Figure 1
The domain, represented by “Omega,” is partitioned into two distinct sections: “Omega subscript P R” on the left and right sides, while “Omega subscript R R” is in the middle. The inner regions of the central Omega subscript R R section are shaded dark gray, with two marked points labeled Gamma subscript I R. The left and right Omega subscript P R sections are shaded light gray, each with two marked points also labeled Omega subscript P R. Three parallel red arrows point towards the right section from the top right and are labeled “f,” representing the applied force. Three parallel red arrows point towards the left section from the left side. The diagram is placed within a three-dimensional coordinate system, with the origin “O” at the center. The “x” axis extends toward the lower right, the “y” axis extends vertically upwards, and the “z” axis extends toward the bottom left.The complete domain Ω can be partitioned into ΩPR and ΩRR by the faces ΓIR. Source: Authors’ own work