【摘要】 本文应用各向异性层合壳体理论的有限元位移法对层合锥柱结合壳进行了强度分析。给出了各向同性锥柱结合壳和复合材料层合维柱结合壳的数值结果。各向同性锥柱结合壳的数值结果和三维弹性理论的有限元法计算结果作了比较,两者符合得很好。复合材料层合锥柱结合壳的数值结果也和用轴对称曲壳单元程序的计算结果作了比较,两者也很一致。更多还原

【Abstract】 The laminated composite cone-cylindrical connected shell un-der internal pressure is analysed by the use of finite element dis-placement method based on laminated anisotropic shell theory. The numerical calculations are performed by using a computer Pro-gram DDJTTQ-3, which was developed from the general purpose program DDJ-W for composed structure analysis The cone-cylidrical connected shell is modeled by using triangular lami-nated composite shell elements on the base of discrete Kirchhoff＇s hypothesis and taking coupling effect into consideration. The ex-pression of foregoing element stiffness matrix is given in the papar. Two numerical examples are presented for both isotropic and laminated composite cone-cylindrical shell junction. The numerical results show that the computational results in this paper agree well with those from 3-D and axisymmetric curve finite element methods, which proves that the triangular laminated composite shell element is quite accurate. The displacement variation along the shell is strongly dependent on the elastic behaviour and ply numbers of composite materials. The work is supported by the Chinese academy science fund.更多还原