Tìm kiếm theo cụm từ
Chi tiết
Tên The effect of inertial mass and excitation frequency on a Duffing vibro-impact drifting system
Lĩnh vực Cơ học ứng dụng
Tác giả Nguyễn Văn Dự, Dương Thế Hùng, Chu Ngọc Hùng, Ngô Quốc Huy
Nhà xuất bản / Tạp chí Elsevier - International Journal of Mechanical Sciences Tập 124 Số 125 Năm 2017
Số hiệu ISSN/ISBN 0020-7403
Tóm tắt nội dung

This paper presents the mathematical modeling and dynamical analysis to examine the coupled effect of inertial mass and excitation frequency on a Duffing vibro-impact device used for autogenous mobile systems. The Duffing oscillation with a nonlinear spring is utilized to generate impacts and thus to drive the whole system. Forward motion is observed in a wide range of the excited frequency and the mass ratio. The nonlinear interaction between the system body and the inertial mass can provide a backward motion of the system for a narrow range of the mass ratio and the frequency of excitation. The proposed model has validated by an experimental implementation, and thus can be used as a useful tool to optimize the system dynamics. Bifurcation study is carried out to provide a better understanding for design and selection of the system parameters. The mathematical model of the system with dimensionless parameters allows extending the results to both large- and micro-scale applications.