摘要
本文运用弹性杆理论建立了铺设过程中海底管道的综合相容的力学模型。该模型考虑了由于管道的大挠度变形引起的几何非线性和由于流体动载荷引的的载荷非线性的影响,考虑了随管道变形而变化的边界条件。介绍了差分法在求解该非线性模型中的应用,并对如何模拟边界条件提出了一整套方法。本数值方法的结果与已有的直接积分法计算结果比较,二者吻合较好。
In this paper, the elastic rod theory is applied to establish a comprehensive and consistent mechanical model for a: marine pipeline during installation in ocean. The model takes into account the effects of geometrical nonliaearity caused by-large deflection deformation of the pipeline and load nonlinearity caused by hydro-dynamic loads. The boundary conditions are deformation dependent.This paper presents the application of difference methods in solving the nonlinear model and a set of approaches to simulating the boundary conditions. The results simulated by the proposed numerical method have been compared with the re-suits by direct integration method. The comparison shows that the accuracy of the proposed numerical method is the same as that of the direct integration method.
出处
《海洋工程》
CSCD
北大核心
1993年第3期28-38,共11页
The Ocean Engineering
基金
国家自然科学基金的资助
