Research on the Flutter Characteristics of Traction Wire Rope in Full-Scale Wind Turbine Blade Static Loading Test

Abstract

The static loading test is crucial in verifying the reliability of a large wind turbine blade's structure and guiding its design. However, the drastic wire rope flutter amplitude during the test can lead to significant errors in the loading test results. The paper presents a mathematical model of wire rope flutter based on Hamilton's principle. It uses Adams software to establish a simulation model of a 123m blade static loading test system. The paper analyses the influence of wire rope span, dynamic pulley position, and winch speed on the wire rope flutter characteristics. The results show that for a 123m blade, the amplitude of the wire rope vibration can be reduced by reducing the transverse span of the wire rope to 13m, adjusting the position of the movable pulley as close as possible to the blade, and maintaining a smooth winch speed of 2r/min. It provides theoretical support and operational guidance for static load testing of large wind turbine blades.