Structural Testing and Structural Dynamics Analysis

Dewesoft structural dynamics systems allow you to perform modal tests (FRF, OMA, ODS, SIMO, and MIMO), FFT display and analysis, spectrum analysis, fatigue tests, shock response spectrum, sine reduction (COLA), and structural and bridge health monitoring. Full support of shaker tables and impulse hammer work allows fast and easy mode and natural resonant frequency characterization. Top-notch DAQ hardware provides a signal-to-noise ratio better than 130 dB, and a dynamic range up to 160 dB. Award-winning DewesoftX software makes setup and real-time monitoring fast and easy, and provides a wealth of offline analysis tools.

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Modal Testing and Modal Analysis​​​​​​​

Structural dynamics testing and analysis solution

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Application Notes

Noise Floor Analysis: Signal Measurement Chain Quality in Civil Engineering

The measurement signal chain has to be well-composed and accurately dimensioned to optimize signal-to-noise ratio. Read the application note to learn how.

Gabriele Ribichini

Case Studies

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.

Case Studies

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.

Case Studies

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.

Case Studies

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

Case Studies

Calculating the Pulling Strength of Chains and Tie Rods in a Heritage Building

Engineering Controls Srl analyzed the pulling strength of tie rods in Casa Desanti-Bossi, a historic neoclassical building in Novara, using Dewesoft technology. Over time, structural deterioration threatened its stability, prompting a detailed assessment through static and modal analysis. By measuring resonance frequencies, engineers evaluated stress levels and identified potential risks. Their findings support maintenance and reinforcement efforts, ensuring safety and preserving the building’s architectural heritage.

Emanuele Burgognoni

Case Studies

Aircraft Wing Payload Modification

Learn how an aircraft operating company in Turkey wanted to modify the wing payloads without drastically affecting the flight envelope.

Carsten Frederiksen

Case Studies

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

Case Studies

Structural Verification for Vibration Mitigation in Anti-Surge Valves

Vibro Technology conducted structural verification on the anti-surge valve for a Peruvian plant, using Dewesoft tools to analyze and mitigate vibrations. Their solution, combining shock absorbers and springs, optimized vibration control, improved structural support, and boosted operational reliability, enhancing the plant's safety and efficiency.

Case Studies

Experimental Modal Analysis on Robotic Martian Rover’s Wheel

The DIANA team from the Polytechnic University of Turin partnered with Dewesoft to conduct an Experimental Modal Analysis (EMA) on the airless wheels of their Martian rover, ARDITO. This analysis aimed to ensure the wheels' durability by studying their natural frequencies to prevent stress and vibrations. The findings help enhance the rover’s performance on challenging Martian terrain, supporting future planetary missions.

Case Studies

Validation of Structural Model Parameters of a Sailing Boat

This article details the validation of a sailing boat's finite element analysis (FEA) model using strain gauge measurements. The team optimized sustainable basalt fiber composites for boat components, balancing strength and weight. They designed and tested a critical crossbar using both experimental and numerical methods to ensure reliability, highlighting the integration of material testing, analysis, and real-world data to enhance boat performance and sustainability.

Case Studies

Seismic Safety Assessment of a Hospital Building

This article showcases the success of combining computer simulations with real-world data for earthquake resilience assessments. Accurate modelling aligned with OMA confirms the reliability of seismic predictions. It stresses the importance of comprehensive evaluations, blending theory and practice, to guarantee structural safety during earthquakes.

Application Notes

Two-plane Balancing on a Harvester Rotor

Maintaining rotor balance is vital for smooth operation, preventing severe vibrations, extending machine lifespans, and averting fatigue and material problems often tied to rotational frequency. This app note describes measuring the vibrations at the bearing points on the forage harvester to perform on-site balancing.

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