为探讨高频振动筛主要技术参数之间的关系,对其进行数值模拟分析。通过对静力、模态、谐响应分析,依次得出如下结论：橡胶弹簧的泊松比0.47;弹性模量对各阶阵型影响较小;激振力不变,随着激振频率的增加,振幅逐渐趋于稳定,频率与最大、最小Von Mises几乎呈线性增加趋势,频率变化对脱水效率影响较小;偏心质量恒定,随着激振频率的增加,振幅逐渐减小,并趋于稳定,而最大Von Mises应力呈线性快速增加的趋势;频率恒定,激振力与振幅、最大VonMises应力呈线性增加均匀分布特点,最优工作频率为24 Hz,最优激振力为60～68 kN。该研究为高频振动筛的设计改进及动态强度试验提供了理论依据。%In order to discuss the relationship between the main technical parameters of the high frequency vibration screen, a numerical simulation analysis was conducted. With the static, mode and harmonic response analysis individually, the following conclusion was ob- tained. The poisson's ratio of the rubber spring was 0. 47 and the elastic modulus had a less influences to each stage matrix. When the ex- citation force unchanged, the amplitude would steadily be stable with the excitation frequency increased. The frequency would be in- creased in liner with the max and rain Von Mises and the frequency variation would have less influence to the dewatering efficiency. The eccentric quality would be constant, with the excitation frequency increased, the amplitude would steadily reduced and then be stable and the max Von Mises stress would be in a rapid increased tendency in liner. When the frequency was constant, the max Van Mises stress of the excitation force and amplitude would be increased in linear and have even distribution features. The optimum working frequency was 24 Hz and the optimum excitation force was 60 -68 kN. The study proved the theoretical basis to the design improvement and dynamic strength test of the high frequency vibration screen.
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