多体系统碰撞动力学中接触力模型的研究进展

王庚祥, 马道林, 刘洋, 刘才山 - 力学学报, 2022 - lxxb.cstam.org.cn
接触碰撞行为作为大自然与多体系统中的常见现象, 其接触力模型对于多体系统的碰撞行为机理
研究与性能预测至关重要. 静态弹塑性接触模型与考虑能量耗散的连续接触力模型是研究接触 …

[PDF][PDF] Research progress of contact force models in the collision mechanics of multibody system

G Wang, D Ma, Y Liu, L Caishan - Chinese Journal of Theoretical …, 2022 - ore.exeter.ac.uk
Impact behavior is a ubiquitous phenomenon in multibody systems. The contact force model
is a pivotal tool to predict the contact characteristics of multibody systems. At present, there …

Simulation and experimental studies of a vibro-impact capsule system driven by an external magnetic field

J Zhang, Y Liu, D Zhu, S Prasad, C Liu - Nonlinear Dynamics, 2022 - Springer
This paper studies the electromagnetic field used for driving a vibro-impact capsule
prototype for small bowel endoscopy. Mathematical models of the electromagnetic field and …

[HTML][HTML] Self-propelled capsule endoscopy for small-bowel examination: proof-of-concept and model verification

B Guo, Y Liu, R Birler, S Prasad - International Journal of Mechanical …, 2020 - Elsevier
This paper reports the experimental study of a vibro-impact self-propulsion technique
applying for small-bowel endoscopy by using a mesoscale capsule prototype, which is 56.9 …

Experimental and numerical studies of intestinal frictions for propulsive force optimisation of a vibro-impact capsule system

B Guo, E Ley, J Tian, J Zhang, Y Liu, S Prasad - Nonlinear Dynamics, 2020 - Springer
This paper studies the intestinal frictions acting on a millimetre-scale self-propelled capsule
(26 mm in length and 11 mm in diameter) for small bowel endoscopy by considering …

[HTML][HTML] Finite element analysis of a self-propelled capsule robot moving in the small intestine

J Tian, Y Liu, J Chen, B Guo, S Prasad - International Journal of …, 2021 - Elsevier
In order to optimise the passage of the self-propelled capsule robot in the small intestine,
capsule-intestine interactions were studied in this paper via finite element (FE) analysis and …

Bifurcation analysis of period-1 attractors in a soft impacting oscillator

X Lyu, J Bai, X Yang - Nonlinear Dynamics, 2023 - Springer
A soft impacting oscillator with symmetric constraints is considered with a focus on grazing-
induced bifurcations and chaotic crises. PF-type grazing bifurcation is defined and described …

A vibration-driven locomotion robot excited by time-varying stiffness

X Wang, L Meng, Y Yao, H Li - International Journal of Mechanical …, 2023 - Elsevier
This investigation is aimed to propose a vibration-driven friction-induced robot structure with
time-varying stiffness. Different from the common vibration-driven robots with force …

Probabilistic response analysis of nonlinear vibro-impact systems with two correlated Gaussian white noises

J Li, D Liu, M Li - International Journal of Non-Linear Mechanics, 2023 - Elsevier
The response distributions of a dynamic system under the effect of correlation noise not only
demonstrated a Gaussian symmetric distribution, but also exhibited a non-Gaussian skewed …

[HTML][HTML] Nonlinear characteristics identification of an impact oscillator with a one-sided elastic constraint

B Tian, S Yin, Y Liu, JL Monsalve - Journal of Sound and Vibration, 2024 - Elsevier
Impacting systems are widely used in many engineering applications, such as self-propelled
robots, energy harvesting and percussive drilling, which exhibit rich and complex nonlinear …