| 引用本文: | 魏巍,刘旭,刘博深,闫清东.基于厚度变化的液力变矩器轻量化潜力研究[J].哈尔滨工业大学学报,2020,52(1):91.DOI:10.11918/201806009 |
| WEI Wei,LIU Xu,LIU Boshen,YAN Qingdong.Light weight potential study of hydrodynamic torque converter based on thickness variation[J].Journal of Harbin Institute of Technology,2020,52(1):91.DOI:10.11918/201806009 |
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| 基于厚度变化的液力变矩器轻量化潜力研究 |
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魏巍1,2,刘旭1,刘博深1,3,闫清东1,2
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(1.北京理工大学 车辆传动国家重点实验室,北京 100081; 2.北京理工大学 机械与车辆学院,北京 100081; 3.北京科技大学 机械工程学院,北京 100083)
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| 摘要: |
| 为探究液力变矩器工作轮轻量化后对其原始特性和工作部件强度的影响,基于某三元件液力变矩器样机,开发了液力变矩器三维流动轻量化平台. 采用贝塞尔曲线对变矩器工作轮叶栅系统和内外环曲面进行参数化建模,定义叶片和内外环的厚度系数. 使用实验设计方法（DOE）建立不同叶片和内外环厚度系数下各个工作轮的单流道模型,利用计算流体力学软件对单流道模型进行流场仿真,并将仿真结果用于厚度变化后的叶轮结构的单向流固耦合分析,以分析各个工作轮的厚度变化对外特性和强度的影响. 通过台架试验对轻量化后变矩器的性能进行测试,并结合仿真计算减薄后的外特性以及相应的应力和形变量变化. 结果表明:随着变矩器各部分厚度系数在1.0—0.3范围内的变化,变矩器整体的质量最多可减轻40%,变矩器可以承受结构大幅度减薄引起的应力增加,而结构减薄导致的流道和循环流量增加,会显著地提高变矩器各叶轮工作转矩. |
| 关键词: 液力变矩器 参数化 轻量化 实验设计 流固耦合 |
| DOI：10.11918/201806009 |
| 分类号:TH137.332 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51475041)；国家部委基础产品创新计划(237099000000170009),车辆传动国家级重点实验室基金(614221304040517)；北京理工大学国际科技合作专项资助(GZ2017035104) |
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| Light weight potential study of hydrodynamic torque converter based on thickness variation |
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WEI Wei 1,2,LIU Xu1,LIU Boshen1,3,YAN Qingdong1,2
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(1.State Key Laboratory of Vehicular Transmission,Beijing Institute of Technology,Beijing 100081,China; 2.School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; 3.School of Mechanic Engineering, University of Science and Technology Beijing,Beijing 100083,China)
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| Abstract: |
| To explore the influence of lightweight of hydrodynamic torque converter on its working characteristics and working parts, the hydrodynamic torque converter three-dimensional flow lightweight platform was developed based on the three components hydrodynamic torque converter prototype. By using the Bessel curve, the parameterized modeling of cascade system and the inner and outer ring surfaces was performed to define the thickness coefficients of the blades and the inner and outer rings. Design of experiment method (DOE) was used to establish each wheel with different thickness parameter of single flow channel model, and computational fluid dynamics software was used to calculate the single flow channel model for flow field simulation. The simulation results were used to analyze the unidirectional flow solid interaction calculation of wheels after thickness variation and its influence on the external characteristic and strength. The performance of lightweight torque converter was tested and the results show that with the decrease of thickness, the torque converter can withstand the stress increasing on structure, and the expandance of flow passage and circulatory flux will significantly improve the efficiency and torque values of pump and turbine wheels. |
| Key words: Torque converter Parameterized Light weight DOE FSI |
