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Structural analysis of 55hp servo-based hydrostatic transmission
J. G. Won(원종근),S. G. Chung(정성교),J. S. Jeong(정재수),J. I. Yoon(윤종일) 유공압건설기계학회 2021 유공압건설기계학회 학술대회논문집 Vol.2021 No.11
The hydrostatic transmission (HST) is composed of rotary parts, shafts, valve plate, swash plate, and servo pistons. Securing the structural stability of each part of HST has a great impact on product safety. In this study, structural stability analysis of HST applied to agricultural machinery and industrial vehicles was performed by using ANSYS software. For the conservative evaluation, the highest pressure conditions, 35.5 MPa and 2 MPa pilot pressure, were applied as load conditions. The number of grids used in the calculations ranged from 0.4 to 0.8 million, depending on the modeling. Structural analysis was performed on important parts, and the safety factor characteristics in each part were analyzed. As a result of structural stability analysis of major parts of HST, all parts had a safety factor of 1.5 or higher and were judged to be structurally safe (Table. 1). The results of this study are expected to provide important data for designing HST system.