Due to the visco‐elasto‐plastic material behavior, the added energy to concrete specimens during fatigue tests is transformed into another form of energy. Besides the description of the energetic material behavior of concrete, the elastic and the plastic part of the energy as well as the dissipation energy are analyzed for different specimens. Especially the dissipation energy shows a correlation with the damage process as a result of the cyclic loading. Regarding this correlation, a new energetic damage model is introduced. With this model, a degree of damage during the tests and the development of the damage parameter over the load cycles can be determined. First tests with the developed model show good and plausible results.

中文翻译：

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关于混凝土疲劳的能量损伤分析

由于粘弹塑性材料的特性，在疲劳测试过程中，混凝土试样的附加能量被转换为另一种能量形式。除了描述混凝土的高能材料性能外，还针对不同的样本分析了能量的弹性和塑性部分以及耗散能量。特别地，由于循环载荷，耗散能量显示出与损伤过程的相关性。关于这种相关性，引入了一种新的能量损伤模型。使用该模型，可以确定测试过程中的损坏程度以及负载周期内损坏参数的发展情况。使用开发的模型进行的首次测试显示了良好且合理的结果。