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Abstract: Research on compliant mechanisms and fully compliant
mechanisms has been a hot issue in recent years. The kinematics analysis
of fully compliant mechanisms is discussed. Because of spherical joint
in this mechanism, the method of pseudo-rigid-body model which has been
extensively used in the analysis and design of the compliant mechanisms
with only revolute flexure joints is limited in analyzing its
kinematics. In addition, the method of finite element analysis is also
very complicated. So an expanded pseudo-rigid-body model method is
presented. To specify it, the stiffness models of the flexible joint by
using the displacement matrix method in structural analysis are
established firstly. The close-loop displacement equations of mechanism
are derived through the transformations of a series of coordinate
systems. Thus both the forward and inverse displacement solutions of the
mechanism are presented.
Key words: Compliant mechanism Flexure hinge Kinematics Fully
compliant mechanism
CLC No: TH112.5
国家自然科学基金(50075010)和“863”高技术(863-512-98-04-26)资助项目. 选自2000年第一届机械工程学术会议, 20010815
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