Soon(1996-09-01); recommended: Yeh-Liang Hsu (2010-06-12).
Note: This paper is published in JSME International Journal, Series C,
Vol. 39, No. 3, pp. 597-605, September 1996.
shape design of engine connecting rod with special lumping mass constraint
In a typical
reciprocating internal combustion engine, the connecting rod (conrod) is
generally working under high-speed rotation and heavy dynamic loading, with
relatively more complicated dynamics behaviour than other components. The key
issue in this study is to achieve an optimal design shape of the conrod not
only with the optimum stress distribution, but also under the special
constraint of accurate lumping-mass at piston pin and crankpin centers for
optimal dynamic characteristics. Herein, the varied-mass lumping method, the
finite element method and the optimization theory are combined to achieve the
innovative design objective of dual optimization. This optimization is aided by
the sensitivity analysis technique, the finite difference scheme, and the
sequential secondary programming method to achieve a conrod shape design with
fully stressed boundary curve and desirable dynamics features.