The first-yield collapse of submarine pipelines with an initial out-of-roundness imperfection under combined bending and external pressure load is formulated by means of the Von. Mises yield criterion. The formula red...The first-yield collapse of submarine pipelines with an initial out-of-roundness imperfection under combined bending and external pressure load is formulated by means of the Von. Mises yield criterion. The formula reduces to Timoshenko and Gere's expression in the case of external pressure load alone. The influence curves of various parameters on the yield strength are presented, the collapse of submarine pipelines in a deep water region is numerically predicted, and the effect of pre-yield nonlinear bending on the yield strength is also examined.展开更多
文摘The first-yield collapse of submarine pipelines with an initial out-of-roundness imperfection under combined bending and external pressure load is formulated by means of the Von. Mises yield criterion. The formula reduces to Timoshenko and Gere's expression in the case of external pressure load alone. The influence curves of various parameters on the yield strength are presented, the collapse of submarine pipelines in a deep water region is numerically predicted, and the effect of pre-yield nonlinear bending on the yield strength is also examined.
