dealt with geometrically and material non-linearity incorporated with restoring force produced by rocking.