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<p>The double-deck vibrating flip-flow screen (DDVFFS) addresses the limitation of traditional single-deck vibrating flip-flow screen, which cannot perform multi-granularity screening. The nonlinear acting forces generated by the spring and the particle material significantly influence the dynamic characteristics of the DDVFFS. Since the linear dynamic model cannot accurately predict the actual motion response of the DDVFFS, discrepancies arise between the designed and actual amplitudes. To solve this issue, this paper investigates the nonlinear dynamic characteristics of both the rubber spring and the particle material motion. A dynamic model of the DDVFFS, incorporating the nonlinear forces of the rubber spring and particle material, is developed. The primary resonance response of the model is determined using the harmonic balance method. The results show that the amplitude of the main screen frame is 3.76&#xa0;mm, the amplitude of the upper floating screen frame is 5.91&#xa0;mm, and the amplitude of the lower floating screen frame is 6.41&#xa0;mm. Additionally, the impact of key nonlinear parameters on the dynamic characteristics of the DDVFFS is analyzed, revealing the nonlinear dynamic behavior of the system under various operating conditions. The findings provide valuable theoretical insights for the design of DDVFFS.</p>

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Study on nonlinear dynamic characteristics of DDVFFS considering the action of spring and particle material

  • 期刊论文

  • 发表日期：

    2026年1月7日

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  • Sai Li,
  • Lala Zhao,
  • Chenlong Duan,
  • Haishen Jiang,
  • Chenhao Guo,
  • Guoshuai Fan,
  • Yadong Yang,
  • Zeping Liu

摘要

The double-deck vibrating flip-flow screen (DDVFFS) addresses the limitation of traditional single-deck vibrating flip-flow screen, which cannot perform multi-granularity screening. The nonlinear acting forces generated by the spring and the particle material significantly influence the dynamic characteristics of the DDVFFS. Since the linear dynamic model cannot accurately predict the actual motion response of the DDVFFS, discrepancies arise between the designed and actual amplitudes. To solve this issue, this paper investigates the nonlinear dynamic characteristics of both the rubber spring and the particle material motion. A dynamic model of the DDVFFS, incorporating the nonlinear forces of the rubber spring and particle material, is developed. The primary resonance response of the model is determined using the harmonic balance method. The results show that the amplitude of the main screen frame is 3.76 mm, the amplitude of the upper floating screen frame is 5.91 mm, and the amplitude of the lower floating screen frame is 6.41 mm. Additionally, the impact of key nonlinear parameters on the dynamic characteristics of the DDVFFS is analyzed, revealing the nonlinear dynamic behavior of the system under various operating conditions. The findings provide valuable theoretical insights for the design of DDVFFS.