Nonlinear Buckling Analysis of Stiffened Carbon Nanotube-Reinforced Cylindrical Shells Subjected to External Pressure in Thermal Environment

• Published in: Mechanics of composite materials Vol. 59; no. 4; pp. 779 - 794
• Main Authors: Dong, Dang Thuy, Hieu, Pham Thanh, Duc, Vu Minh, Phuong, Nguyen Thi, Tien, Nguyen Van, Nam, Vu Hoai
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.09.2023; Springer; Springer Nature B.V
• Subjects: Analysis; Carbon nanotubes; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Composite materials; Composites; Cylindrical shells; Deflection; External pressure; Galerkin method; Glass; Laws, regulations and rules; Materials Science; Nanotubes; Natural Materials; Nonlinearity; Postbuckling; Shell theory; Solid Mechanics; Stiffeners; Thermal environments; cylindrical shell; stiffener; thermal environment; nonlinear buckling; external pressure; CNT-reinforced composite
• ISSN: 0191-5665; 1573-8922
• DOI: 10.1007/s11029-023-10131-9

The main aim of this paper is to study the nonlinear buckling behavior of carbon nanotube-reinforced (CNT-reinforced) cylindrical shells with the CNT-reinforced stiffeners under external pressure taking into account the effects of uniform temperature rise. A new design of stiffener system is proposed for CNT-reinforced cylindrical shells with five cases of the CNT distribution law for shell and stiffeners. A modified homogenization technique for CNT-reinforced stiffeners is developed and presented. Based on the Donnell shell theory and the von Kármán nonlinearity assumption, the Galerkin method is applied with the solution of deflection approximated in threeterm form, the critical buckling, and load-deflection postbuckling curves can be achieved in explicit expressions. Effects of the CNT-reinforced stiffeners, the thermal temperature, and the CNT-reinforced parameters on the external pressure buckling responses are numerically indicated and validated.