Practical Modal Analysis for Automobiles

We are publishing information about OMA (Operational Modal Analysis) and EMA (Experimental Modal Analysis)!

This document reports on cases of OMA (Operational Modal Analysis) using multi-point simultaneous measurements on SUV test vehicles, followed by cases of OMA and EMA (Experimental Modal Analysis) using multi-point non-simultaneous measurements on convertible car test vehicles. As a practical modal analysis for automobiles using a relatively small-scale system, OMA proposes a method to determine natural frequencies and damping ratios using SSI (Stochastic Subspace Identification), and to obtain mode shapes using ODS (Operational Deflection Shape). Additionally, EMA proposes a combination of sinusoidal excitation using a small electromagnetic shaker and the least squares complex frequency method. 【Contents】 ■ Preface ■ OMA (Operational Modal Analysis) ■ EMA (Experimental Modal Analysis) ■ Discussion ■ Conclusion *For more details, please refer to the PDF document or feel free to contact us.

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