Dynamic characteristics and vibration control of composite laminate wall panels in electric aircraft using NiTi shape memory alloys

IF 5 1区工程技术 Q1 ENGINEERING, AEROSPACE

Aerospace Science and Technology Pub Date : 2024-08-30 DOI:10.1016/j.ast.2024.109517

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引用次数: 0

Abstract

This paper investigates the dynamic characteristics and vibration control of a new-energy electric aircraft cockpit wall panel. An innovative boundary-splitting Rayleigh-Ritz method is introduced for modal analyses of wall panel structures in thermal environments, verified with the hammering and finite element methods, showing a maximum error of 5.42 %. NiTi shape memory alloy (SMA) wires are embedded in composite structures for vibration control, with the first theoretical-experimental validation performed. A parametric fitting-computational model for NiTi-SMA is developed to extract mechanical parameters from hysteresis data. Theoretical models are decoupled into dynamical equations using the Galerkin truncation method. The damping capability of NiTi-SMA is demonstrated by solving the amplitude using the harmonic balance and Runge-Kutta methods. Room-temperature and variable-temperature vibration tests show over 30 % vibration control capability with optimized embedding methods. These experimental results confirm the theoretical findings, providing support for the analysis and vibration control of new-energy aircraft.

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使用镍钛形状记忆合金的电动飞机复合层压壁板的动态特性和振动控制

本文研究了新能源电动飞机驾驶舱壁板的动态特性和振动控制。针对热环境下壁板结构的模态分析，引入了一种创新的边界分裂 Rayleigh-Ritz 方法，并通过锤击法和有限元法进行了验证，结果显示最大误差为 5.42%。将镍钛形状记忆合金（SMA）线嵌入复合材料结构中进行振动控制，并首次进行了理论-实验验证。为镍钛-SMA 开发了一个参数拟合计算模型，以便从磁滞数据中提取机械参数。使用 Galerkin 截断法将理论模型解耦为动力学方程。通过使用谐波平衡和 Runge-Kutta 方法求解振幅，证明了 NiTi-SMA 的阻尼能力。室温和变温振动测试表明，采用优化的嵌入方法，振动控制能力超过 30%。这些实验结果证实了理论结论，为新能源飞机的分析和振动控制提供了支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.