The system of fluid-structure interaction is analyzed by the method of dry modes of ship's hull and the velocity potential of fluid motion is solved by the direct boundary integral equations of two-dimensional boundary element method. 流固耦合系统采用干模态分析方法,流体运动速度势采用二维边界元的直接边界积分方程求解。
The rice hull ash is recognized to be an architectural material with energy saving, high efficiency, sustainable developmental use and the potential economic benefits, social and environmetal protection. 认为稻壳灰是一种节能、高效、可持续发展的、有潜在经济效益、社会效益、环保效益的建筑材料。
Using convex hull of a potential function, the global solution including delta shock waves is constructed explicitly, and is then proved to be a measure solution directly. 构造了包含狄拉克激波的整体显示解,并直接证明了所构造的解是一个测度解。
The traditional method with the assumption of the 2-D planar flow, rigid body model without including the effect of elastic deformation of hull and the linear potential flow theory only suitable for low sea state and low forward speed gradually expresses its limitation. 以平面流建立起来的二维方法,并采用不计船体弹性效应的刚体模型与仅适用于低海况、低航速时的假设,逐渐暴露出其局限性。
It is in need of immediate overcome and improve. The paper use research methods of FMEA and SPC, analyzes the various defects in the hull block fabrication procedures and potential reasons to cause these defects, then take special precautions scheme. 论文利用FMEA和SPC的研究方法,首先分析总结了船体分段生产过程中存在的各种缺陷以及造成这些缺陷的潜在原因,并制订出针对性的缺陷预防方案。