A new boundary force is proposed to solve rigid body interaction in SPH (Smoothed Particle Hydrodynamics). The new boundary force is impulse-based rather than potential-based. The impulse is converted to a boundary force with a fundamental observation that the impulse is a momentum change which is a result of a force acting on an object during a time interval. Our new impulse-based boundary for...

We present a multiscale method for the simulation of large viscoelastic deformations and show its applicability to biological tissue such as plant tissue. At the microscopic level we use a particle method to model the geometrical structure and basic properties of individual cells. The cell fluid, modeled as a viscoelastic fluid by means of Smoothed Particle Hydrodynamics (SPH) is enclosed in an...

Abstract Dynamic compaction (DC) is vastly utilized to improve the strength characteristics of soils. To predict soil deformations derived from DC operations, usually numerical simulation analysis applied. For conduction such simulations, several approaches with different elemental formulations can be used. From perspective finite element (FEA), there are four main including Lagrangian, Arbitra...

To supervise and control the whole simulation of Smoothed Particle Hydrodynamics (SPH) model, a mixed language programming (MLP) method is particularly described that will not only take advantages of the Fortran’s strong computing power but also give full play to the Visual Basic’s (VB) flexible interface design and visualization capabilities. Then, a VBF SPH model with Model Monitoring Technol...

Over the past few decades, there has been a growing interest in modelling of machining processes. In this regard, smoothed particle hydrodynamics (SPH) is one of the latest methods used for that purpose. SPH is a powerful technique that can be used in handling problems of large deformation that are difficult to be tackled using traditional finite element methods. The current work aims to presen...

We give a brief introduction to smoothed particle hydrodynamics methods for continuum mechanics. Specifically, we present our 3D SPH code to simulate and analyze collisions of asteroids consisting of two types of material: basaltic rock and ice. We consider effects like brittle failure, fragmentation, and merging in different impact scenarios. After validating our code against previously publis...

This paper describes a novel approach to neighbourfinding in Smoothed Particle Hydrodynamics (SPH) simulations with large dynamic range in smoothing length. This approach is based on hierarchical cell decompositions, sorted interactions, and a task-based formulation. It is shown to be faster than traditional tree-based codes, and to scale better than domain decomposition-based approaches on sha...

This paper describes a new fast and implicitly parallel approach to neighbour-finding in multi-resolution Smoothed Particle Hydrodynamics (SPH) simulations. This new approach is based on hierarchical cell decompositions and sorted interactions, within a task-based formulation. It is shown to be faster than traditional tree-based codes, and to scale better than domain decomposition-based approac...

Abstract In recent years, hybrid composite materials are of increasing interest during the search for new to be used as ballistic barriers (shields) and kinetic energy absorbers. The main objective this study is test absorption capacity Zn-Al alloys filled with various polymer (epoxy resin, polyurethane resin silicone). resistance modern direct firing a 5.56 × 45 mm SS109 projectile quasi-stati...

In this paper we investigate the accuracy of a Darcy-scale model for competitive adsorption in a porous medium through comparison with a smoothed particle hydrodynamics (SPH) pore-scale model. SPH is a Lagrangian, particle based modeling method which uses the particles as interpolation points to directly discretize the governing equations of the system. The models consider a binary system of co...