...Kunio Hasegawa; Bohumír Strnadel; Yinsheng Li; Valéry Lacroix Allowable stresses for pipes with circumferential flaws are provided by the ASME Code Section XI. The stresses for the high toughness pipes are determined by fully plastic collapse stresses and safety factors. The plastic collapse...

...Kunio Hasegawa; Yinsheng Li; Bohumír Strnadel; Anees Udyawar Fully plastic collapse stresses for circumferentially part-through cracked pipes subjected to bending stresses are estimated by limit load criteria provided by the ASME Code Section XI. Allowable crack depths were determined by using...

.... Then we compare elastic–plastic behaviors between ellipsoidal and equivalent torispherical heads as well as their failure modes, i.e., buckling and plastic collapse (bursting). It is found that ellipsoidal heads have more buckling resistance than equivalent torispherical heads, indicating that the current...

... the center of flaws 1 and 2. k p is the modification factor under internal pressure conditions described below, σ θ = 4 − 6 τ + 3 τ 2 2 τ ( 2 − τ ) p σ b ∗ ≈ p / 2 is usually negligible. The plastic collapse criterion is given as follows...

...A. Chaaba This paper aims to deal with plastic collapse assessment for thick vessels under internal pressure, thick tubes in plane strain conditions, and thick spheres, taking into consideration various strain hardening effects and large deformation aspect. In the framework of von Mises’ criterion...

... effects and reference stress solutions, a new procedure for multiple volumetric flaws is proposed for assessing the flaws in the p - M (pressure-moment) diagram, which is a simple assessment procedure for vessels with volumetric flaws. fitness for service (FFS) rule plastic collapse volumetric flaws...

...Xian-Kui Zhu; Brian N. Leis This paper investigates plastic collapse failure behavior and analytical assessment methods for unequal wall transition joints in transmission pipelines. The objective is to (i) validate the plastic-collapse-based code requirements that were determined by the early lower...