Abstract
In this paper, the dynamic behavior of the slider-crank mechanism with clearance fault is investigated. The revolute joint with clearance is equivalent to a virtual massless rod, and then the dynamic equation of the crank slider mechanism with clearance is established by the Lagrangian method. In addition, a three-dimensional dynamic model of the crank slider mechanism with clearance is also established by ADAMS. The numerical results show that the clearance affects the displacement and velocity response of the crank-slider mechanism in a weak way, but influences the acceleration response of the mechanism in a significant manner. Due to the existence of the clearance, the revolute joint of the mechanism produces a rub-impact phenomenon, and the larger the clearance, the greater the impact strength. During the rub-impact process, there are three kinds of motion states of separation, collision and contact occur.
Highlights
Slider-crank mechanism is a typical reciprocating mechanical system that includes a plurality of revolute joints and translational joints
For the non-lubrication of the revolute joint with clearance, considering the elastic deformation of the rod, Zheng et al [3, 4] studied the dynamic characteristics of the rigid-flexible coupling slider- crank mechanism, and analyzed the influence of the clearance size, the crankshaft speed and the number of clearances on the dynamic response
Rub-impact of the revolute joint with clearance will inevitably affect the dynamic behavior of the slider-crank mechanism, and how its influence law evolves is the research content of this section
Summary
Slider-crank mechanism is a typical reciprocating mechanical system that includes a plurality of revolute joints and translational joints. For the mechanism members are rigid and do not consider lubrication, Flores et al [2] proposed a general method for multi-body dynamics modeling and analysis for revolute joints with multi-clearance. For the non-lubrication of the revolute joint with clearance, considering the elastic deformation of the rod, Zheng et al [3, 4] studied the dynamic characteristics of the rigid-flexible coupling slider- crank mechanism, and analyzed the influence of the clearance size, the crankshaft speed and the number of clearances on the dynamic response. In order to reduce the adverse effects of the revolute joint with clearance, Varedi [14] proposed a method based on particle swarm optimization to optimize the mass distribution of the mechanism to reduce or eliminate the impact force at the joint with clearance. The effectiveness of the algorithm is verified by an example
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
