This study proposes a multi-scale gradient enhanced nonlocal modeling framework aimed at predicting the mechanical response of long glass fiber reinforced polyamide composites that exhibit nonlinear viscoelastic viscoplastic rheology with ductile damage driven by plasticity. To treat numerically material instabilities severe levels, an internal length scale is introduced within model through co...

Fiber-reinforced polymer (FRP)–concrete hybrid sections, composed of FRP profiles and a concrete slab, have gathered attention in construction due to their lightweight, easy installation, high durability. However, the low shear strength brittle behavior commercially available pultruded often leads failure at load levels. To enhance ductility, this study proposes novel H-shaped profile that is b...

A simple mechanical model and dimensional analysis are used to derive a scaling law for the partitioning between slip rate on a strike-slip fault and distributed deformation in the far-field. The depth of the fault, the distributions of stress, strain rate and slip rate are solved for a given far-field force or displacement in a 2-D medium with a linear temperature-dependent viscous rheology. A...

Recent ideas on the mechanisms controlling the initial stages of plastic flow at cracks in intrinsically brittle materials, at the ductile-brittle transition, are reviewed. New experiments on precracked specimens of Si are reported, which confirm earlier work that the ductile-brittle transition is controlled by dislocation velocity. A model has been developed in which at the ductile-brittle tra...

[1] Comparison of analogue experiments at crustal and lithospheric scale provides essential information concerning the mode of deformation during lithospheric extension. This study shows that during extension, lithospheric deformation is controlled by the development of shear zones in the ductile parts. At lithospheric scale, the global deformation is initiated by the rupture of the brittle man...

To study the dynamic tensile mechanical properties of steel polypropylene hybrid fiber reinforced concrete (SP-HFRC) after high temperature, split Hopkinson pressure bar (SHPB) splitting tests were carried out, and optimal content combination was obtained. With plain (PC) as control, effects addition on energy dissipation failure forms specimens temperatures analyzed. LS-DYNA software used to s...

Fiber-reinforced composites are increasingly used as an outer shell of sporting helmets alternative to conventional thermoplastic shells like Acrylonitrile butadiene styrene (ABS), Polyurethane (PU), and polycarbonate (PC) for improved protection. The current research presents a detailed study manufacture novel woven carbon/Elium® (WEL) composite investigate the details based on impact tests fo...

In this paper we study breakage rate statistics of small colloidal aggregates in nonhomogeneous anisotropic turbulence. We use pseudospectral direct numerical simulation of turbulent channel flow and Lagrangian tracking to follow the motion of the aggregates, modeled as sub-Kolmogorov massless particles. We focus specifically on the effects produced by ductile rupture: This rupture is initially...

The use of synthetic fibers as reinforcement in fiber-reinforced cementitious composites (FRCC) demonstrates a combination better ductile response vis-à-vis metallic ones, enhanced durability high pH environment, and resistance to corrosion well self-healing capabilities. This study explores the effect macro- micro-scale polypropylene (PP) on post-crack energy, ductility, potential FRCC. Labora...

Ceramic matrix composites usually utilize carbon or ceramic fibers as reinforcements. However, such often expose a low ductility during failure. In this work, we follow the idea of reinforcement concept reinforced by refractory metal to reach pseudo ductile behavior Tungsten and molybdenum were chosen in SiCN manufactured polymer infiltration pyrolysis process. The investigated with respect mic...