Table 3 Comparison of model with experiments
From: Prediction of buckling force in hourglass-shaped specimens
Smaller diameter, d [mm] | Radius of curvature R [mm] | Ratio R/d | Critical force, Pcr [kN] | Deviation between experiments and Finite element model (Abaqus) model | ||
|---|---|---|---|---|---|---|
Test 1 | Test 2 | Finite element model (Abaqus) | ||||
5 | 20 | 4 | 18.42 | 17.09 | 15.81 | − 11.0% |
5 | 30 | 6 | 14.41 | 14.03 | 13.74 | − 3.4% |
5 | 40 | 8 | 12.61 | 12.94 | 11.83 | − 7.4% |
7 | 28 | 4 | 31.97 | 31.30 | 30.60 | − 3.3% |
7 | 42 | 6 | 26.46 | 26.70 | 26.52 | − 0.2% |
7 | 56 | 8 | 21.70 | 22.64 | 22.31 | 0.6% |