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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Theoretical Analysis on Vibration Characteristics of a Kind of Scissors Linkage Seat
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Theoretical Analysis on Vibration Characteristics of a Kind of Scissors Linkage Seat

机译：一类剪刀连杆座振动特性的理论分析

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摘要

To study the vibration characteristics of a kind of scissors linkage seat the differential equation was established and the theoretical computation formulations of its natural frequency, damping factor and dynamic amplification factor were derived. According to the formulations the effects of the system and main parameters on the vibration characteristics were analyzed. And by taking the HY-Z04 type scissors linkage seat as an example its natural frequency, damping factor and dynamic amplification were computed and analyzed and the effects of the equivalent sprung mass m on them were discussed. Study results show that the seat vibration system can be approximately treated as a linear system; the natural frequency and the damping factor are both the function of the spring stiffness, the geometry parameters of the scissor linkage and the equivalent sprung mass m. Computation and analysis for the HY-Z04 type scissors linkage seat indicate that its natural frequency and damping factor decrease with the mass m increasing; the damping factor is so high that the seat vibration attenuation capability decreases in the vibration-isolating zone; and the equivalent sprung mass m has an obvious effect on the dynamic amplification factor: with m increasing the dynamic amplification factor increases in vibration-enlarging zone and decreases in vibration-isolating zone.
机译：为了研究一种剪式联动座的振动特性，建立了微分方程，推导了其固有频率，阻尼系数和动态放大系数的理论计算公式。根据公式，分析了系统和主要参数对振动特性的影响。并以HY-Z04型剪刀连杆座为例，计算分析了其固有频率，阻尼系数和动态放大率，并讨论了等效弹簧质量m对它们的影响。研究结果表明，座椅振动系统可以近似地视为线性系统。固有频率和阻尼系数都是弹簧刚度，剪式连杆机构的几何参数和等效弹簧质量m的函数。 HY-Z04型剪刀连杆座的计算分析表明，其固有频率和阻尼系数随质量m的增加而减小。阻尼系数很高，以致在隔振区中座椅减振能力降低；等效弹簧质量m对动态放大系数有明显影响：随着m的增大，动态放大系数在振动放大区增加，在振动隔离区减少。

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