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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F-MA Consulting Co., Ltd., commonly known as F-MAC, is a company based in Kyoto City that provides consulting services related to vibration and noise technology. The name is primarily derived from Newton's second law, F=MA. It also reflects the initials of the founder and the promotion of modal analysis. We accept inquiries regarding general engineering analysis, focusing on vibration and noise.