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Toward nanomechanical models of liquid-phase exfoliation of layered 2D nanomaterials: Analysis of a π − peel model

Botto, L. (author)

In liquid-phase exfoliation for the production of 2D nanomaterials fluid forces are used to gently overcome adhesive interlayer forces, leading to single- or few-layer 2D nanomaterials. Predicting accurately the critical fluid shear rate for exfoliation is a crucial challenge. By combining notions of fluid mechanics and fracture mechanics, we...

journal article 2019

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Accelerating crack growth simulations through adaptive model order reduction

Rocha, I.B.C.M. (author), van der Meer, F.P. (author), Taumaturgo Mororo, L.A. (author), Sluys, Lambertus J. (author)

Accurate numerical modeling of fracture in solids is a challenging undertaking that often involves the use of computationally demanding modeling frameworks. Model order reduction techniques can be used to alleviate the computational effort associated with these models. However, the traditional offline-online reduction approach is unsuitable...

journal article 2019

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Upscaling Cement Paste Microstructure to Obtain the Fracture, Shear, and Elastic Concrete Mechanical LDPM Parameters

Sherzer, G. (author), Gao, P. (author), Schlangen, E. (author), Ye, G. (author), Gal, E. (author)

Modeling the complex behavior of concrete for a specific mixture is a challenging task, as it requires bridging the cement scale and the concrete scale. We describe a multiscale analysis procedure for the modeling of concrete structures, in which material properties at the macro scale are evaluated based on lower scales. Concrete may be viewed...

journal article 2017

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Microscale Testing and Modelling of Cement Paste as Basis for Multi-Scale Modelling

Zhang, H. (author), Šavija, B. (author), Chaves Figueiredo, S. (author), Lukovic, M. (author), Schlangen, E. (author)

This work aims to provide a method for numerically and experimentally investigating the fracture mechanism of cement paste at the microscale. For this purpose, a new procedure was proposed to prepare micro cement paste cubes (100 × 100 × 100 µm3) and beams with a square cross section of 400 × 400 µm2. By loading the cubes to failure with a...

journal article 2016

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A testing preocedure for the evaluation of directional mesh bias

Slobbe, A.T. (author), Hendriks, M.A.N. (author), Rots, J.G. (author)

This paper presents a dedicated numerical test that enables to assess the directional mesh bias of constitutive models in a systematic way. The test makes use of periodic boundary conditions, by which strain localization can be analyzed for different mesh alignments with preservation of mesh uniformity and with exclusion of boundary disturbances...

conference paper 2013

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A lattice-particle approach for the simulation of fracture processes in fiber-reinforced high-performance concrete

Montero-Chacón, F. (author), Schlangen, H.E.J.G. (author), Medina, F. (author)

The use of fiber-reinforced high-performance concrete (FRHPC) is becoming more extended; therefore it is necessary to develop tools to simulate and better understand its behavior. In this work, a discrete model for the analysis of fracture mechanics in FRHPC is presented. The plain concrete matrix, made of mortar and coarse aggregates, is...

conference paper 2013

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Fracture analysis of cement treated demolition waste using a lattice model

Xuan, D. (author), Schlangen, H.E.J.G. (author), Molenaar, A.A.A. (author), Houben, L.J.M. (author)

Fracture properties of cement treated demolition waste were investigated using a lattice model. In practice the investigated material is applied as a cement treated road base/subbase course. The granular aggregates used in this material were crushed recycled concrete and masonry. This results in six different types of phases in the mixture:...

conference paper 2013

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Molenaar, J.M.M. (author)

The investigation was undertaken to support innovations in the field of asphalt pavement design and material selection, and to be able to evaluate or judge the risk of failure and cost-effectiveness of newly developed paving materials in order to justify their application. To be able to determine the risk of failure and cost-effectiveness,...

doctoral thesis 2004

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A plane stress softening plasticity model for orthotropic materials

Lourenco, P.B. (author), De Borst, R. (author), Rots, J.G. (author)

journal article 1997

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An interface element for modelling the onset and growth of mixed-mode cracking in aluminium and fibre metal laminates

Hashagen, F. (author), De Borst, R. (author)

journal article 1997

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Some recent developments in computational modelling of concrete fracture

De Borst, R. (author)