| 摘要 |
FIELD: measurement equipment.SUBSTANCE: device comprises a tested model of a floating object, a water reservoir bottom simulator, anchor links to connect the model to the simulator of the bottom and equipped with rope dynamometers for measurement of tension forces in them, and a meter of linear and angular displacements of the selected point of the tested model. The model is made as consisting of two parts with different weight, to one of which that has the weight not exceeding 5% of the total mass of the model there are model anchor retention lines fixed, and which is connected to the remaining part of the model via a dynamometer designed to measure force of interaction between these parts. The method includes assembly of the model to the simulator of the water reservoir bottom with the help of the anchor retention system, measurement of linear and angular movements of the selected point of the model, tension in links of the anchor retention system with the help of rope dynamometers and determination of stiffness characteristic of links. Tests are done on a model made of two parts of different weight that are connected via a dynamometer between them, to the smaller part of which the anchor retention lines are fixed. After assembly of the model to the water reservoir bottom simulator they measure angles of anchor lines approach to the body of the tested model with absence of the external load, and in process of the experiment they measure a force, using a dynamometer, which arises between the specified parts of the tested model. In process of further processing of experiment results they determine the total force acting at the model at the side of the anchor retention system, afterwards they determine inertia characteristics of the model by calculations as the difference between appropriate values defined by readings of the dynamometer between parts of the tested model and the values calculated as total response of anchor links.EFFECT: increased accuracy.2 cl, 3 dwg |
