DynaVal - Dynamically Adaptive Impedance Elements for Vibration Control in Validation Environments

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When validating technical systems in dynamic tests, the coupling of the technical system to the test environment can influence the test results. This influence is relevant in different dynamic systems. One possible objective is to positively influence the dynamic behavior of vibrationally loaded systems by means of adjusted interface properties, so that, for example, critical vibration amplitude increases can be reduced or completely avoided. In the field of realistic testing, it is necessary to simulate the interface properties of the real environment to obtain a meaningful behavior of the test object. The proposed project focuses on the investigation of dynamically adaptive impedance elements. These serve as interface elements in test engineering to be able to reproduce time varying mechanical boundary conditions. The applicability and transferability in the very different areas of power tool and aircraft cabin validation will be determined as an example. In the area of power tools, dynamically adaptive impedance elements can be used as a substitute model to represent the human-machine interaction. This interaction is transient in time and therefore requires an adaptability of the substitute model to be able to represent different operating conditions. With dynamically adaptive impedance elements, it is possible in the field of aircraft cabin element investigation to accelerate the test activities by multi-stationary representation of different connection properties of the test object to the test bench and to enable large experimental parameter studies. Research into dynamically adaptive impedance elements involves first identifying the requirements in dynamic testing of systems. Through a systematic development of adaptive stiffness and damping elements and their combination to dynamically adaptive impedance elements, it will be possible to represent the determined operating states and operating state transitions in testing. In a methodical approach with the help of a selection catalog and accompanying guidelines, transferability will be ensured to support further research in this field.