Design Method of the Stroke Ring Based on Deformation Pre-Compensation
Abstract
:1. Introduction
2. Simulation Model
2.1. Force Analysis
2.2. Transient Dynamic Model
2.3. Hydraulic Model
3. Influence of Elastic Deformation
3.1. Deformation Analysis
3.2. Deformation Test Verification
3.3. Influence of Deformation on Motor Output Characteristics
4. Numerical Analyses Based on Deformation Compensation Optimization
4.1. Compensation Method
4.2. Result Verification
5. Conclusions
- A finite element simulation model was established to calculate the elastic deformation value of the stroke ring curve, which was verified using tests;
- The elastic deformation of the stroke ring curve has a significant effect on the output torque of the motor. Under the condition of 35 MPa, the pulsation rate of the uncompensated working curve is 3.902% higher than that of the ideal design curve;
- An effective deformation compensation optimization method was proposed. The results show that the pulsation rate of the deformation-compensated working curve was significantly reduced compared with the uncompensated working curve, and the reduction rate of torque pulsation reached 79.12% under 35 MPa working conditions;
- The research contents of this paper can provide reference for structural optimization and performance improvement of multiple-stroke piston motor used in military, marine, and engineering machinery and other occasions with high requirements for impact and noise;
- In the future, based on this research, factors such as oil film thickness and fatigue stress can be considered to better optimize the service life and performance of the multiple-stroke piston motor.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Name | Material | Density/kg (m3)−1 | Young’s Modulus/MPa | Poisson’s Ratio | Yield Strength/MPa |
---|---|---|---|---|---|
Piston | 38CrMoAl | 7870 | 213,000 | 0.286 | 835 |
Roller | GCr15 | 7810 | 208,000 | 0.3 | 750 |
Bearing bush | PEEK | 1320 | 3200 | 0.41 | 97 |
Stroke ring | 42CrMo | 7850 | 212,000 | 0.28 | 930 |
Rotor | QT700 | 7300 | 145,000 | 0.3 | 420 |
Constraint Type | Component 1 | Component 2 |
---|---|---|
Fixed support | Stroke ring | Ground |
Bearing bush | Piston | |
Revolute support | Rotor | Ground |
Roller | Bearing bush | |
Translation support | Piston | Rotor |
Contact | Stroke ring | Roller |
Experimental Force (kN) | Displacement (μm) | Deformation (mm) | |
---|---|---|---|
Error | ±0.2% | ±0.5% | ±0.5% |
Resolution ratio | 0.002 | 0.04 | 0.002 |
Measurement range | 0.4–100 | \ | \ |
Location/° | Cylinder Diameter/mm | Roller Diameter/mm | Simulation Deformation Value/μm | Test Deformation Value/μm | Error/% |
---|---|---|---|---|---|
0 | 99.47 | 40 | 31.51 | 32.8 | 4.09 |
7 | 249.78 | 40 | 31.47 | 32.7 | 3.91 |
15 | 250.22 | 40 | 43.25 | 45.2 | 4.51 |
20 | 126.22 | 40 | 29.14 | 30.2 | 3.64 |
25 | 86.31 | 40 | 24.18 | 25.1 | 3.81 |
30 | 74.99 | 40 | 23.25 | 24.7 | 6.24 |
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An, G.; Gao, K.; Dong, H.; Liu, B.; Li, L.; Hu, Z. Design Method of the Stroke Ring Based on Deformation Pre-Compensation. Actuators 2024, 13, 22. https://doi.org/10.3390/act13010022
An G, Gao K, Dong H, Liu B, Li L, Hu Z. Design Method of the Stroke Ring Based on Deformation Pre-Compensation. Actuators. 2024; 13(1):22. https://doi.org/10.3390/act13010022
Chicago/Turabian StyleAn, Gaocheng, Kai Gao, Hongquan Dong, Baoyu Liu, Lin Li, and Zhenhua Hu. 2024. "Design Method of the Stroke Ring Based on Deformation Pre-Compensation" Actuators 13, no. 1: 22. https://doi.org/10.3390/act13010022
APA StyleAn, G., Gao, K., Dong, H., Liu, B., Li, L., & Hu, Z. (2024). Design Method of the Stroke Ring Based on Deformation Pre-Compensation. Actuators, 13(1), 22. https://doi.org/10.3390/act13010022