How to model a piston with a retracting spring at one end and having single hydraulic port??

Question

immanuelkeba 2024-12-30，11:43

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2172560-how-to-model-a-piston-with-a-retracting-spring-at-one-end-and-having-single-hydraulic-port

回答： Yifeng Tang 2025-1-11，1:37

The spring is to exert some force on the fluid inside the cyinder, thus pressurizing it. I want to find out the response rate (outlet flowrate) of the fluid when pushed out by the spring with different stiffness rates? Can anyone help? How to model this block in SimHydraulics?

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Animesh 2024-12-30，12:29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2172560-how-to-model-a-piston-with-a-retracting-spring-at-one-end-and-having-single-hydraulic-port#answer_1556665

Hi @immanuelkeba,

To model a spring-pressurized hydraulic cylinder in SimHydraulics and analyze the outlet flow rate for different spring stiffness values, you can follow these steps:

Use the "Double-Acting Hydraulic Cylinder" block to represent the cylinder.
Add a "Translational Spring" block to simulate the spring applying force to the piston. Connect this block to the mechanical translational port of the hydraulic cylinder.
Include a "Hydraulic Fluid" block to define the properties of the fluid in the system.
Use a "Fixed Orifice" block to model the outlet through which the fluid exits.
Place a "Flow Rate Sensor" in the outlet line to monitor the flow rate of the fluid being expelled from the cylinder.

Once the setup is complete, you can run simulations with different spring stiffness values to observe how the outlet flow rate changes.

Additionally, you might find this video tutorial helpful for a practical demonstration of modeling a hydraulic actuation system:

https://www.youtube.com/watch?v=9LUuI9EIuAM

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

immanuelkeba 2025-1-8，11:52

Hi Animesh,

Thanks for your answer. Tried doing your inputs with some additional blocks. I am getting some errors on it. Could please check and let me know where have I gone wrong?