期刊
MECHANISM AND MACHINE THEORY
卷 142, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechmachtheory.2019.103580
关键词
Mechanical generation of planar curve envelopes; Bottema's instantaneous invariants; Burmester theory
It is herein addressed the generation of planar curves by means of circles envelopes. The theoretical approach follows from a combined use of intrinsic geometry and the derivatives of Euler-Savary equation for conjugate profiles. The analytical results deduced are general and include, as particular cases, the formulas for the computation of classic and generalized Burmester points. Furthermore, also as particular case, follows the generation of planar curves as envelopes of a moving straight line. A new analytical form of the cubic of stationary is also presented. All the results are expressed in terms of classic kinematic invariants. In the Appendix the relationships of these invariants with those named after Bottema are deduced. Numerical examples are also discussed. (C) 2019 Published by Elsevier Ltd.
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