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Nikolaos Mavrodontis

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Modeling extreme deformations and soil structure interaction for deep sea applications with Abaqus

Posted by Nikolaos Mavrodontis on Feb 8, 2021 9:55:11 AM

 

 

In this blog post, we will be looking into a different discretization method, available in Abaqus Explicit. This discretization method can prove to be really useful, in applications where gross distortions or large spatial displacements are expected to occur. A category of applications that can benefit from such a technology, are installations/decommissions of deep sea components, interacting with the seabed.

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Topics: CEL, SPH, shell layer, Soil Structure Interaction, Tips, Tricks & Approaches, Explicit

Abaqus 2021 - What's new?

Posted by Nikolaos Mavrodontis on Dec 7, 2020 4:01:02 PM

Abaqus 2021 is out. In this blog post, we will be showing some of the enhancements, that we found interesting. Additionally most major enhancements will be highlighted, for this new Abaqus release. For a more in depth explanation of the new enhancements, you can take a look in the release notes, provided here.

The discussed enhancements, are included in versions up to Abaqus 2021 FD03(FP.CFA.2042), which has been released. More  enhancements are scheduled for later releases of Abaqus 2021x.

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Topics: whats new, Tips, Tricks & Approaches, Abaqus 2021

Analysis of a bolted composite joint with ply failure done in Abaqus

Posted by Nikolaos Mavrodontis on Nov 10, 2020 9:00:00 AM

In this blog post, we will be showing an analysis of a bolted joint. The joint comprises of two flat plates that are made of carbon fiber reinforced polymer material (CFRP). Both plates have the same 8 ply layup (symmetric), and have been modelled with stacked continuum shell elements. Ply failure modelling has been considered in terms of Hashin failure criterion damage initiation and fracture energy damage evolution.

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Topics: Abaqus, bolted connections, composite

Calibrate hyperelastic and viscoelastic materials in the 3DEXPERIENCE Platform - Material Calibration App

Posted by Nikolaos Mavrodontis on Aug 31, 2020 10:32:29 AM

In this blog post, we will be demonstrating the material calibration capabilities of the Material Calibration App, available through the 3DEXPERIENCE Platform. Two different materials will be calibrated against input test data, in order to attain their material parameters, necessary for finite element analyses. The resulting material models will include hyperelastic and  linear/non-linear viscoelastic behavior.

This post will also highlight some of the exclusive material calibration capabilities of the Material Calibration App.

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Topics: material calibration, 3DEXPERIENCE Platform, Material calibration app

Metal tube hydroforming process and forming limit diagrams in Abaqus

Posted by Nikolaos Mavrodontis on Aug 5, 2020 10:30:00 AM

In this blog post, we will be discussing about metal tube hydroforming with Abaqus. We will be using forming limit diagrams to create the material's strain envelope, for avoiding necking (rupture), a possible failure mode, in this type of metal forming process. This will be demonstrated in a hydroforming process simulation of a metal bellows joint.

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Topics: Abaqus, Tips, Tricks & Approaches, hydroforming, Forming Limit Diagram, FLD

Performance assessment of a Peristaltic Pump

Posted by Nikolaos Mavrodontis on May 22, 2020 11:37:02 AM

In this blog post, we will be showcasing a fully coupled fluid structure interaction (FSI) analysis, of a peristaltic roller pump. This study will focus on assessing the performance of a peristaltic pump, under operation. This co-simulation analysis, will solve for both the structural and fluid domains' unknown quantities, during 1 revolution of the rotating mechanism of the pump.

This is an example of a challenging application, in which numerical modelling and computer simulations can provide a lot of insight and value.

The aspects we want to evaluate in this digital model are; determining the volume flow-rate for a given rotation speed, assessing contact stress areas on the tube, and determining the torque output for the given rpm.

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Topics: Abaqus, FSI, XFlow CFD, Tips, Tricks & Approaches, Peristaltic Pump, Co-Simulation

Kinematic vs Distributed coupling constraints in Abaqus

Posted by Nikolaos Mavrodontis on Apr 7, 2020 9:30:00 AM

In this blog post, we will be discussing the differences between the kinematic and distributing constraints in Abaqus. The differences between these types of constraints will be highlighted in an example model.

Introduction and Usage

Surfaced based coupling constraints are used in Abaqus for the following purposes:

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Topics: Abaqus, Tips, Tricks & Approaches, distributed coupling, kinematic coupling, constraints

Generating FEA reports with Abaqus

Posted by Nikolaos Mavrodontis on Mar 9, 2020 3:10:36 PM

In this blog post, we will be showcasing the Abaqus Report Generator plugin (RGP), that is by default included in the Abaqus product installation. The RGP allows the user to create an HTML report using model and results data. The capabilities and functionality of this plugin will be demonstrated with an exemplary results database.

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Topics: Abaqus, html, 3dxml, report generator plugin

Modelling a composite flanged tube including loading with Abaqus/CAE

Posted by Nikolaos Mavrodontis on Mar 3, 2020 8:52:44 AM

In this blog, we will be providing information on the modelling of laminated composites with Abaqus. Modelling will be done using the composite layup tool, and material orientations will also be assigned.

Those modelling features will be demonstrated with a relevant example case of a composite flanged tube under loading. The tube will be subjected to thermal and radial pressure loading.

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Topics: Abaqus/CAE, composite analysis, ply, flange, tube, laminated, fibre, matrix, carbon, epoxy

Abaqus Hardening Laws on single element model

Posted by Nikolaos Mavrodontis on Jan 21, 2020 9:15:00 AM

In this blog post, we will be discussing about some of the most commonly used hardening laws that are available within Abaqus, and can be deployed whenever a metal’s plastic (inelastic) behavior and the nature of the applied load (monotonic, cyclic) becomes relevant in the modeling.

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Topics: Abaqus, hardening laws, hardening

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Simuleon blog topics related to Finite Element Analysis like; Structural Analysis and CFD analysis performed with SIMULIA Abaqus FEA, XFlow CFD, Isight Simulation Automation, Tosca Topology Optimization and Fe-Safe accurate Fatigue.

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