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推导了C型环的挠度——应力关系式,对NACE TM 0177和GB/T 15970.5中的加载应力计算公式进行了比较和讨论;进行了C型环应力与加载挠度的测试,通过公式计算应力值与实际应力值的比较,对加载应力误差进行了分析和讨论,进一步确定了这两个标准各自的适用范围,推荐了对试件进行合理加载的方式。
The relationship between deflection and stress of C-rings was deduced. The calculation formulas of loading stress in NACE TM 0177 and GB / T 15970.5 were compared and discussed. The stress and load deflection of C-ring were tested and the stress Compared with the actual stress value, the loading stress error is analyzed and discussed, and the applicable scope of each of these two standards is further confirmed. The way to reasonably load the specimen is recommended.