1997 Volume 59 Issue 1 Pages 11-20
In this study, the static elastic-plastic analysis for the monocoque-type frame was carried out numerically. Several mechanical characteristics for three models in terms of structural strength were discussed considering those geometry deflection and stress distribution as evaluation criteria. Comparing with an A-model which was modeled on a marketable tractor, the alleviation of plastic strain, maximum geometry deformation and stress were attained by about 14%, 72% and 47% respectively in a B-model increased sidewall thickness. Stress fluctuations caused by parameter's manipulation were pointed out quantitatively through the modification of the thickness of sidewall at differential housing. In a C-model which was added partition wall, the alleviation of plastic strain, maximum geometry deformation and stress were also attained by about 33%, 88% and 54% respectively. It was found that the validity of the setting of the partition wall was confirmed. Accordingly, some quantitative tendencies in von Mises equivalent stress and equivalent plastic strain for specific two nodes in partition wall were clarified putting a prescribed load pattern per one cycle.
