This study examines the dynamic behavior of conical-cylindrical-conical shells with ring-stiffeners composed of functionally graded materials (FGM) interacting with Pasternak and Winkler foundations. Vibration analysis is performed using the Continuous Element Method (CEM) or Dynamic Stiffness Method, incorporating the First-Order Shear Deformation Theory (FSDT). The study additionally investigates the effects of various FGM properties and foundation parameters. Numerical computations confirm the benefits of the Continuous Element Method, especially for complex structure. This approach requires a minimal number of elements while delivering high-precision results, efficient data storage, and effective analysis in medium and high-frequency domains.

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Free Vibration Analysis of Combined Functionally Graded Material Stiffened Shell on Winkler–Pasternak Foundation

  • Manh Cuong Nguyen,
  • Quoc Hung Nguyen,
  • Tuan Hai Nguyen

摘要

This study examines the dynamic behavior of conical-cylindrical-conical shells with ring-stiffeners composed of functionally graded materials (FGM) interacting with Pasternak and Winkler foundations. Vibration analysis is performed using the Continuous Element Method (CEM) or Dynamic Stiffness Method, incorporating the First-Order Shear Deformation Theory (FSDT). The study additionally investigates the effects of various FGM properties and foundation parameters. Numerical computations confirm the benefits of the Continuous Element Method, especially for complex structure. This approach requires a minimal number of elements while delivering high-precision results, efficient data storage, and effective analysis in medium and high-frequency domains.