Multibody System Dynamics

, Volume 26, Issue 4, pp 441–468

Frictional contact analysis of spatial prismatic joints in multibody systems

Article

DOI: 10.1007/s11044-011-9264-9

Cite this article as:
Qi, Z., Luo, X. & Huang, Z. Multibody Syst Dyn (2011) 26: 441. doi:10.1007/s11044-011-9264-9

Abstract

The contact analysis of spatial prismatic joints remains a hard problem due to its complex nature. In this paper, a methodology for the frictional contact analysis of rigid multibody systems with spatial prismatic joints is presented, which is free of calculating the relative motion between the slider and guide, and is particularly suitable to the case of clearances being tiny. Under the assumption of the slider and guide being rigid, we prove that all types of contacts in the joint can be converted to point-to-point contacts. At each of the candidate points, two gap functions are introduced. However, in the proposed method, not the values of these gap functions but the relations between them are essential. In view of the non-colliding contacts being predominant when clearances of joints are tiny, we formulate the contact forces in terms of resultant frictional forces in the joint, resulting in a linear complementarity problem. By the proposed method, details about the contacts including the impact instants can be obtained, although impacts are not taken into consideration explicitly, as indicated by the numerical examples in this paper.

Keywords

Contact analysis Spatial prismatic joints Multibody systems Friction Joints with clearances 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalianChina

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