4 Contributo in Atti di Convegno (Proceeding)

4 Contributo in Atti di Convegno (Proceeding): [19693] Home page macrotipologia

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4.1 Contributo in Atti di convegno 16559
4.2 Abstract in Atti di convegno 2695
4.3 Poster 439

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Numerical simulation of dynamic crack propagation in brittle materials using a moving mesh technique

This work presents a robust and efficient numerical approach for simulating dynamic crack propagation processes in brittle materials. The proposed approach couples a standard Finite Element (FE) framework with a Moving Mesh (MM) technique based on the Arbitrary Lagrangian-Eulerian (ALE) formulation. The MM technique allows the computational mesh to dynamically adapt to the evolving geometry caused by growing cracks, specifically by repositioning mesh nodes around the crack tip. In this contex...

Fracture simulation in multiphase materials via ALE-driven cohesive interface strategy

In this work, we present a numerical methodology for simulating crack initiation and propagation in multiphase materials. The approach integrates an Arbitrary Lagrangian–Eulerian (ALE) formulation with an adaptive cohesive interface model, allowing for the dynamic alignment of the crack path and the insertion of cohesive elements along mesh boundaries, without requiring re-meshing. Crack propagation directions are determined based on a stress criterion, while the cohesive interfaces follow a ...

Damage evolution analysis in bioinspired composite structures by using a machine learning-based multiscale modeling approach

Nowadays, accurately predicting how advanced bioinspired composite structures fail under various loading conditions remains a complex task. This is primarily because several different damage mechanisms can occur simultaneously at different scales. Among the existing numerical approaches for predicting failure in such structures, multiscale models are the most promising by virtue of their optimal compromise between accuracy and efficiency. This work introduces a cost-effective, machine learnin...

neXSim: A System for Explaining Nexus of Similarities✶

Recognizing and explaining nexus of similarities between entities is a crucial task that arises in numerous real-life scenarios. Understanding why a group of individuals shares a certain disease or why some products may be more appealing than others are natural examples. Over the last thirty years, a variety of logic-based approaches have been proposed to address this task. However, despite these efforts, there is a gap in available systems capable of exploiting real-world knowledge bases. In...

First-Order Rewritability of Rule-Based Ontology Mediated Queries with Negation

The idea of using an ontology to enrich user queries with domain knowledge has attracted considerable attention from the database and KR communities during the last fifteen years or so. The ontology and the user query can be conveniently seen as two components of one composite query, called ontology-mediated query (omq), while an omq language (OL, QL) collects all such omqs where the ontology is expressed using the ontology language OL and the user query comes from the query language QL. The ...

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