A5028505437- Numerical methods in engineering
- Geotechnical Engineering and Underground Structures
- Electromagnetic Simulation and Numerical Methods
- Astro and Planetary Science
- Planetary Science and Exploration
- Advanced Numerical Methods in Computational Mathematics
- Fluid Dynamics Simulations and Interactions
- Space Satellite Systems and Control
- Adaptive optics and wavefront sensing
- Stellar, planetary, and galactic studies
- Spacecraft Design and Technology
- Geophysical Methods and Applications
- Astronomical Observations and Instrumentation
- High-Velocity Impact and Material Behavior
- Infrared Target Detection Methodologies
- Astronomy and Astrophysical Research
- Calibration and Measurement Techniques
- Optical measurement and interference techniques
- Structural Health Monitoring Techniques
- Satellite Image Processing and Photogrammetry
- Concrete Properties and Behavior
- Ultrasonics and Acoustic Wave Propagation
- Sensor Technology and Measurement Systems
- Scientific Measurement and Uncertainty Evaluation
- CCD and CMOS Imaging Sensors
Center for Advanced Studies Research and Development in Sardinia
2015-2024
Space (Italy)
2015-2024
University of Padua
2015-2024
Images from the OSIRIS scientific imaging system onboard Rosetta show that nucleus of 67P/Churyumov-Gerasimenko consists two lobes connected by a short neck. The has bulk density less than half water. Activity at distance Sun >3 astronomical units is predominantly neck, where jets have been seen consistently. rotates about principal axis momentum. surface morphology suggests removal larger volumes material, possibly via explosive release subsurface pressure or creation overhangs sublimation,...
Summary In this work, the authors formulate a 2‐D linearized ordinary state‐based peridynamic model of elastic deformations and compute stiffness matrix for plane stress/strain conditions. This is then verified by testing recovery properties given Poisson's ratios in range 0.1–0.45. The convergence behavior solutions terms size nonlocal region comparison with classical (local) mechanics also discussed. degree to which surface effect influences examined, values are found have definite...
Abstract Peridynamics is a recently proposed continuum theory based on non local approach and formulated with integral equations. The suitable for dealing crack propagation in solid materials. original peridynamic formulation regarded dynamic problems was adapted to the static case mainly using relaxation method by introducing substantial amount of numerical damping time integration. In present work implementation within an implicit code phenomena Newton-Raphson presented applied several...
In this paper, a peridynamic-enhanced finite element formulation is introduced for the numerical simulation of thermo–hydro–mechanical coupled problems in saturated porous media with cracks. The proposed approach combines Finite Element (FE) method governing heat conduction–advection and fluid flow fractured domain, Peridynamic (PD) describing solid phase deformation capturing crack propagation. Firstly, consolidation problem column simulated by using approach. m- δ-convergence studies are...
This paper presents a method to couple FEM meshes with ordinary state-based peridynamic grids. It generates computational tool that is as efficient computer methods based on classical continuum mechanics and flexible peridynamics in dealing crack propagation. Moreover, it removes most of the problems due surface effects typical nonlocal such OSB-PD. The adaptive dynamic relaxation approach used solve linear elastic propagation problems. successfully applied complex case 3 D able accurately...
Abstract Peridynamics is a nonlocal continuum theory capable of modeling effectively crack initiation and propagation in solid bodies. However, the nature this cause two main problems near boundary body: an undesired stiffness fluctuation, so‐called surface effect , difficulty defining rational method to properly impose conditions. The analyzed analytically numerically present paper state‐based peridynamic model. authors propose modified fictitious node based on extrapolation with truncated...
Purpose The paper aims to use a switching technique which allows couple nonlocal bond-based Peridynamic approach the Meshless Local Exponential Basis Functions (MLEBF) method, based on classical continuum mechanics, solve planar problems. Design/methodology/approach coupling has been achieved in completely meshless scheme. domain is divided three zones: one only Peridynamics applied, method applied and transition zone where gradual between two approaches takes place. Findings new generates...