Vaclav O.

I am a vibration and FEA expert with 10 years of professional experience. I hold a PhD in Structural Dynamics and I am a Chartered Mechanical Engineer (CEng MIMechE). I diagnose vibration issues, validate structures with FEA, and optimise mechanical designs for strength, durability, and reliability using advanced engineering simulations.

I deliver clear reports, data-driven insights, and practical recommendations, giving you the confidence to make safe and efficient engineering decisions.

⚙ Vibration Engineering & Dynamic Analysis ⚙
✔ Vibration troubleshooting & resonance control: resonance mapping, mode tuning, root-cause diagnostics
✔ Modal analysis, EMA/OMA & testing: damping estimation, mode-shape interpretation, shaker campaigns, sine/random vibration, shock testing
✔ Signal processing & data interpretation: accelerometer-based insights, FFT, waterfalls, envelope methods, feature extraction, spectral analysis, DAQ and test-setup planning
✔ Python for vibration analysis: automated diagnostic pipelines and ML-based anomaly detection
✔ R&D support and development of clients’ in‑house vibration analysis capability
✔ Design optimisation for vibration performance: stiffness tuning, mass distribution, damping and dynamic response refinement

⚙ FEA: Static, Transient & Fatigue Analysis ⚙
✔ FEA for structural integrity: strength, stiffness, stability, and deformation under realistic loading
✔ Transient FEA: impacts, shocks, rapid load changes, and start-up/shutdown events
✔ Non-linear FEA: contact, plasticity, material nonlinearity, and large-deformation behaviour for complex structures
✔ Fatigue & durability prediction: stress-life and strain-life methods to reduce failure risk and extend service life
✔ Design optimisation: eliminate hotspots, improve stiffness, and increase overall reliability
✔ Salome_Meca, Code_Aster and Paraview user

⚙ Rotordynamics & High-Speed Machinery FEA ⚙
✔ Critical-speed and stability assessment for pumps, compressors, turbines, and other rotating machinery
✔ System-level rotordynamics evaluation: Campbell/Bode analysis and run-up / coast-down behaviour for multi-stage rotors, pump trains, and rotor-bearing systems
✔ FEA for rotating components: blades, impellers, rotors, couplings, and high-speed assemblies assessed for stiffness and deformation control
✔ FEA for static components: casings, housings, pump volutes, bearing pedestals, and structural frames analysed for load transfer, thermal effects, and long-term reliability
✔ Design refinement for rotating machinery: mass-stiffness balancing, blade/impeller geometry tuning, and structural improvements that enhance performance and reduce maintenance issues

⚙ CFD (Computational Fluid Dynamics) ⚙
✔ Flow performance analysis: pressure, velocity, and flow-distribution insights for ducts, manifolds, nozzles, and mechanical systems
✔ CFD for pumps & turbomachinery: impeller/volute flow behaviour, hydraulic efficiency, cavitation risk, and blade-passage optimisation
✔ Pressure-drop & flow-resistance evaluation: system-level assessments to reduce losses and improve efficiency in pipework and mechanical assemblies
✔ Design improvements from CFD results: geometry adjustments, smoother flow paths, reduced recirculation, and enhanced performance
✔ OpenFOAM user

⚙ CAD / Mechanical Design Modifications ⚙
✔ Structural refinement & geometry optimisation: ribbing, filleting, thickness tuning, load-path improvements, and mass redistribution to eliminate stress hotspots
✔ CAD updates: translating engineering recommendations directly into updated CAD models

⚙ What I Bring to Your Project ⚙
✔ Highest engineering standards – I adhere to recognised engineering codes of ethics and avoid pirated software, half-ready solutions, or any practices that could compromise your project.
✔ Clear communication & responsiveness – fast replies, transparent progress updates, and clear explanations of technical topics.
✔ Actionable outputs & implementation support – practical recommendations you can apply immediately, plus guidance during and after the project.
✔ Reliable delivery – on time, within budget, and to the agreed technical quality.

⚙ Typical Deliverables ⚙
✔ Action-oriented engineering reports – clear conclusions, safety margins, and practical recommendations (typically 5–12 pages, concise and decision-ready).
✔ Vibration & rotordynamics outputs – Bode/Campbell diagrams, frequency spectra, waterfall plots, and ODS/modal shapes with safe-operating ranges and tuning advice.
Typical outcome: vibration reductions of 40–70% in problematic speed bands after design, support, or balance adjustments.
✔ FEA results & design changes – stress/fatigue plots, modal frequencies, safety-factor maps, stiffness checks, and targeted geometry up

➡️ Get in touch if you’d like an initial review of your vibration or FEA challenge — we can discuss the best approach by chat or jump on a short intro call ➡️