Improvement of newman's model on fatigue crack closure
Newman had brought his crack closure model. It is done well in simple closure model, but it is not exactitude when there is a complex elastic-plastic region in crack front and has a variety stress-ratio. The paper improved the Newman's model. Using the model, the crack growth are calculated on the variety stress-ratio and over-loading. The crack closure is simulated.
Published inZhongguo Jixie Gongcheng/China Mechanical Engineering