Since 1963
ARTICLE
Analysis of vibration characteristics of porous functionally graded conical shell in thermal environments
1
School of Advanced Manufacturing, Nanchang University, Nanchang, China
2
School of Aeronautical Manufacturing and Mechanical Engineering, Nanchang Hangkong University, Nanchang, China
Submission date: 2025-12-29
Final revision date: 2026-06-15
Acceptance date: 2026-07-16
Online publication date: 2026-08-17
KEYWORDS
TOPICS
ABSTRACT
This study investigates the free vibration modal frequencies of a metal-ceramic functionally graded porous conical shell under thermal loading. Temperature-dependent material properties and two porosity distribution patterns, namely uniform and non-uniform porosity distributions,
are considered. Based on the Sanders shell theory and the Rayleigh–Ritz method with Chebyshev polynomials, the model is verified by FEM within 5.04% error. Parametric analysis shows that temperature dominates at low wave numbers, while porosity governs at high wave numbers. Increasing the S-shaped volume fraction exponent raises frequencies and weakens thermal effects, providing a theoretical basis for high-temperature engineering applications.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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