Journal of the Chinese Society of Mechanical Engineers

CSME 2025/2
Volume 46 No.1 : 51-61

Comprehensive Modal Analysis, Experimental Validation, and Topology Optimization of High-Precision Surface Grinding Machine

Yi-Cheng Ye ^a, Shinn-Liang Chang ^b, Tzu-Chi Chan ^c and Keng-Chang Chang ^d
^aGraduate student, Department of Power Mechanical Engineering, National Formosa University, Yunlin, Taiwan 632301, ROC.
^bProfessor,Department of Power Mechanical Engineering, National Formosa University, Yunlin, Taiwan 632301, ROC.
^cAssociate Professor, Department of Mechanical and Computeraided Engineering, National Formosa University, Yunlin Taiwan ,632301, ROC
^dPresident, EQUIPTOP, Taichung, Taiwan, 421016, ROC.

Abstract: This study focuses on the dynamic characteristics of a high-precision surface grinding machine.
Modal analysis using Finite Element Analysis (FEA)
was employed to determine the fundamental frequencies of the structure. An Experimental Modal Analysis
(EMA) was conducted to validate the vibration characteristics and prevent resonance. Modal analysis confirms primary and secondary natural frequencies of
68.2 and 134.3 Hz, respectively, with a discrepancy of
<10% compared to experimental results. The topology
optimization of the critical components increased the
primary and secondary natural frequencies by 3.7%
and 5.3%, respectively, raising the corresponding values to 70.8 and 141.8 Hz. This optimization effectively
reduced the risk of resonance in the 60–70 Hz range.

Keywords: experimental modal analysis, natural frequency, surface grinding machine, topology optimization.

*Corresponding author; e-mail:

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