Microindentation Test Modelling in the Silicon Nitride Ceramics by Application of the Cohesive Zone Approach

Vladislav Kozák; Zdeněk Chlup

doi:10.4028/www.scientific.net/KEM.627.329

Paper Titles

Application of Acoustic Emission for Identification of Differences in Fatigue Damage of Selected Materials for Power Plants
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Work of Fracture due to Compressive Component of Loading in Wedge Splitting Test on Quasi-Brittle Cementitious Specimens
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Prediction of Corrosion Processes on Weathering Steel Bridges
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Analytical 1D Model of Delamination Development and Strength of Layered Composite Beam in Post-Buckling
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Microindentation Test Modelling in the Silicon Nitride Ceramics by Application of the Cohesive Zone Approach
p.329

Comparative Study on the Fatigue Behaviour of SCC and VC
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Review of FE-Based Fatigue Evaluation Methods for the Rib to Floorbeam Welds in Orthotropic Bridge Decks
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An Integrated Creep-Fatigue Theory for Material Damage Modeling
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Stress Analysis of Cracked MMCs with Lamellar Microstructure
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 627Microindentation Test Modelling in the Silicon...

Microindentation Test Modelling in the Silicon Nitride Ceramics by Application of the Cohesive Zone Approach

Abstract:

Silicon nitride based ceramics have received considerable attention during the last decades due to their very good room and high-temperature properties. Ceramics such as silicon nitride (Si₃N₄) are acknowledged as first choice for modern bearing applications. The influence of grain bridging on the strength and toughness was found. The prediction of crack propagation through interface elements based on the fracture mechanics approach and cohesive zone model is investigated from amount damage models. Using cohesive models the behaviour of materials is realized by two types of elements. The former is the element for classical continuum and the latter is the connecting cohesive element. Within the standard finite element package Abaqus the new finite element has been developed; it is written via the UEL procedure. The shape of the traction separation law for experimental materials is estimated from macroscopic tests, J–R curve is predicted and stability of the bridging law is tested. The shape of the bridging law is verified using the microindentation test, where the maximum crack length not exceeded 150 μm. The scope of the bridging effect is verified using the standard XFEM elements implemented in Abaqus.

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Advances in Fracture and Damage Mechanics XIII

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Periodical:

Key Engineering Materials (Volume 627)

Pages:

329-332

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.627.329

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Online since:

September 2014

Authors:

Vladislav Kozák*, Zdeněk Chlup

Keywords:

Cohesive Zone Model, Finite Element User’s Procedure, Si₃N₄ Composite

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