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利用动力学标准对次切线荷载作用下的叠层梁结构进行稳定性分析。该荷载由守恒和非守恒正切载荷组合而成,具有非守恒加载参数的特性,有助于研究荷载变化程度对于叠层梁稳定性的影响。利用动力虚功原理对叠层梁进行分析得到其切线刚度和质量矩阵。对各向同性叠层梁的守恒荷载计算结果与文献中的结论非常吻合。对于部分守恒的荷载,分析结果显示:针对各向同性叠层组合梁,在无阻尼情况下,所有小于或等于0.5的非守恒荷载参数的数值由发散不稳定性决定,其他的由则颤振不稳定性来决定。
Dynamic Analysis of Stability of Laminated Beam Structures Subjected to Tangential Load. The combination of conservation and non-conservative tangent loads, with non-conservative loading parameters, helps to study the effect of load variation on the stability of laminated beams. The tangent stiffness and mass matrix are obtained by analyzing the laminated beam with the principle of dynamic virtual work. The results of conservative load calculation for isotropic laminated beams are in good agreement with the conclusions in the literature. For partially conserved loads, the analysis results show that for an isotropic laminated composite beam, the values of all non-conservative load parameters less than or equal to 0.5 are determined by the divergence instability without damping and the others Instability to decide.