Prediction of thermomechanical interactions between fracture surfaces using the boundary element method
Abstract
The structures of most technological applications are subject to complicate thermal loadings. Additionally, the processing of modern materials is usually related with special thermal treatments. The complex geometry of these structures in combination with the rabid changes of the temperature and generally with the imposed thermal load, often leads to the dissolution of continuity of the materials via the creation of cracks, fact that decreases the reliability standards and simultaneously increases dramatically the maintenance and manufacturing cost. The thermal loadings of the cracked structures which are associated with heat absorption and consequently simultaneous dilation of materials, lead to the well known crack closure phenomenon in which the surfaces of the crack come partially or even entirely into contact i.e. they interfering. Due to the complexity and non linear nature of the contact problem, the fracture characterization under crack closure phenomena has not been investigat ...
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