Table 10 Accuracy of multivariate rational RS model for the monolithic tower problem
From: Multivariate Rational Response Surface Approximation of Nodal Displacements of Truss Structures
Evaluation standards | Condition 1 | Condition 2 | ||
|---|---|---|---|---|
Node A | Node B | Node A | Node B | |
Multiple fitting coefficient \(R^{2}\) | 1 | 1 | 1 | 1 |
Modified multiple fitting coefficient \(R_{\text{adj}}^{2}\) | 1 | 1 | 1 | 1 |
Maximum relative error ζmax/% | 3.67 × 10−4 | 3.63 × 10−2 | 4.83 × 10−3 | 7.08 × 10−3 |
Minimum relative error ζmin/% | 2.10 × 10−3 | 7.30 × 10−8 | 7.65 × 10−8 | 2.76 × 10−8 |
Average relative error ζavg/% | 5.58 × 10−4 | 2.45 × 10−3 | 6.72 × 10−4 | 5.18 × 10−4 |