FEM model of the L-junction mock-up: (a) discretisation of the assembled mock-up. The red circular markers represent the excitation positions F₁ to F₆ for harmonic analyses. (b), (c) Lay-ups of the CLT100 and CLT060 plates. (d) Detailed model of the bracket with a close-up of the fastening points, whereby rigid multi-point constraints are applied at the plate-bracket interface along the screw holes highlighted in red. (e) Schematisation of the nodal coupling stiffness joints (red dots) applied at the plate-plate interface.