Analysis on Inherent Characteristics of Non-pneumatic Tire with Bird's Nest Structure Type
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摘要: 基于新型蜂窝结构式免充气轮胎固有频率的计算方法, 研究并推导出鸟巢结构式免充气轮胎鸟巢结构的固有频率计算公式。分析了各结构参数对鸟巢结构固有频率的影响规律, 研究了鸟巢结构式免充气轮胎的固有频率影响因素, 利用ABAQUS有限元仿真分析验证了理论的正确性。利用模态分析方法研究了辐条阵列数对鸟巢结构式免充气轮胎固有频率的影响, 并进行了免充气轮胎受载时的振动频率分析, 对比了充气轮胎受载时的振动频率变化规律。结果表明, 鸟巢结构式免充气轮胎刚度更大, 受载时更具有优势。Abstract: Based on the calculation method of natural frequency of the new type honeycomb structure non-pneumatic tire, the natural frequency calculation formula of the bird's nest structure non-pneumatic tire is studied and deduced. The influence of various structural parameters on the natural frequency of the bird's nest structure is analyzed, and the factors affecting the natural frequency of the bird's nest structure non-pneumatic tire are studied. The finite element simulation of ABAQUS is used to verify the correctness of the theory calculation. Using the method of modal analysis, the influence of the number of spoke arrays on the natural frequency of the bird's nest structure non-pneumatic tire is studied, and the vibration frequency of the non-pneumatic tire under load is analyzed, and the vibration frequency change law of the pneumatic tire under load is compared. The results show that the non-pneumatic tire with bird's nest structure is more rigid and more advantageous when loaded.
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Key words:
- bird's nest structure /
- natural frequency /
- finite element simulation /
- modal analysis
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表 1 聚氨酯材料主要参数表
密度/(g·cm-3) 弹性模量/MPa 泊松比 1.2 24 0.49 表 2 不同阵列数的鸟巢结构分层结构的固有频率
阵列 理论计算值/Hz 仿真计算值/Hz 误差值/% 20 104.98 104.12 0.82 30 84.68 85.96 0.6 40 79.29 77.47 2.29 表 3 分层结构理论计算值与鸟巢结构仿真计算值
阵列数 分层结构理论计算值/Hz 鸟巢结构仿真计算值/Hz 误差值/% 20 104.98 104.28 0.67 30 84.68 85.52 1.11 40 79.29 79.58 -0.36 表 4 鸟巢结构与鸟巢结构式免充气轮胎的固有频率
阵列数 鸟巢结构仿真计算值/Hz 鸟巢结构式免充气轮胎仿真计算值/Hz 20 104.28 74.51 30 85.52 67.89 40 79.58 63.48 表 5 鸟巢结构式免充气轮胎前6阶模态
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