Open AccessDynamics analysis of planar linear array deployable structures with multiple clearance joints
Author(s) -
Бо Ли,
Hong Zhao Liu,
Jia Hua Zhang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/793/1/012046
Subject(s) - joint (building) , kinematics , contact force , torque , position (finance) , universal joint , structural engineering , planar , coupling (piping) , process (computing) , computer science , engineering , control theory (sociology) , physics , mechanical engineering , classical mechanics , computer graphics (images) , control (management) , finance , artificial intelligence , economics , thermodynamics , operating system
The purpose of this paper is to investigate the dynamic characteristic of the scissor linear array deployable structure under the coupling action of clearance joints, where the kinematic model of the deployable structure with clearance is established according to the principle of the motion between joint elements. The normal and tangential contact forces between contact components are respectively described using the Flores contact force model and modified Column friction model. In the sequel of this process, the impact forces between the connected components are converted to the mass centers of links connected by this clearance joint, and the converted contact force and additional torque were integrated to the generalized force in motion equations of the deployable structure, and then the effect of joint clearance is introduced to deployable syetem. The simulation results show that the dynamic characteristics of the mechanism are very sensitive to the clearance position, and the movement of a joint clearance will affect the movement of the other joint clearance, which shows that clearance joints in deployable structure have a strong dynamic interaction and all the joints should be modeled as real joints.