CAJ | 학술논문

用回传射线矩阵法分析计及一阶剪切变形效应的层合复合材料梁瞬态动力响应；给出速度瞬态响应的回传射线矩阵法计算公式；计算分析轴向－弯曲－剪切耦合效应对层合梁瞬态动力响应影响。结果表明，回传射线矩阵法可求解计及一阶剪切变形效应时层合梁瞬态动力响应，且与有限元法解一致；横向（轴向）加载可引起明显的轴向（横向）响应，随铺层角增大轴向－弯曲－剪切耦合效应增加，沿不同方向加载下轴向、横向速度响应幅值明显增加。
용회전사선구진법분석계급일계전절변형효응적층합복합재료량순태동력향응；급출속도순태향응적회전사선구진법계산공식；계산분석축향－만곡－전절우합효응대층합량순태동력향응영향。결과표명，회전사선구진법가구해계급일계전절변형효응시층합량순태동력향응，차여유한원법해일치；횡향（축향）가재가인기명현적축향（횡향）향응，수포층각증대축향－만곡－전절우합효응증가，연불동방향가재하축향、횡향속도향응폭치명현증가。
The method of reverberation-ray matrix (MRRM)was extended to the transient dynamic response analysis of laminated composite beams based on the first shear deformation theory (FSDT).A theoretical model of laminated composite beam based on the MRRMand first shear deformation theory was established.The velocity responses of a laminated composite cantilever beam under smoothed triangular pulse force load were investigated.The results show their good agreement with those obtained by finite element method (FEM).The effect of ply-stacking sequence on transient dynamic response was also illustrated.It is concluded that the MRRMcan solve accurately the dynamic response of laminated composite beams.The axial-bending-shear coupling effects in asymmetrically laminated beams were analyzed by the MRRM.It is found that the axial (transverse)load can cause transverse (axial)dynamic response with the increase of the axial-bending-shear coupling coefficient and the amplitude of the coupled response also increases with the increase of coupling coefficient apparently.