Open AccessSimulation Experiment Analysis and Verification of Ship Resonance for Shipboard Helicopter
Author(s) -
Yan Fei Zhu,
Yuhui Lu,
Fengnan Sun,
Qiyou Cheng,
Siwen Wang,
Zhenkun Li
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2029/1/012015
Subject(s) - fuselage , rotor (electric) , aerodynamics , damper , flapping , time domain , engineering , transient (computer programming) , aerodynamic force , structural engineering , marine engineering , simulation , control theory (sociology) , computer science , aerospace engineering , mechanical engineering , control (management) , artificial intelligence , wing , computer vision , operating system
According to the dynamic characteristics of shipboard helicopter landing, the time-domain load of ship movement on the fuselage under complex sea conditions, the nonlinear dynamic characteristics of rotor damper, and the influence of rotor blade flapping movement and aerodynamic force are considered. The fuselage, rotor lagging damper, blade flapping and lagging movement and aerodynamic model are modeled separately as sub-models, and then the subsystems are integrated according to mechanical principles to finally establish the ship resonance analysis model of helicopter. The method for simulation experiment of ship resonance is put forward. The whole process of ship resonance experiment is dynamically demonstrated by digital simulation technology, which simulates the excitation load on the fuselage caused by the rise and fall and rolling movement of the ship. Actually simulates the lifting collective pitch and conducts periodic excitation by disturbing the control stick. Based on the transient response of the time-domain simulation dynamic system under disturbance, the stability of ship resonance is analyzed. The accuracy of the simulation method is verified through project cases, and the simulation experiment analysis techniques for accurately predicting the unstable boundary of ship resonance are mastered, which provides design and analysis means instead of the experiment that cannot be carried out in model development.