Prof. Dr.-Ing. Gerald Sitzmann
Laboratory for Machine Dynamics and Structural Integrity (C022)
Laboratory for machine dynamics/ fatigue (C022)
The Laboratory for Machine Dynamics and Fatigue Strength is one of the main laboratories of the Technische Hochschule Ingolstadt and serves not only for the practice-oriented education of students but also for application-oriented research in cooperation with industry.
Goals and idea
Vibrations play the central role with regard to the service life of components or their structural behaviour. The following focal points are to be mentioned:
- Training of students in the field of mechanical and automotive engineering, both in basic subjects such as dynamics and in special disciplines such as test engineering and fatigue strength
- Experimental and computational determination of service life (determination of component stress, fatigue strength tests / fracture mechanics)
- Investigation of the vibration behaviour (operational vibration analysis, modal analysis, mobile measurement data acquisition)
- Simulation of dynamic systems
- Component optimizations
- Verification of calculation/simulation models
- Construction of test facilities up to the road simulator
Laboratory equipment and activities
Equipment and function
The existing equipment is operated in cooperation with the neighbouring laboratory "Lightweight Design and Car Body Technology" C021.
Servo-hydraulic testing equipment:
- Hydropulse linear cylinder (from 7 to 630kN)
- Hydropulse rotating cylinder (2 kNm, +- 50°)
- Regulation and control unit (multi-channel)
- Load portal and various load frames
- Hydraulic supply units
- Sprung foundation, crane system
High speed tensile testing machine:
- Load frame with hydraulic cylinder (40kN, 20m/s)
- Regulation and control unit
- High-speed camera
Electrodynamic shakers:
- Shakers (from 9N/18kHz to 6kN/3kHz)
- Regulation and control unit
- Modal analysis system
Servopneumatic testing device:
- Servopneumatic test cylinders (0.8 to 5 kN)
- Regulation and control unit
Electric rotary actuator:
- Speed controlled asynchronous motor with cyclo gear incl. speed and torque measurement
- Performance data: 11 kW, 2410 Nm, 73 rpm
Measuring equipment:
- Strain gauge measurement technology (strain gauge and bridge amplifier) for strain measurement
- Sensors and measuring amplifiers for measuring forces, torques, pressures, displacements, speeds and accelerations
- Optical 3D measuring system
- High-speed camera
- Telemetry system (1 channel)
- Laser Vibrometer
- Mobile measurement data acquisition systems
Software
- DiaDEM, Catman, TestLab, TestXpress, ...(acquisition and analysis of measurement data in time, frequency and frequency domain)
- Modulogic Studio, RSBas Test(Test Program Generation)
- RS LabSite TWR(Tracking tests, simulator)
- TestLab(structural investigations / modal analysis)
- PONTOS, TRITOP (optical 3D measurement of object coordinates, movements and vibrations)
- ARAMIS (together with the laboratory "Materials Engineering") (optical 3D deformation analysis)
- SimulationX, Matlab/Simulink (simulation of vibration processes)
Courses
Practical trainings accompanying the lectures:
- Engineering Mechanics (Dynamics)
- Machine Dynamics
- Introduction of testing technology and fatigue strength
- Testing Technology
- Dynamics and vibration engineering
- Practical training motorcycle
- Lightweight construction
- Engineering training
Other activities:
- Study projects
- Theses (Bachelor & Master)
- Industrial Projects
- Special events: e.g. university information days, Girls Day, Technology Day, school classes
Research
- Dynamic tensile tests
- Determination of a strain rate-dependent material behaviour
- Testing concepts for ceramic brake discs (dynamic pressure tests, durability tests)
- Vibroacoustic investigations of metal cushion dampers
- Test concepts for a planetary gear series (design, construction and commissioning of the test equipment)
- Modal analytical investigations on a pump unit
- Investigation of screw connections
- Determination of dynamic characteristic values for various components/machines:
- Acceleration measurement on hydraulic hammers
- Evaluation of damping systems
- drop tests with supercaps (capacitors)
- Investigation of the vibration loading capacity of voltage transformers
- Stiffness tests on generator coils
- Determination of the housing stiffness of robot gearboxes
- Determination of dynamic characteristic values of wire rope springs
Laboratory management and team
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Prof. Dr.-Ing. Prof. h.c. Jörg Kessler
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Prof. Dr.-Ing. Jörg Bienert
Vice dean of the Faculty of Mechanical Engineering
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Prof. Dr.-Ing. Manuela Waltz
Deputy Women's Representative, Programme director and Academic advisor Automotive Engineering
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Prof. Dr.-Ing. Thomas Binder
Programme director and Academic advisor Mechanical Engineering (Bachelor)
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Prof. Dr.-Ing. Ludwig König
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Prof. Dr.-Ing. Christian Krä
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Prof. Dr.-Ing. Ulrich Tetzlaff
Programme director and Academic advisor Material Science in Engineering (Master)
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Prof. Dr.-Ing. Uli Burger
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Prof. Dr.-Ing. Rudolf Dallner
Deputy Women's Representative of the Faculty of Mechanical Engineering
