TY - JOUR
T1 - 冲焊型液力变矩器叶片回弹规律及抑制技术
AU - Liu, Cheng
AU - Chen, Bohan
AU - Mu, Hongbin
AU - Yan, Qingdong
AU - Wei, Wei
N1 - Publisher Copyright:
© 2023 Beijing Institute of Technology. All rights reserved.
PY - 2023/3
Y1 - 2023/3
N2 - Stamping welded hydrodynamic torque converter, the core part of automatic transmission, is widely used in automobiles because of easy to mass-produce. Its performance is directly determined by the shape of the blade. Because the blade occurs springback deformation in the stamping process, this article focuses on the blade stamping springback rule and its effect on performance. First, the stamping process and springback deviation were simulated by finite element method and the influence of different springback deviations on torque converter external characteristic was studied by numerical simulation of flow field. Then the blade wrinkling and springback were inhibited by setting draw-beads in the middle streamline of the blade. Finally, the blade sample was manufactured to verify the effectiveness of springback suppression, and the calculation accuracy of flow field numerical model was verified by the hydraulic torque converter prototype test. The results show that, the turbine outlet springback has a significant effect on the performance of torque converter. The maximum efficiency and the stall pump capacity increase by 0.067% and 8.18% respectively, and stall torque ratio decreases by 1.41%. The prototype experiment shows that the accuracy of simulation model and the computational fluid dynamics model is higher, and the calculated results have high coincidence degree with the actual results. The draw-bead can better inhibit the maximum springback deviation of blades and improve the springback distribution.
AB - Stamping welded hydrodynamic torque converter, the core part of automatic transmission, is widely used in automobiles because of easy to mass-produce. Its performance is directly determined by the shape of the blade. Because the blade occurs springback deformation in the stamping process, this article focuses on the blade stamping springback rule and its effect on performance. First, the stamping process and springback deviation were simulated by finite element method and the influence of different springback deviations on torque converter external characteristic was studied by numerical simulation of flow field. Then the blade wrinkling and springback were inhibited by setting draw-beads in the middle streamline of the blade. Finally, the blade sample was manufactured to verify the effectiveness of springback suppression, and the calculation accuracy of flow field numerical model was verified by the hydraulic torque converter prototype test. The results show that, the turbine outlet springback has a significant effect on the performance of torque converter. The maximum efficiency and the stall pump capacity increase by 0.067% and 8.18% respectively, and stall torque ratio decreases by 1.41%. The prototype experiment shows that the accuracy of simulation model and the computational fluid dynamics model is higher, and the calculated results have high coincidence degree with the actual results. The draw-bead can better inhibit the maximum springback deviation of blades and improve the springback distribution.
KW - external characteristics
KW - fluid power transmission and control
KW - numerical simulation
KW - springback
KW - stamping welded hydrodynamic torque converter
UR - http://www.scopus.com/inward/record.url?scp=85170213811&partnerID=8YFLogxK
U2 - 10.15918/j.tbit1001-0645.2022.055
DO - 10.15918/j.tbit1001-0645.2022.055
M3 - 文章
AN - SCOPUS:85170213811
SN - 1001-0645
VL - 43
SP - 274
EP - 282
JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
IS - 3
ER -