A framework is presented for the formulation of a class continuum constitutive models sharp interfaces with non-linear viscoelastic behaviour due to considerable isotropic interfacial microstructure. For thermodynamically consistent elastoviscoplastic interface model we adapt an approach successful in describing bulk polymer glasses. The has clear separation between dilatation and shear, used p...

Four vitrimers were made using polyethylene – glycidyl methacrylate copolymer (PE-GMA) and 3,3′ dithiodipropionic acid (DTDPA) a two-step procedure. The amount of DTDPA added was varied, therefore, the crosslink density also varied. Rheological experiments performed. exhibit different rheological behavior depending on angular frequency applied, which most likely stems from presence crosslinked ...

Alkali-activated materials have the potential to replace Portland cement in certain applications. To better understand these binders’ properties, it is relevant study their rheological behaviour at early ages, like case of paste. There are already many studies on available literature, using fly ash, metakaolin, and ground granulated blast furnace slag as precursors. However, this discusses beha...

Synopsis This paper is focused on the theoretical modeling of the rheological properties of the magnetic suspensions in shear flows under an external magnetic field aligned with the streamlines. The conventional theory postulates that the field-induced aggregates of magnetic particles are highly anisotropic and aligned with the flow direction. Therefore, no substantial variation in suspension v...

In line with the current research on the ultimate strength assessment of ship hull girders, careful understanding of the collapse behaviour of unstiffened plate elements within the ship hull girders is an important and necessary task. In this paper, the collapse behaviour of unstiffened plates under longitudinal and transverse thrust is studied by elastoplastic large deflection FEM and the char...

BACKGROUND AND METHODS It is important to ensure that blood flow is modelled accurately in numerical studies of arteries featuring drug-eluting stents due to the significant proportion of drug transport from the stent into the arterial wall which is flow-mediated. Modelling blood is complicated, however, by variations in blood rheological behaviour between individuals, blood's complex near-wall...

We use multi-arm star polymers as model soft colloids with tuneable interactions and explore their behaviour in the glassy state. In particular, we perform a systematic rheological study with a well-defined protocol and address aspects of ageing and shear melting of star glasses. Ageing proceeds in two distinct steps: a fast step of O(10(3) s) and a slow step of O(10(4) s). We focus on creep an...

this paper investigated the effects of combining fibers with self-consolidating concrete (scc). 12 series of test specimens were prepared using three kinds of fibers including steel, polyphenylene sulfide (pps) and glass fibers with four different volumes fractions and one specimen without fibers as a reference sample. all plans were subjected to fresh concrete tests. for mechanical behavior of...