Table 1 Approves the convergence of the numerical result of \(u(t)\) and the comparable NPA result \(g(t)\).
From: Effects of strong parametric excitation on cantilever beam: non-perturbative approach
t | Numerical | Equivalent | Absolute error | Relative error |
|---|---|---|---|---|
0 | 0.3 | 0.3 | 0. | 0. |
5 | 0.0385536 | 0.0492748 | 0.0107213 | 0.278087 |
10 | − 0.225546 | − 0.283813 | 0.0582674 | 0.258339 |
15 | − 0.0927127 | − 0.142507 | 0.0497945 | 0.537084 |
20 | 0.15196 | 0.237 | 0.0850396 | 0.559618 |
25 | 0.115195 | 0.220361 | 0.105166 | 0.912936 |
30 | − 0.0879005 | − 0.164611 | 0.9767109 | 0.872702 |
