Purpose&#xa0; <p>The study aimed at enhancing the productivity and product quality of Enset (Ensete ventricosum) processing, i.e., Kocho production, by investigating how the vibration behavior at the machine interface affects performance. It took into account the interaction between the concave breastplate and cylinder drum of Enset processing machines with the aim of establishing structural design improvements that minimize vibration, prolong the life of machines, and ensure consistency in fiber quality.</p> Methods <p>A simulation-based structural analysis was performed using ANSYS Workbench 2024 R1. The finite element method (FEM) was employed in the harmonic response, modal frequency, and static deformation analysis of the main machine elements. This facilitated the determination of weakness, vibration mode prediction, as well as virtual testing of the probable design modifications.</p> Results <p>Vibration analysis revealed the major natural frequencies of the cylinder drum and concave breastplate during operation. The lower modes represented global bending effects. Higher modes with close spacing indicated potential modal coupling and structural instability. For stable operation and improved fiber quality, both components must be operated at well-adjusted frequencies of 3.65 Hz, 15.478 Hz, 25.78 Hz, 34.2 Hz, 38.4 Hz, and 40.2 Hz with vibration amplitudes of 0.01164, 0.02461, 0.00915, 0.1116, 0.0707, and 0.541, respectively. These values are used to tune the machine parts for reduced vibration and wear.</p> Conclusion <p>The study revealed that vibration control at the concave breastplate cylinder drum interface is paramount for reliable Enset decortication. Through proper design optimization guided by finite element simulation vibration can be reduced significantly, premature machine failure prevented, and consistency of products enhanced. The findings constitute a foundation for structural improvement to enhance machining efficiency and guarantee high-quality Kocho production in Ethiopia.</p>