Dynamics of disc storing mechanism with joint clearance driven by hydraulic cylinder

Abstract

Disc storing mechanism driven by hydraulic cylinder is the key component to ensure the deep sea coring. However, clearance is inevitable for assembly in joint of mechanism lead to poor operational characteristics. To ensure design and working reliability, disc storing mechanism driven by hydraulic cylinder for benthic drill with clearance is analyzed from a dynamic view. With piston rod be equivalent to slider, engaging lugs at end of cylinder to revolute joint and contact impact model deal with clearance, the dynamic model of disc storing mechanism driving by piston rod is present. The simulation model for the mechanism with clearance driven by cylinder using Simulink is established and analysis of dynamics is investigated. The simulation results for the case with and without clearance are evaluated under different driving conditions for motion characteristics and driving force. The effect of clearance to disc storing mechanism driven by hydraulic cylinder is found. These supply a lead for moving parameters choosing and a theory basis for key parts designing of the mechanism.

Dynamic characteristics of planar linear array deployable structure based on scissor-like element with differently located revolute clearance joints

“…Some of these works focus on the planar systems where only one kinematic joint is modeled as a joint clearance. 17,18 Zhang et al 19 proposed an innovative design-of-experiment (DOE)based method for optimizing the performance of a mechanical system with the revolute joint clearance. Based on the simulation model, a polynomial function Kriging metamodel was established to bypass computationally intensive simulations of a computer model for different design parameter values in place of a more efficient and cost-effective mathematical model.…”

“…However, many of these research papers focus on the planar systems with rigid links in which only one kinematic joint is modeled as an imperfect joint. 11,13,16,[18][19][20][21][22][23][25][26][27][28][29][30][31]33 The results from such experimental and analytical models have been shown to provide important insights into the behavior of mechanical systems with clearance joints, but the models do not allow for the interactions of multiple kinematic clearance joints. In a real mechanical system, all joints should practically be real, and the dynamic behavior of one clearance revolute joint cannot be used as a general case for a mechanical system.…”

“…To date, there is a significant amount of available literature which discuses theoretical and experimental analysis of imperfect kinematic joints in a variety of planar and spatial mechanical systems with rigid or flexible links. 11–36 Some of these works focus on the planar systems where only one kinematic joint is modeled as a joint clearance. 17,18 Zhang et al.…”