boek
Mechanical
- Apr 11, 2022
- 11
I am trying to estimate the stiffness from the oil inside a hydraulic system. For a simple piston it is possible to estimate the stiffness using two springs, which gives a total stiffness for the oil as: koil=E1A12/V1+E2A22/V2, where E is the bulk modulus of the oil, A the piston area and V the volume of the oil, see the figure below.
However, I have a different system which could be simplified according to the figure below. I need to estimate the stiffness of the oil for this system. Since there is no relative volume change in V1, my idea is to neglect the stiffness contribution in the this region, such that: koil=E2A22/V2.
Is this reasonable?

However, I have a different system which could be simplified according to the figure below. I need to estimate the stiffness of the oil for this system. Since there is no relative volume change in V1, my idea is to neglect the stiffness contribution in the this region, such that: koil=E2A22/V2.
Is this reasonable?
