27 research outputs found
Complete Tangent Stiffness for eXtended Finite Element Method by including crack growth parameters
No full textNumerical lower bound analysis of plate bending problems containing requirements on shear capacity and shear-bending interaction
No full textConvex and effective yield surfaces for numerical rigid plastic limit analysis of reinforced concrete structures with in-plane forces
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Validation of reinforced concrete pile caps using non-linear finite element analysis and finite element limit analysis
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Isolated Human Islets Trigger an Instant Blood Mediated Inflammatory Reaction: Implications for Intraportal Islet Transplantation as a Treatment for Patients with Type 1 Diabetes
No full textConstitutive mixed mode model for cracks in concrete
No full textThe scope of the paper is to set up a constitutive mixed mode model for cracks in concrete. The model is formulated at macro level and includes the most important micro scale effects. An associated plasticity model inspired by the modified Cam clay model is established. The hardening parameters are based on the standard Mode I tensile softening response and the response for Mode I crushing. The roughness of the crack is included through a topographic description of the crack surface. The constitutive behavior is based on the integration of local contributions. The local mixed mode ratio is determined from the topographic information and the constitutive model is thereby purely mechanically based. Using the actual topographic description the model is validated against experimental results for mixed mode crack openings
