Applied Mathematics and Mechanics >
A variational differential quadrature formulation for buckling analysis of anisogrid composite lattice conical shells
Received date: 2025-05-17
Revised date: 2025-09-03
Online published: 2025-10-29
Supported by
Project supported by the Shanghai Aerospace Science and Technology Innovation Foundation (No. SAST2021048)
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Anisogrid composite lattice conical shells, which exhibit varying stiffness along their cone generators, are widely used as interstage structures in aerospace applications. Buckling under axial compression represents one of the most hazardous failure modes for such structures. In this paper, the smeared stiffness method, which incorporates the effect of component torsion, is used to obtain the equivalent stiffness coefficients for composite lattice conical shells with triangular and hexagonal patterns. A unified framework based on the variational differential quadrature (VDQ) method is established, leveraging its suitability for asymptotic expansion to determine the critical buckling loads and the
Yongqi LIU , Jianwei WANG , Dong DU , Guohua NIE . A variational differential quadrature formulation for buckling analysis of anisogrid composite lattice conical shells[J]. Applied Mathematics and Mechanics, 2025 , 46(11) : 2155 -2176 . DOI: 10.1007/s10483-025-3310-9
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