球盘内球吸收体平面模型的数值模拟

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Periodica Polytechnica-Civil Engineering Pub Date : 2023-05-08 DOI:10.3311/ppci.21725

Marek Kawulok, S. Pospíšil, N. Freiherrová, D. Juračka

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引用次数: 0

摘要

本文的目的是研究由两部分组成的球形吸收体的行为，一个内球和一个支撑凸球盘，其中放置了球。仅考虑系统的平面特性，推导了一组控制非线性微分方程，并进行了数值求解。首先，将系统置于支承碗的谐波激励下，分析了系统的时间响应。通过逐渐改变激励的角频率，得到了一条共振曲线，并详细地研究了激励力的变化幅度和非线性行为。研究了内部阻尼和不同设置对吸振器特性的影响。本文还对所选初始条件对的相图进行了数值分析。

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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Numerical Simulation of a Planar Model of a Ball Absorber in a Spherical Dish

This paper aims to investigate the behavior of a spherical absorber composed of two parts, an inner sphere and a supporting convex spherical dish in which the ball is placed. Considering only the planar behavior of the system, a set of governing nonlinear differential equations was derived and solved numerically. Firstly, the system is exposed to the harmonic excitation of the supporting bowl and its time response is analyzed for all time dependent variables. By gradually changing the angular frequency of the excitation, a resonance curve is obtained, which is examined in detail with respect to the changing amplitudes of the excitation force and the nonlinear behavior. The effect of internal damping and different settings of the absorber characteristics are also investigated. The effect of initial conditions without the presence of an external excitation force is also numerically analyzed by means of phase portraits for selected pairs of initial conditions.

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来源期刊

Periodica Polytechnica-Civil Engineering 工程技术-工程：土木

CiteScore

3.40

自引率

16.70%

发文量

审稿时长

12 months

期刊介绍： Periodica Polytechnica Civil Engineering is a peer reviewed scientific journal published by the Faculty of Civil Engineering of the Budapest University of Technology and Economics. It was founded in 1957. Publication frequency: quarterly. Periodica Polytechnica Civil Engineering publishes both research and application oriented papers, in the area of civil engineering. The main scope of the journal is to publish original research articles in the wide field of civil engineering, including geodesy and surveying, construction materials and engineering geology, photogrammetry and geoinformatics, geotechnics, structural engineering, architectural engineering, structural mechanics, highway and railway engineering, hydraulic and water resources engineering, sanitary and environmental engineering, engineering optimisation and history of civil engineering. The journal is abstracted by several international databases, see the main page.