Test and Research of Low Temperature Characteristic Curve of Disc Spring
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摘要: 为满足低温风洞设计与选型需要，研究了温度为110 K条件下碟形弹簧的特性曲线。通过有限元分析，确定了试验方案；以电子万能试验机为基础，设计构建了具有保温功能的低温测控试验平台；测量获得了几种碟形弹簧在常温与低温条件下的特性曲线。试验结果表明，加载时碟形弹簧的低温负荷较常温负荷更大，卸载时碟形弹簧的低温负荷先高于后低于其常温负荷。为碟形弹簧在低温风洞及其它低温环境中的应用提供了依据。Abstract: In order to meet the design and selection requirements of cryogenic wind tunnels, the characteristic curves of disc spring at 110 K is studied. The experimental scheme is determined via finite element method. A low temperature testing platform with insulation function is designed and constructed based on the electronic universal testing machine. The characteristic curves of several disc springs at normal and low temperature are obtained. The test results show that the low temperature load when loading of disc spring is higher than the normal temperature load, and the low temperature load of disc spring is firstly higher than then lower than its normal temperature load, which provides the basis for applying to low temperature wind tunnel and other low temperature environment.
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Key words:
- wind tunnel /
- disc spring /
- characteristic curve /
- finite element analysis
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表 1 0Cr17Ni7Al测试用碟形弹簧尺寸
代号 D/mm d/mm t/mm h0/mm 105537 40 20.4 1.5 0.95 105542 45 22.4 1.75 1.05 105543 45 22.4 2.5 0.8 注: D为外径; d为内径; t为厚度; h0为压平时变形量计算值。 
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