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Nikolaos Mavrodontis

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Recent Posts

Abaqus plug-in utilities

Posted by Nikolaos Mavrodontis on Aug 13, 2019 9:15:34 AM

In this blog post, we will be showcasing some of the plug-ins, available for Abaqus.

A plug-in essentially is a small piece of software installed into another application (Abaqus in this case) in order to extend the application’s capabilities.

 Typically, plug-ins are categorized either as kernel plug-ins or as GUI plug-ins. The first ones consist of functions written using the Abaqus Scripting Interface. GUI plug-ins contain commands that create Graphical User Interfaces.

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Topics: Abaqus, plug-in

Subsea modeling with Soil and Structure interaction in Abaqus - Part 1

Posted by Nikolaos Mavrodontis on Aug 5, 2019 8:53:29 AM

Offshore and subsea structures have been constructed and commissioned for many decades now, resulting in quite innovative and mature technologies.

These structure types are subjected to loads of different nature. Therefore there is the need for developing methods, that allow for a structural assessment under serviceability loads, in a quick but also accurate way.

Particularly, for subsea structures focused on oil extraction from reservoirs, lying under the seabed, interaction with the surrounding soil becomes of critical importance.

In this blog post, we will be investigating a drilling wellhead under external load action while also incorporating the behavior of the surrounding fully saturated soil from the seabed, in terms of nonlinear springs.

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Topics: Abaqus, non-linear springs, wellhead, Soil Structure Interaction, soil represented as spings

Modeling of steel fibre-concrete composites including concrete damage with Abaqus

Posted by Nikolaos Mavrodontis on Jun 17, 2019 2:44:29 PM

This blog post, constitutes a continuation of the previous blog post,regarding modeling of steel fibre reinforced-concrete composites with Abaqus. In the current blog post, we will be showing an exemplary steel fibre composite pull out test, in a 3 dimensional model, wherein,also damage of the concrete matrix, is included.This is realised by using the Concrete Damage Plasticity model, available in Abaqus. 

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Topics: Abaqus, damage, steel fibre concrete composites, concrete

Modeling of steel fibre-concrete composites with Abaqus

Posted by Nikolaos Mavrodontis on May 14, 2019 9:18:53 AM

In this blog post, we will be discussing about steel fibre reinforced concrete (termed as SFRC) and will be showcasing a way (more modelling ways do exist)  to model the interaction between the steel fibre (reinforcement) and the concrete (matrix).

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Topics: Abaqus, steel fibre, pull-out test, concrete composite

Geometry Operations in Abaqus FEA software

Posted by Nikolaos Mavrodontis on Mar 5, 2019 9:51:00 AM

In this blog post, we will be discussing about geometry operations on 3d models, that have been imported in Abaqus as a neutral geometry format, or via the Associative Interface (if you are interested more about the AI, have a look at an earlier blogpost). We will be showing the different tools available in order to detect geometry issues in the imported model (Geometry diagnostics tool, accessible via the Query tool) as well as fix geometry issues from within Abaqus (Geometry Edit toolset, accessible through the Part module in Abaqus).

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Topics: Abaqus, Abaqus geometry edit and repair

Fatigue analysis with fe-safe

Posted by Nikolaos Mavrodontis on Jan 7, 2019 4:48:52 PM

In this post, we will be highlighting the main features of Simulia's fatigue prediction software, fe-safe. Fe safe performs both strain and stress based fatigue calculations, incorporating many different fatigue algorithms (uniaxial strain and stress based, biaxial strain and stress based, advanced thermomechanical fatigue, elastomer fatigue, fatigue of welds etc.). Last but not least, a fatigue calculation example will be shown. This concerns a notched plate under a cyclic fully reversing (tensile-compressive) load.

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Topics: Abaqus, fe-safe, fatigue

Abaqus 2019 - Key Features & How to Download

Posted by Nikolaos Mavrodontis on Dec 7, 2018 5:12:10 PM

Abaqus 2019 is now available. In this blog, we 'll list the most significant new features and enhancements, and explain how to obtain and install Abaqus 2019.

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Topics: Abaqus 2019

Fully coupled thermal structural analysis with Abaqus

Posted by Nikolaos Mavrodontis on Oct 29, 2018 4:59:38 PM

In this post, we will be showing some of the capabilities of Abaqus for performing fully coupled thermal-structural analyses. In particular, an exemplary geometry of a mountain bike's perforated disc together with the breaking pads (included in the caliper-not modelled) will be used to show some of Abaqus' conjugate heat transfer and multiphysics capabilities.

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Topics: Abaqus, thermal-stress, thermal-structural

Modeling Bolted Connections with Abaqus FEA

Posted by Nikolaos Mavrodontis on Sep 18, 2018 9:15:15 AM

In this blog post, we will be discussing about the different methods in modeling bolted connections with Abaqus FEA. At the last section of the post,we will be showcasing a bolted connection, incorporating a pretensioned bolt. Flanged connections are used extensively in most engineering disciplines. They provide a way of interconnecting  various (metallic, plastic etc.) components and their design is often critical for the strength of various components (e.g. bolt strength) and sealing of the assembly. 

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Topics: Abaqus Bolt Loads, bolted connections

Symmetric model generation with Abaqus

Posted by Nikolaos Mavrodontis on Aug 6, 2018 5:04:11 PM

In this blog post we will be discussing about the symmetric model generation feature that is incorporated in Abaqus. This feature is targeted towards reducing the solution time needed for an analysis. We will first present the supported features and limitations, followed by an exemplary analysis of a flanged connection wherein this feature can be used.

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Topics: Abaqus, symmetric model

About our FEA Blog:

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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