Results 11 to 20 of about 121 (103)

Wave control of a flexible space tether based on elastic metamaterials

International Journal of Mechanical System Dynamics, 2023
This study proposes a spider‐web elastic metamaterial to suppress vibrations in space slender structures, such as flexible space tethers. The metamaterial consists of unit cells that are periodically distributed on the space tether to obtain band gaps ...
Yexiong Huang, Enmin Chen, Jialiang Sun, Dongping Jin   +3 more
doaj   +2 more sources

Dynamic modeling and analysis of the looped space tether transportation system based on ANCF

International Journal of Mechanical System Dynamics, 2022
A high‐fidelity multibody‐system dynamic model of the looped tether transportation system (L‐TTS) is proposed in this study to study its large deformation as well as large overall motion.
Jie Yang, Qingtao Wang, Zhiyong Zhang, Zhendong Liu, Shidong Xu, Gangqiang Li   +5 more
doaj   +2 more sources

Dynamical Analysis of the Hose–Drogue System Considering Attitude Changes

International Journal of Aerospace Engineering
The hose–drogue system is highly sensitive to aerodynamic disturbances and aircraft maneuvers during aerial refueling, posing risks to operational safety.
Yuhang Wang, Haibo Wan, Yunfei Wang, Zhiye Wang, Yufeng Huang, Zhanao Long, Xudong Gu, Zichen Deng, Xuefeng Wang   +8 more
doaj   +2 more sources

Continuum Robots: An Overview

Advanced Intelligent Systems, Volume 5, Issue 5, May 2023., 2023
With slender, flexible bodies, continuum robots achieve a long reach through narrow and tortuous environments, enabling otherwise unachievable tasks for medical, industrial, and service applications. The recent surge in research on these robots leads to significant advances in design, modeling, and control methods, here examined with a comprehensive ...
Matteo Russo, Seyed Mohammad Hadi Sadati, Xin Dong, Abdelkhalick Mohammad, Ian D. Walker, Christos Bergeles, Kai Xu, Dragos A. Axinte   +7 more
wiley   +1 more source

Application of stable inversion to flexible manipulators modeled by the absolute nodal coordinate formulation

GAMM-Mitteilungen, Volume 46, Issue 1, March 2023., 2023
Abstract Compared to conventional robots, flexible manipulators offer many advantages, such as faster end‐effector velocities and less energy consumption. However, their flexible structure can lead to undesired oscillations. Therefore, the applied control strategy should account for these elasticities. A feedforward controller based on an inverse model
Svenja Drücker, Robert Seifried
wiley   +1 more source

Nominal geometry and force measures for solids and fluids

International Journal of Mechanical System Dynamics, Volume 2, Issue 3, Page 249-252, September 2022., 2022
Abstract Understanding solid‐ and fluid‐inertia forces and their coupling with the gravity potential in complex motion scenarios is necessary for evaluating system stability and identifying root causes of system failure and accidents. Because solids and fluids have an infinite number of degrees of freedom and distributed inertia and elasticity, having ...
Ahmed A. Shabana
wiley   +1 more source

Multibody system transfer matrix method: The past, the present, and the future

International Journal of Mechanical System Dynamics, Volume 2, Issue 1, Page 3-26, March 2022., 2022
Abstract The multibody system transfer matrix method (MSTMM), a novel dynamics approach developed during the past three decades, has several advantages compared to conventional dynamics methods. Some of these advantages include avoiding global dynamics equations with a system inertia matrix, utilizing low‐order matrices independent of system degree of ...
Xiaoting Rui, Jianshu Zhang, Xun Wang, Bao Rong, Bin He, Zhan Jin   +5 more
wiley   +1 more source

Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis

IET Electrical Systems in Transportation, Volume 11, Issue 3, Page 269-277, September 2021., 2021
Abstract To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph and the contact wire, which usually deteriorates the current collection quality.
Wenping Chu, Yang Song, Fuchuan Duan, Zhigang Liu   +3 more
wiley   +1 more source

Stable Inversion for Flexible Multibody Systems Using the ANCF

Proceedings in Applied Mathematics and Mechanics, Volume 20, Issue 1, January 2021., 2021
Abstract Flexible robots are often non‐minimum phase systems. Thus, their inverse model must be computed by stable inversion. Here, a simplification to the stable inversion process is proposed, which enables its application to complex underactuated multibody systems.
Svenja Drücker, Robert Seifried
wiley   +1 more source

A Comparative Study on the Wind Deflection of Railway Overhead Contact Line Based on Empirical Formula and Finite Element Approach

Shock and Vibration, Volume 2021, Issue 1, 2021., 2021
The assessment of wind deflection of the railway overhead contact line (OCL) is of great importance to ensure the safe and reliable operation of the electrified railway. This paper performs a comparative study of the railway OCL wind deflection based on the traditional empirical formula and finite element method (FEM).
Wenping Chu, Yang Song, Zhigang Liu, Edoardo Sabbioni   +3 more
wiley   +1 more source