Massless Links with External Forces and Bushing Effect for Multibody Dynamic Analysis
- Resource Type
- Academic Journal
- Authors
- Jeong-Hyun Sohn; Wan-Suk Yoo; Keum-Shik Hong; Kwang-Suk Kim
- Source
- Journal of Mechanical Science and Technology. 2002-06 16(6):810-818
- Subject
- Language
- Korean
- ISSN
- 1738-494X
1976-3824
When the contribution of lightweight components to the total energy of a system is small. the inertia effects are sometimes ignored by replacing them to massless links. For example. a revolute-spherical massless link generates two kinematic constraint equations between adjacent bodies and allows four relative degrees of freedom. In this paper, to implement a massless link systematically in a computer program using the velocity transformation technique. the velocity transformation matrix of massless links is derived and numerically implemented. The velocity transformation matrix for a revolute-spherical massless link and a revolute-universal massless link are appeared as a 6×4 matrix and a 6×3 matrix. respectively. A massless link model in a suspension composite joint transmitting external forces is also developed and the numerical efficiency of the proposed model is compared to a conventional multibody model. For a massless link transmitting external forces. forces acting on links are resolved and transmitted to the attached points with a quasi-static assumption. Numerical examples are presented to verify the formulation.