Strukturprovning och analys av strukturdynamik

Dewesofts system för strukturdynamik kan användas för modaltestning (FRF, OMA, ODS, SIMO och MIMO), FFT-visualisering och -analys, spektralanalys, utmattningstestning, slagspektrum, sinusreduktion (COLA) och övervakning av struktur- och brotillståndet. Fullständig kompatibilitet med vibrationsbord och provning med impulshammare gör det möjligt att snabbt och enkelt fastställa naturliga resonanslägen och frekvenser. Datamaskinvara i världsklass ger ett signal-brusförhållande på över 130 dB och ett dynamiskt område på upp till 160 dB. Den prisbelönta DewesoftX-programvaran ger snabb och enkel installation och övervakning i realtid samt en mängd olika verktyg för offline-analys.

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Fallstudier

Experimental Modal Analysis of a Pedestrian Platform

This article presents the experimental modal analysis (EMA) of a pedestrian platform to understand its dynamic behaviour under various loads. The study identified key dynamic properties using sensors, accelerometers, and Dewesoft systems, including natural frequencies, vibration modes, and damping ratios. The results are crucial for improving pedestrian structures' design, stability, and safety, showcasing the potential for applying EMA techniques to real-world scenarios.

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Modal Testing and Analysis of an Aeronautical Propeller Blade

This case study examines the modal testing of an aircraft propeller blade using the Dewesoft KRYPTON system. The study identified the blade's resonance frequencies and vibration modes by capturing vibration data with accelerometers. Conducted in a controlled environment, the analysis emphasized the importance of accurate measurements in engineering, aligning with Kelvin's principle that improvement relies on the ability to measure.

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Optimizing Hydrofoil Performance Using Modal Analysis and Piezoelectric Resonant Shunt Damping

Researchers enhanced hydrofoil performance by reducing vibrations through modal analysis and piezoelectric resonant shunt damping. By tuning natural frequencies using inductors and equipping the hydrofoil with piezoelectric patches to control bending and torsion, they significantly improved its dynamic behavior, offering valuable insights for marine and aeronautical engineering advancements.

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Modal Test on Hydro Turbine Buckets

Learn how Dewesoft provided an effective field solution for quick validation of turbine modal parameters for TIWAG, a major Austrian power plant operator.

Konrad Schweiger

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Dynamic Characterization of a Two-Span Pedestrian Bridge

At Kungliga Tekniska Högskolan (KTH) in Sweden, a project with Strusoft and Dewesoft analyzed a two-span pedestrian bridge to enhance student learning. Using advanced monitoring tools like accelerometers, the project assessed the bridge's response to environmental and operational conditions, aiding in finite element model tuning and proactive maintenance. This initiative also supports the creation of an open-source bridge database for further research and education.

Rok Mesar

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