Peridynamics (PD) is a nonlocal continuum theory based on integro-differential equations without spatial derivatives. The elongation fracture criterion is implicitly incorporated in the PD theory, and fracture is a natural outcome of the simulation. On the other hand, a new fracture criterion based on the crack opening displacement combined with peridynamic (PD-COD) is proposed. When the relati...

Results and Conclusions: The results show that, brittle fracture is the dominant way for SiC ceramic’s removal mechanism, plastic deformation always exists during the drilling process. Brittle fracture includes cleavage fracture, transgranular fracture, intergranular fracture, material peeling off and grain boundary breakage; resintering and recrystallization happen under the joint action of gr...

Three separate aspects of cutting are investigated which complement other papers on the mechanics of separation processes presented at this interdisciplinary Theo Murphy meeting. They apply in all types of cutting whether blades are sharp or blunt, and whether the material being cut is 'hard, stiff and strong' or 'soft, compliant and weak'. The first topic discusses why it is easier to cut when...

numerical methods such as boundary element and finite element methods are widely used for the stress analysis in solid mechanics. this study presents boundary element method based on the displacement discontinuity formulation to solve general problems of interaction between hydraulic fracturing and discontinuities. the crack tip element and a higher order boundary displacement collocation techn...

4.1 Methods of fracture stabilization 17 4.2 Nonoperative fracture management 17 4.2.1 Fracture healing without treatment 4.2.2 Conservative treatment of fractures 4.3 Surgical fixation with relative stability 19 4.3.1 Mechanics of techniques of relative stability 4.3.2 Implants 4.3.3 Mechanobiology of indirect or secondary fracture healing 4.4 Surgical fixation with absolute stability 22 4.4.1...

The materials that we use always have some defects. Under static, cycling or dynamic load the as a function of crack size and environment can initiate fracture. mechanism depends on several factors, like material properties, type stress kind. traditional fracture mechanics theories suggest solutions to predict crack-grow are well known in case elastic-plastic behaviour also for brittle under di...

Composite materials utilizing the sandwich structure are a basic family of materials and possess a highly increasing use in modern industrial applications. Since the traditional approach to structural design and material selection tends to be replaced by the Fracture mechanics approach, it is worth understanding the way that the Fracture mechanics approach is applied. The traditional approach t...