Stability of pressure relief valves
Research objective
Model structure of a pressure relief valve
A pressure relief valve is a self-adjusting cross-domain system. The system behavior is characterizes by complex interactions between the function determining subsystems.
Further developments of this hydraulic component are sophisticated and have to consider robustness, functionality, energy efficiency and the need for error analysis.
A holistic simulation approach including all relevant physical effects can correctly preestimate the system behavior. This method can support and improve the development process of hydraulic valves.
Approach
Stability investigations for different configurations of a pressure relief valve
Predicting basis of the system behavior is a nonlinear system model with lumped parameter. The characteristic curves and diagrams relating to magnetic and flow-mechanical are obtained using modern CFD and FEM calculation tools. With this model, it is possible to investigate and optimize the static and dynamic system behavior by means of parameter variation. Through the example of a pressure relief valve it is possible to virtually find the desired static system behavior with sufficient stability and system damping.
The presented research activities are part of a cooperation with the company Bosch Rexroth AG. The authors would like to thank this company for the funding and support.