This paper presents a computational fluid dynamics model fit for multi-layer 3D Concrete Printing. The numerical utilizes an elasto-visco-plastic constitutive to mimic the flow behaviour of cementitious material. To validate model, simulation data is compared experimental from printed walls. obtained results show that can reproduce with high accuracy and quantify extrusion load imposed upon lay...

The mechanics of the cutting process on the microscopic level differ fundamentally from the conventional macro cutting. For example, the tool edge radius influences the cutting mechanism in micro machining significantly with regard to the effective rake angle, the minimum chip thickness, the dominance of ploughing, and the related elasto-plastic deformation of the workpiece material. These phen...

Due to the nonlinear nature of the inter-particle contact, granular chains made of elastic spheres are known to transmit solitary waves under impulse loading. However, the localized contact between spherical granules leads to stress concentration, resulting in plastic behavior even for small forces. In this work, we investigate the effects of plasticity in wave propagation in elasto-plastic gra...

This paper is on the elasto-plastic analysis of plane stress problems. A five-parameter yield surface is presented. This yield criterion uses associate flow along with mixed hardening rule. The analytical formulations are written and related computer program for non-linear analysis is prepared. Finally, based on the formulations, numerical examples are solved.

Biorthogonal wavelet-based full-approximation schemes are introduced in this paper for the numerical solution of elasto-hydrodynamic lubrication line and point contact problems. The proposed methods give higher accuracy in terms of better convergence with low computational time, which have been demonstrated through the illustrative problems.

A geometrically nonlinear, shear-deformable 3D beam formulation with inelastic material behavior and its numerical discretization by a mixed isogeometric collocation method are presented. In particular, the constitutive model captures elasto-visco-plasticity damage/softening from Mullin’s effect, which applies to modeling of metallic polymeric materials, e.g., in additive manufacturing applicat...

In the die design of high pressure casting (HPDC), in order to prevent from warpage, it is essential predict ejection force each ejector pin before locating it. Recently, Shiga et al. revealed that their developed elasto-plastic-creep model more accurate than conventional elasto-plastic models estimate thermal stress during cooling with constraint dies.

Purpose Most support surfaces in comfort applications and sporting equipment are made from pressure-relieving foam such as viscoelastic polyurethane. However, for some users, is not the best material it acts a thermal insulator may offer adequate postural support. The additive manufacturing of alleviate these issues, but design investigation needed to optimize printing parameters use pressure r...

To model the engineering performance of components made polyvinylidene fluoride (PVDF), 3D elasto-viscoplastic Eindhoven glassy polymer (EGP) is extended to describe rate-dependent behavior PVDF. Careful analysis intrinsic PVDF revealed that postyield compressive response shows a strain rate-dependence evolves with increasing deformation. The extension constitutive captures deformation-dependen...