A damage phenomenon called fretting fatigue frequently takes place when two contact bodies are clamped together under a normal contact load along with a small-scale oscillatory motion due to cyclic loading. In contrast to the constant contact loading, less attention has been paid to variable contact loading which was technically reviewed in this study. Emphasis was placed on the efforts made over the past decade and the future challenges including nonlinear effects of contact loads, friction, frequency, slip amplitude, wear, and contact mechanic are discussed extensively. It was revealed a need for new fatigue and contact mechanics models by identifying the aforementioned missing parameters.

当两个接触体在正常接触载荷下由于周期性载荷而发生小规模振荡运动时，会经常发生称为微动疲劳的损坏现象。与恒定的接触负载相反，本研究在技术上对此进行了综述，而对可变接触负载的关注较少。重点放在过去十年的努力上，并广泛讨论了未来挑战，包括接触载荷，摩擦，频率，滑移幅度，磨损和接触力学的非线性影响。通过识别上述缺失的参数，揭示了对新的疲劳和接触力学模型的需求。