Figure 18
The graph displays two datasets over time for three nodes, labeled A (black), B (blue), and C (red). The horizontal axis represents time (t) per (1 times 10 to the 3 power seconds), with values ranging from 0 to 10, divided into increments of 1 unit. The vertical axis on the left shows displacement (u) in millimeters, ranging from 0 to 20 millimeters with an interval of 5 units, while the vertical axis on the right shows relative strain (epsilon subscript rel) in percentage, ranging from negative 7.5 to 2.5 with an interval of 2.5 units. The solid lines represent displacement (u in millimeters), and the dotted lines represent strain (epsilon subscript rel in percentage). The black solid curve starts from (0, 0), rises linearly towards the right, passes through (1.277, 4.634) and (2.527, 4.634), decreases to (3, 2.195), and again increases through (4.429, 3.252) and (8, 0.569), and ends at (10, 3.659). The blue solid curve starts from (0, 0), rises linearly towards the right, passes through (1.264, 17.886) and (2.527, 17.805), decreases to (3, 9.024), and again increases through (4.647, 13.252) and (8, 1.789) and ends at (10, 14.146). The red solid curve starts from (0, 0), rises linearly towards the right, passes through (1.264, 6.098) and (2.527, 6.098), decreases to (3, 3.089), and again increases through (4.484, 4.472) and (8, 0.732), and ends at (10, 4.959). The dashed gray line follows the same path as each solid curve. The black dotted curve starts from (0, 0), moves towards the right with fluctuation forming multiple peaks and troughs, passes through (0.231, 1.768), (2.745, negative 2.988), (3.071, 0.467), (8.057, 2.744), (9.076, negative 3.11), and ends at (10, negative 1.524). The blue dotted curve starts from (0, 2.297), moves towards the right with fluctuation forming multiple peaks and troughs, passes through (0.163, negative 2.663), (0.951, negative 1.89), (2.663, negative 1.687), (7.011, negative 1.687), (8.433, negative 2.663), and ends at (10, negative 1.687). The red dotted curve starts from (0, 0), increases towards the right with fluctuation forming multiple peaks and troughs, passes through (0.109, negative 0.183), (2.459, negative 1.199), (2.935, negative 0.711), (7.079, negative 1.24), (7.948, 0.061), and ends at (10, negative 1.362). Note: All numerical data values are approximated.Displacements of the evaluation nodes from Figure 17 over time (solid lines). Dotted lines describe the relative error, dashed lines near the solid lines arise from the full solution. The exciting forces basically follow the oscillating nature of the displacement curves. Source: Authors’ own work