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Formulation of Rotor-Airframe Coupling for Design Analysis of Vibrations of Helicopter Airframes

机译：用于直升机机体振动设计分析的转子 - 机架耦合配方

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A linear formulation of rotor airframe coupling intended for vibration analysis in airframe structural design is presented. The airframe is represented by a finite element analysis model; the rotor is represented by a general set of linear differential equations with periodic coefficients; and the connections between the rotor and airframe are specified through general linear equations of constraint. Coupling equations are applied to the rotor and airframe equations to produce one set of linear differential equations governing vibrations of the combined rotor airframe system. These equations are solved by the harmonic balance method for the system steady state vibrations. A feature of the solution process is the representation of the airframe in terms of forced responses calculated at the rotor harmonics of interest. A method based on matrix partitioning is worked out for quick recalculations of vibrations in design studies when only relatively few airframe members are varied. All relations are presented in forms suitable for direct computer implementation.

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Kvaternik, R. G.; Walton, W. C.;
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年度 1982
页码 p.1-135
总页数 135
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Airframes; Coupling; Engine airframe integration; Rotorcraft aircraft; Vibration; Finite element method; Harmonic motion; Helicopter design; Mathematical models; Mechanical drives; Numerical analysis;

机译：机身;联轴器;发动机机身集成;旋翼机;振动;有限元法;谐波运动;直升机设计;数学模型;机械传动;数值分析;

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8. A formulation of rotor-airframe coupling for design analysis of vibrations of helicopter airframes [R] . Kvaternik, R. G., Walton, W. C., Jr. 1982

机译：用于直升机机体振动设计分析的转子 - 机体联轴器的配方

Formulation of Rotor-Airframe Coupling for Design Analysis of Vibrations of Helicopter Airframes

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