The test results show that the fatigue property curve and the cyclic stress-strain curve of LZ50 axletree steel perfectly conform to double logarithm linear relationship.
采用载荷控制、三角波动态载荷对水泥土进行三轴疲劳试验，得出水泥掺量、加载频率和循环周数对水泥土疲劳特性的影响规律。
Concrete stress-strain curves under cyclic loads include not only envelope curve, but also unloading and re-loading curves.
混凝土的反复加载应力-应变曲线不仅包括骨架曲线，还包括卸载及再加载曲线。
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