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Simuleon FEA Blog

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

Options to adapt the mesh in Abaqus: an overview

Posted by Christine Obbink-Huizer on Jul 31, 2019 12:30:00 PM

There are different options to adapt the mesh in Abaqus: ALE adaptive meshing, adaptive remeshing and mesh-to-mesh solution mapping. It can be difficult to keep them apart, so in this blog, I’ll give an overview of what they are and what their purpose is. I’ll start with a summary table and then go into more details.

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Topics: Abaqus, adaptive remeshing, ALE adaptive meshing, mesh-to-mesh-solution mapping

Introduction to XFlow CFD - Join our XFlow Workshop - 30 August 2019

Posted by Dolf Broekaart on Jul 16, 2019 9:31:00 AM

Simuleon will give another unique workshop, called "Introduction to XFlow CFD".

Our classroom style workshop will be held in English language at our office location in 's-Hertogenbosch, the Netherlands. This is the ideal way to understand and try-out, what advanced CFD simulation, with SIMULIA XFlow CFD can offer.

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Topics: XFlow CFD, Computational Fluid Dynamics, Flow Simulation, High fidelity CFD, lattice boltzmann

Join our online webinar: Advanced Contact using Abaqus

Posted by Dolf Broekaart on Jul 9, 2019 8:51:00 AM

Sometimes you may wish to simulate a process where various parts interact with one another. In such cases it is often impossible to rely on predefined loads and boundary conditions since the exact points of contact are dependent on the solution.

Including contact in your simulation can be a more realistic way to represent loadings.

Abaqus provides a wide range of mechanical models and numerical methods for contact. We will begin this month's webinar with an overview of these capabilities, considering how to select the best options for a given problem.

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Topics: Abaqus, Abaqus advanced contact, contact analysis

Join our online webinar: Residual Stress and Springback using Abaqus

Posted by Dolf Broekaart on Jun 25, 2019 8:45:10 AM

In this month’s webinar we will be covering residual stress and springback. We will look at their definition and implications on FEA, how to deal with springback efficiently in Abaqus and the transfer of residual stresses and deformed parts between Abaqus steps and solvers.

Often the forming of metallic parts involves large quasi-static deformations and multiple sources of non-linearity. Processes such as these are regularly analysed using Abaqus/Explicit. This has implications when the aim is to model the forming process and determine the final deformed shape of a component.

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Topics: Abaqus, ringing, residual stress, springback, metal forming

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

Multiscale modelling of a concrete-steel composite using the Abaqus RVE micromechanics plugin

Posted by Christine Obbink-Huizer on Jun 11, 2019 9:58:25 AM

Many material that are used nowadays are composites: they consist of more than one material. To simulate a composite, different approaches can be taken at different length scales.

On the micro scale, a detailed model of all materials with their geometries and interaction can be made. This provides insight into the behavior of the combined material, but it can be difficult to determine boundary conditions that match realistic situations.

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Topics: Abaqus, Micromechanics, RVE, plugin

Join our online webinar: Coupled thermal-stress analysis using Abaqus

Posted by Dolf Broekaart on May 27, 2019 4:18:15 PM

The next in the webinar series will cover sequential and fully coupled thermal-stress analyses using Abaqus. 

The three modes of heat transfer, conduction, convection and radiation will be covered, along with how these are defined in CAE.

Frequently a thermal analysis is coupled to a stress analysis in order to determine the impact of thermal loading on the structural behaviour.  If the structural behaviour will not influence the thermal behaviour, a sequential analysis approach can be adopted, but if the thermal behaviour is coupled to the structural behaviour, a fully coupled thermal/stress analysis is required.  This webinar will cover how both forms of analyses are performed.

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Topics: Abaqus, thermal-stress, thermal-structural, conduction, convection, radiation

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

Join our "Introduction to Isight Training Course - 16 & 17 May

Posted by Dolf Broekaart on Apr 30, 2019 9:30:18 AM

At the 16th & 17th of May 2019, Simuleon will hold a 2-day classroom training at our location in 's-Hertogenbosch, The Netherlands. The training is called "Introduction to Isight Training Course"

Isight is a Process Integration and Design Optimization ( PIDO ) software framework, which enables various applications to be easily integrated. With Isight you can create flexible simulation process flows to automate the exploration of design alternatives and identification of optimal performance parameters.

This course comprehensively covers the Design and Runtime Gateways along with several fundamental components, exposing users to the ways in which a workflow can be built in Isight and the ways in which the design space can be explored.

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Topics: introduction to Isight Training, automated workflows, design of experiments, monte carlo, six sigma

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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