CAJ | 학술논문

将管道理论引入叠层板状结构的流致振动研究，在势流理论下，基于输流管道的哈密顿原理，建立悬臂支承叠层板状结构的流致振动模型，用微分求积法对模型的运动方程进行离散，运用特征值分析与响应分析结合的方法，确定系统失稳的临界流速与形式，并研究不同参数对稳定性的影响。结果表明，悬臂叠层板发生颤振失稳，间隙，管／液质量比，间隙和流速非对称参数对颤振流速有一定的影响，但在该研究参数范围内对系统失稳形式没有影响。
장관도이론인입첩층판상결구적류치진동연구，재세류이론하，기우수류관도적합밀돈원리，건립현비지승첩층판상결구적류치진동모형，용미분구적법대모형적운동방정진행리산，운용특정치분석여향응분석결합적방법，학정계통실은적림계류속여형식，병연구불동삼수대은정성적영향。결과표명，현비첩층판발생전진실은，간극，관／액질량비，간극화류속비대칭삼수대전진류속유일정적영향，단재해연구삼수범위내대계통실은형식몰유영향。
The pipe theory was introduced into the flow-induced vibration study of a laminated plate-type structure. The mechanical model was set to describe the plate-type structure in potential flow.The dynamic equation was deduced based on Hamilton principle.The differential quadrature method was used to solve the differential equations.And the effects of various parameters on the instability of the system were investigated.The results showed that the cantilevered model has the flutter over the critical flow velocity;parameters of gap,mass ratio,gap asymmetrical parameter and velocity asymmetrical parameter have influences on the flutter velocity,but they have no effect on the system's instability forms in the ranges of parameters considered here.