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<p>The natural frequencies of tomatoes needed to be accurately determined to mitigate vibration-induced damage during transportation. In this study, a finite element model was developed based on their geometric dimensions and mechanical parameters of tomatoes. Modal analysis was performed using ANSYS simulation software, which revealed that the first- and second-order resonance frequencies ranged from 54.491 to 55.354&#xa0;Hz and from 69.546 to 70.963&#xa0;Hz, respectively. Repeated sinusoidal frequency sweep tests were performed in a controlled environment at 20&#xa0;°C and 50% relative humidity using a vibration testing system, facilitating the acquisition of the acceleration transfer rate curve. The sinusoidal sweep tests were repeated five times (<i>n</i> = 5) to account, the first- and second-order natural frequencies were identified as 53.2 ± 1.3&#xa0;Hz and 73.4 ± 2.0&#xa0;Hz (mean ± standard deviation), respectively. The 95% confidence intervals for the first and second natural frequencies were [52.1, 54.3] Hz and [71.6, 75.2] Hz, respectively. Strong agreement was observed between the experimental and simulation results, with relative errors below 5.5%, thereby validating the finite element model. The findings defined a frequency range to be avoided during tomato transportation and provided a theoretical basis for vibration mitigation and packaging design to reduce transport-related losses.</p>

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Modal analysis and frequency sweep test of tomato based on finite element method

  • 期刊论文

  • 发表日期：

    2025年10月24日

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  • Hengzhi Wang,
  • Fang Wang,
  • Jinyi Deng,
  • Shibo Ma,
  • Mingsi Wang

摘要

The natural frequencies of tomatoes needed to be accurately determined to mitigate vibration-induced damage during transportation. In this study, a finite element model was developed based on their geometric dimensions and mechanical parameters of tomatoes. Modal analysis was performed using ANSYS simulation software, which revealed that the first- and second-order resonance frequencies ranged from 54.491 to 55.354 Hz and from 69.546 to 70.963 Hz, respectively. Repeated sinusoidal frequency sweep tests were performed in a controlled environment at 20 °C and 50% relative humidity using a vibration testing system, facilitating the acquisition of the acceleration transfer rate curve. The sinusoidal sweep tests were repeated five times (n = 5) to account, the first- and second-order natural frequencies were identified as 53.2 ± 1.3 Hz and 73.4 ± 2.0 Hz (mean ± standard deviation), respectively. The 95% confidence intervals for the first and second natural frequencies were [52.1, 54.3] Hz and [71.6, 75.2] Hz, respectively. Strong agreement was observed between the experimental and simulation results, with relative errors below 5.5%, thereby validating the finite element model. The findings defined a frequency range to be avoided during tomato transportation and provided a theoretical basis for vibration mitigation and packaging design to reduce transport-related losses.