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Thermal Modeling and Measurement of an Excavator Hydraulic System
Site:
Purdue University, Maha Fluid Power Research Center
Advisor:
Monika Ivantysynova
Graduate Mentor:
Josh Zimmerman
Preferred major(s):
ME, ABE
Desired experience: Course in Heat Transfer, Matlab/Simulink
Students desired:
1
This project complements CCEFP Project 1A2, which focuses on the development of energy efficient
pump-controlled hydraulic systems and controls for mobile hydraulic machines. A new energy-saving
hydraulic system for a 5-ton excavator has already been designed and modeled, and a prototype has
been built. A detailed dynamic and hydraulic co-simulation model of the machine has previously been
created and the undergraduate researcher will use energy and power results from this model to create a
model capable of predicting temperatures of the hydraulic oil in the excavator system. The researcher
will then be responsible for setting up and taking temperature measurements during machine operation
and comparing these measurements with simulated results. The end goal of the study is to determine
how much the cooling power of the excavator can be reduced due to the more efficient actuation
technology which has been implemented. This project is well suited to an undergraduate student
interested in heat transfer, system design and simulation, and/or fluid power systems. Completion of a
course in heat transfer is required. Previous experience with Matlab/Simulink and fluid power is
desired, but not required.
More information at https://engineering.purdue.edu/Maha/
Simulation Study on the Impact of Novel Material Properties and Advanced
Surface Geometry on the Behavior of Piston/Cylinder Interface Lubricating Gap
of Axial Piston Machines
Site:
Purdue University, Maha Fluid Power Research Center
Advisor:
Monika Ivantysynova
Graduate Mentor:
Matteo Pelosi
Preferred major(s):
ME, ABE
Desired experience: None
Students desired:
1
The aim of this project is to investigate the fluid film conditions and the energy dissipation in the
piston/cylinder lubricating gap of axial piston type hydraulic pumps and motors, under thermoelastohydrodynamic lubrication conditions, considering novel material pairs and advanced surface
shaping. The piston/cylinder interface represents a purely hydrodynamic bearing fulfilling
simultaneously a bearing and sealing function under complex oscillating load conditions. The
undergraduate researcher will use a fully coupled thermal and fluid-structure simulation model to study
and analyze the various physical phenomena simultaneously taking place in the lubricating interface. A
detailed investigation will be conducted to compare the numerical results with measured data of
different piston/cylinder interface material pairs. Besides, the study will consider novel gap surface
designs for axial machines piston/cylinder interface in terms of new shapes and materials. The results of
this study will need to be documented in a project report. This project is part of CCEFP project 1B1,
where new concepts for surface design for piston pumps and motors are under investigation to
drastically improve efficiency of current pumps and motors. This project is well suited to an
undergraduate student interested in design and simulation and/or fluid power systems.
More information at https://engineering.purdue.edu/Maha/
Simulation and measurement of quiet hydrostatic transmissions
Site:
Purdue University, Maha Fluid Power Research Center
Professor:
Monika Ivantysynova
Graduate Mentors:
Richard Klop
Preferred major(s):
ME, acoustical engineering
Desired experience:
Students desired:
1
Keywords
Noise control engineering, Room acoustics, hydrostatic transmission, CAD
The objective of the project is to measure sound intensity to estimate total sound power radiation of a
hydrostatic transmission (hydraulic pump and motor) inside a semi-anechoic chamber and to perform a
simulation investigation to discover quiet hydrostatic transmission designs. The project is estimated to
last 11 weeks. The student will be responsible for applying noise control engineering and room
acoustics analysis; this involves setting up sound intensity sensors, measuring acoustical material
performance of the chamber, and deriving sound power based on measurements. Furthermore, the
student would perform a systematic study using a pre-developed simulation tool to investigate unique
designs for minimal noise emissions. This work is a part of a larger research effort to develop novel
noise source reduction techniques for hydrostatic pumps and motors.
More information at https://engineering.purdue.edu/Maha/