On the limit analysis of defective pipelines under complex loadings

• Autorzy: Liu Y. , Xu B. , Yang B.
• Języki publikacji: EN

Abstrakty

EN

The paper deals with the nonlinear theory of thin shell structures in the presence of irregularities in geometry, deformation, material properties and loading. The irregular shell is modelled by a reference network being a union of piecewise smooth surfaces and space curves, with various fields satisfying relaxed smoothness, differentiability, and regularity requirements. Transforming the virtual work principle postulated for the entire reference network, the corresponding local field equations and side conditions (boundary and jump conditions) are derived. It is shown that no more than four static and work-conjugate kinematic jump conditions can correctly be formulated whenever the shell deformation is assumed to be entirely determined by deformation of the reference network capable of resisting to stretching and bending. Some typical failure modes corresponding to different configurations of slots and loading forms are studied.

Słowa kluczowe

EN

integrity assessment; limit analysis; loading path; mathematical programming; part-through slot; pipeline

PL

obciążenia graniczne; rurociągi

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2000
• Tom: Vol. 52, nr 4-5
• Strony: 629--644
• Opis fizyczny: Bibliogr. 11 poz. ,

Twórcy

autor

Liu Y.

autor

Xu B.

autor

Yang B.