双壳驳模型的结构设计及约束扭转试验研究

本文从双壳驳模型结构设计、扭转试验技术两方面作了系统介绍。 在指导畸变模型设计的理论上,提出了两个独立的几何参数L、t的概念,基本解决了这类模型所必然存在的构件厚度与其它几何尺度不能取同一相似倍数的问题,从而使模型试验结果对实船进行相关预报成为可能。 在约束扭转试验技术方面,设计中采用了双滑轮悬吊支承,油顶-滑轮自平闭式加载系统,百分表随动臂架变形测量装置等,形成一套新的弯、扭组合测试技术,与国外类似试验相比,模型的边界条件更为合理。 本文结论对于箱形结构模型是适用的;所介绍的试验技术对于集装箱船、双体船、工程船和海洋平台等大比例尺模型试验具有一定的参考价值。

STRUCTURAL DESIGN OF DOUBLE SKIN BARGE MODELS AND THEIR WARPING TORSION EXPERIMENT

Structural design of double skin barge models and techniques for torsion experiment of these models are described.Two independent geometrical dimensions L, t are proposed for distorted model design theory, so that the thickness scale can be different from the length scale. Calculated results agree well with experimental results. This shows that distorted model test results can be used to predict its prototype.For torsional experiment, a model supporting system in the form of double pulley suspension, a closed selfequilibratory loading system and a dial indicator system attached to a beam, which was supported on the model, constitute a new set of test techniques for bending and torsion. The boundary conditions for model test are more rational in comparison with similar tests in other countries.The conclusions presented also apply to box type structures and the experimental techniques are applicable to large scale model tests of container ship, catamaran, engineering ship and ocean platform.