Selection of the Crack Driving Force Concept in Con Text of Linear-Elastic and Elastic- Plastic Fracture Mechanics

Kráčalík, Michal

doi:10.22306/am.v3i4.42

Cited by 2 publications

(3 citation statements)

References 12 publications

(22 reference statements)

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“…The scalar product of vectors

and

defines a blunt, i.e., a right or an acute angle between these vectors for any

. At the same time, the plastic deformation velocity vector

must be normal to the loading area and the loading area itself must be convex [ 50 , 51 , 52 , 53 , 54 ].…”

Section: An Analytical Description Of Elastic–plastic Materials Behmentioning

confidence: 99%

“…Numerical analyses included monitoring of differences or, on the contrary, the degree of conformity of relevant simulation results, which included information on the distribution and magnitude of the maximum equivalent stresses and deformations, the course of mutual dependence of stresses and deformations for the individual hardening models used. The plasticity condition—shear stress intensity constancy (von Mises)—was chosen according to the conclusions of the analyses described in articles [ 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 ].…”

Section: Numerical Simulations Of the Effects Of Isotropic And Kinmentioning

confidence: 99%

“…At the same time, the plastic deformation velocity vector . ε p must be normal to the loading area and the loading area itself must be convex [50][51][52][53][54].…”

Section: Law Of Plastic Transformationmentioning

confidence: 99%

See 2 more Smart Citations

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

et al. 2020

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In exact analyses of bodies in the elastic–plastic regime, the behavior of the material above critical stress values plays a key role. In addition, under cyclic stress, important phenomena to be taken into account are the various types of hardening and the design of the material or structure. In this process, it is important to define several groups of characteristics. These include, for instance, the initial area of plasticity or load which defines the interface between elastic and plastic deformation area. The characteristics also include the relevant law of plastic deformation which specifies the velocity direction of plastic deformation during plastic deformation. In the hardening condition, it is also important to determine the position, size and shape of the subsequent loading area. The elasto-plastic theory was used for the analysis of special compliant mechanisms that are applied for positioning of extremely precise members of the Compact Linear Collider (CLIC), e.g., cryomagnets, laser equipment, etc. Different types of deformation hardening were used to simulate the behavior of particular structural elements in the elastic–plastic regime. Obtained values of stresses and deformations may be used in further practical applications or as default values in other strain hardening model simulations.

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“…The scalar product of vectors

and

defines a blunt, i.e., a right or an acute angle between these vectors for any

. At the same time, the plastic deformation velocity vector

must be normal to the loading area and the loading area itself must be convex [ 50 , 51 , 52 , 53 , 54 ].…”

Section: An Analytical Description Of Elastic–plastic Materials Behmentioning

confidence: 99%

Section: Numerical Simulations Of the Effects Of Isotropic And Kinmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

et al. 2020

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Application of holographic interferometry in the analysis of stress states in a crack root area

et al. 2020

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This paper deals with the visualization and analysis of interaction of a cutting wedge disintegrator with plastic at low loads. For exploratory research, a contactless optical holographic interferometry method was used, allowing a comprehensive picture of the stress state when opening microcracks. An experimental model was set up for the purposes of the research. The structure of the model as well as its geometric parameters had to comply with the applied optical method. The method of holographic interferometry enabled us to record even the initial stages of the crack. Pictures of holographic interferograms allowed us to observe stress fields on the cutting wedge as well as on the loaded body in the form of interference fringes. In order to record the interferograms, we used the method of two exposures so that we gained double-exposure interferograms, which represent the state of the object during the second exposure. The first exposure was caused by superposition of object-related and reference wave after the object was subjected to a load; the second exposure occurred after the load was removed. We used quantitative analysis to determine stress intensity coefficients from holographic interferograms as followed by the calculation of stresses with respect to axes x and y . The analysis was done for loading forces 1.57 N and 3.14 N. As the load applied to the cutting material was increasing, the density of interference fringes was increasing, too.

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Selection of the Crack Driving Force Concept in Con Text of Linear-Elastic and Elastic- Plastic Fracture Mechanics

Cited by 2 publications

References 12 publications

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

Influence of Different Strain Hardening Models on the Behavior of Materials in the Elastic–Plastic Regime under Cyclic Loading

Application of holographic interferometry in the analysis of stress states in a crack root area

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