Kinetic analysis of elastomeric lag damper for helicopter rotors

2017 International Conference on Sensors, Materials and Manufacturing

工业技术;材料科学;机械制造

Liu, Yafang^1 ; Wang, Jidong^1 ; Tong, Yan^1

Beihang University, Xueyuan Road No.37, Beijing

100191, China^1

关键词: Different frequency;    Elastomeric lag damper;    Ground resonance;    Kinetic analysis;    Linear modeling;    Operating frequency;    Small-amplitude oscillations;    Stress-strain hysteresis loops;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/311/1/012006/pdf
DOI  :  10.1088/1757-899X/311/1/012006

来源: IOP

【 摘 要 】

The elastomeric lag dampers suppress the ground resonance and air resonance that play a significant role in the stability of the helicopter. In this paper, elastomeric lag damper which is made from silicone rubber is built. And a series of experiments are conducted on this elastomeric lag damper. The stress-strain curves of elastomeric lag dampers employed shear forces at different frequency are obtained. And a finite element model is established based on Burgers model. The result of simulation and tests shows that the simple, linear model will yield good predictions of damper energy dissipation and it is adequate for predicting the stress-strain hysteresis loop within the operating frequency and a small-Amplitude oscillation.