Results 231 to 240 of about 2,580,794 (302)

Clearance for Welded Joints

Engineering Journal, 2019
Inadequate clearance can affect weld quality and efficiency. In extreme cases, obstructions may cause a lack of fusion between the base metal and the weld metal, causing a reduction in strength. Although flux cored arc welding (FCAW) and gas metal arc welding (GMAW) have replaced shielded metal arc welding (SMAW) as the primary fabrication processes ...
openaire   +1 more source

Optimization research on dynamic behavior for mechanism with clearance joint and wear

Proceedings of the Institution of mechanical engineers. Part C, journal of mechanical engineering science
This paper proposes a new optimization method by immune algorithm to reduce the impact of clearance joint and wear on the dynamics of mechanisms. Firstly, the dynamic model of crank-slider mechanism is built by Lagrange principle, and the wear phenomenon
Shun Gao, Shouwen Fan, Shuai Fan
semanticscholar   +1 more source

Effects of Spherical Clearance Joint on Dynamics of Redundant Driving Spatial Parallel Mechanism

Robotica (Cambridge. Print), 2020
SUMMARY This paper proposes a dynamic modeling method of redundant drive spatial parallel mechanism, dynamics of 4-UPS-RPU redundant driving spatial parallel mechanism considering spherical joint clearance are analyzed.
Xiulong Chen, Jingyao Guo
semanticscholar   +1 more source

Analysis of Joint Clearances in Multibody Systems

Multibody System Dynamics, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Investigation of an improved planar revolute clearance joint contact model with rough surface

Tribology International, 2019
A theoretical contact model of revolute joints with planar rough contacting surface is established in this paper. The influence of roughness is introduced in this model.
Jianan Guo, P. He, Zhansheng Liu, Hongyan Huang   +3 more
semanticscholar   +1 more source

Nonlinear dynamic characteristics and control of planar linear array deployable structures consisting of scissor-like elements with revolute clearance joint

Advances in Structural Engineering, 2020
This paper comprehensively deals with the parametric effects of the joint clearance and friction coefficient on the dynamics of planar deployable structures consisting of scissor-like elements (SLEs). The dynamic model for scissor deployable structure is
Bo Li, S. Wang, C. Gantes, U-Xuan Tan
semanticscholar   +1 more source

Dynamics of Mechanisms With Slider Joints and Clearance

Volume 6B: 18th Biennial Conference on Mechanical Vibration and Noise, 2001
Abstract In this study a planar mechanism with a rotating sliding joint is investigated. Periodic behavior is observed for zero clearance of the sliding joint. The sliding joint with clearance is modeled using a kinematic coefficient of restitution and a coefficient of friction.
Dan B. Marghitu, Eleonor D. Stoenescu
openaire   +1 more source

Modeling and Analysis of Spatial Flexible Mechanical Systems With a Spherical Clearance Joint Based on the LuGre Friction Model

Journal of Computational and Nonlinear Dynamics, 2019
A computational methodology for modeling spatial flexible mechanical systems with stick-slip friction in a spherical clearance joint is presented.
Xiao-ming Tan, Guo-ping Chen, H. Shao
semanticscholar   +1 more source

Dynamic response of a revolute joint with clearance

Mechanism and Machine Theory, 1996
The response of a revolute joint in a four-bar mechanism with a clearance is investigated. Motion of a rocker-arm pin at the ground connection is modelled using a Lagrangian approach. When the resulting equations of motion are solved numerically, they show non-linear dependence on both the size of the clearance and the coefficient of friction between ...
Jungkeun Rhee, Adnan Akay
openaire   +1 more source

Dynamic Response and Nonlinear Characteristics of Spatial Parallel Mechanism With Spherical Clearance Joint

Journal of Computational and Nonlinear Dynamics, 2019
Spherical joint is a type of common kinematic pair in spatial parallel mechanism. The existence of spherical joint clearance has many adverse effects on the mechanism.
Xiulong Chen, Yuewen Li, Yonghao Jia
semanticscholar   +1 more source