On the transient dynamics of FGM cylindrical panels with cutout under thermal shock employing 2D Chebyshev-based energy method

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-03-07 DOI:10.1016/j.tws.2025.113176

Dongliang Zhang , Dengfeng Li , Jun Gao , Zhixin Wu , Chuan Jin

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引用次数: 0

Abstract

In numerous industrial applications, cylindrical panels often require cutout to serve functional purposes, while simultaneously enduring thermal loads. This study investigates the transient dynamic response of cylindrical panels with cutout, composed of functionally graded materials (FGMs), under rapid thermal shock. The FGMs, engineered from a ceramic-metal mixture, are tailored to withstand harsh thermal environments. By solving the heat conduction equation through appropriate discrete numerical methods, the temperature distribution within the panel is determined over time. Subsequently, the modified Lagrangian function of the structure is formulated using the first-order shear deformation theory (FSDT). The 2D Chebyshev-based Ritz approach is then utilized to minimize the Lagrangian energy function, providing an accurate dynamic response. For time evolution analysis, the Newmark time integration scheme is employed to capture the transient deflections. This research is the first to explore the thermally induced dynamic behavior of panels with cutouts, offering new insights into the impact of varying cutout dimensions and boundary conditions on structural performance. This study further employs a sensitivity analysis to evaluate the influence of varying material gradation on the panel's stability and thermal performance, providing deeper insights into optimizing structural design.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.