有限元法
模态分析
流离失所(心理学)
结构工程
情态动词
起落架
机械工程
特征向量
工程类
机床
计算机科学
材料科学
心理学
物理
量子力学
高分子化学
心理治疗师
作者
Venanzio Giannella,Giovanni Baglivo,Rosario Francesco Giordano,Raffaele Sepe,Roberto Citarella
出处
期刊:Metals
[MDPI AG]
日期:2022-05-29
卷期号:12 (6): 937-937
被引量:3
摘要
The “Electro-mechanical Landing gear system Integration for Small Aircraft” (E-LISA) research project has the objective of developing an innovative “iron bird”, a testing facility dedicated to executing tests on an innovative landing gear of a small aircraft. This document presents the structural analyses of this complex testing machine performed with the Finite Element Method (FEM). Key purposes of these numerical simulations were the quantifications of the stress and displacement fields under the loading conditions foreseen for the machine. A modal analysis was performed with the aim of calculating eigenvalues and eigenvectors useful to provide an assessment of the structural dynamic response. The most critical mode shapes and the related frequencies were calculated, and the potentially critical rotational speeds were quantified. Finally, the Peak Stress Method (PSM) was adopted to quantify the fatigue resistance of the most critical weldments and an infinite fatigue life was assessed for the most critical one. The design of the machine, which is currently under manufacturing, was validated by the structural analyses presented here.
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