湿热效应对含缺口层合复合材料自由振动与屈曲的影响
Hygrothermal effects on free vibration and buckling of laminated composites with cutouts
AI总结：
研究湿浓度和热梯度对层合板自由弯曲振动和屈曲的影响，分析缺口对整体响应的影响，采用扩展有限元法进行分析。
摘要：
本文研究了湿浓度和热梯度对层合复合板自由弯曲振动和屈曲的影响。分析了中央位置缺口对整体响应的影响。分析在扩展有限元法框架下进行。采用Heaviside函数捕捉位移跃变，使用富化剪切灵活的四节点四边形单元进行空间离散化。该公式考虑了横向剪切变形，并考虑了在高湿度浓度和温度下的层板材料特性。数值研究了板的几何形状、缺口几何形状、湿度浓度、热梯度和边界条件对自由弯曲振动的影响。
英文摘要：
The effect of moisture concentration and the thermal gradient on the free flexural vibration and buckling of laminated composite plates are investigated. The effect of a centrally located cutout on the global response is also studied. The analysis is carried out within the framework of the extended finite element method. A Heaviside function is used to capture the jump in the displacement and an enriched shear flexible 4-noded quadrilateral element is used for the spatial discretization. The formulation takes into account the transverse shear deformation and accounts for the lamina material properties at elevated moisture concentrations and temperature. The influence of the plate geometry, the geometry of the cutout, the moisture concentration, the thermal gradient and the boundary conditions on the free flexural vibration is numerically studied.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
