Maximum d/t (standard size ratio) | Average wall thickness (mm) | Average outside diameter (mm) | Ovality (%) | Wall thickness nonuniformity (%) | Residual stress (mpa) | Yield minimum value (mpa) | Section number |
Intact tubing (according to the collapse morphology in the middle of the tubing to collapse the choice of section 5 geometry size) | |||||||
13.49 | 6.59 | 88.93 | 0.38 | 5.16 | −140.5 | 720 | 5 |
Plastic collapse compressive strength (mpa) | Kt ultimate collapse strength (mpa) | ||||||
93.1 | 97.7 | ||||||
Extrusion strength of collapsing tubing (evaluation) | |||||||
12.5 | 7.14 | 89.32 | 0.45 | 9.1 | −140.5 | 705 | / |
Plastic collapse compressive strength (mpa) | Ktultimate collapse strength (mpa) | ||||||
103.5 | 104.76 |