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Simuleon FEA Blog

Adding translucency for enhanced post processing in Abaqus

Posted by Nikolaos Mavrodontis on Nov 11, 2019 4:59:31 PM

In this blog post, we will be discussing about the translucency feature, that is there to help us enhance the results presentation of our fe analyses from within Abaqus Visualization.

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Topics: Abaqus, postprocessing, translucency, visualization

7 tips when you are getting started with Abaqus python scripting

Posted by Christine Obbink-Huizer on Nov 5, 2019 9:30:15 AM

Lately, I’ve received a few questions related to python scripting. It is a nice way to add to the default Abaqus functionality and automate repetitive work. Here I want to give a few tips that may help when you are creating your first Abaqus python scripts.

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Topics: Abaqus, python, scripting, python scripting

Fatigue assessment of a bicycle frame done with Abaqus and Fe-Safe

Posted by Nikolaos Mavrodontis on Oct 8, 2019 9:41:00 AM

In this blog post, we will be showcasing a fatigue assessment of a bicycle frame. This fatigue assessment will be against certain cyclic loading scenarios. Cyclic loading scenarios, typical for bicycle manufacturers, can include, pedaling forces, horizontal forces acting on the front fork and vertical load acting on the seat post.

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Topics: Abaqus, fe-safe, fatigue, bike, frame

Join our online webinar: Simulation in Oil & Gas industry using Abaqus

Posted by Dolf Broekaart on Sep 23, 2019 2:18:11 PM

Problem solving and simulation within the Oil and Gas industry use approaches that are generally familiar to other more mainstream mechanical engineers, but often require the use of specific, often codified, processes and tools.

This webinar will look at some of the tools that are available within Abaqus that allow an in-depth insight into the behaviour of systems in ways which conform to accepted standards in Oil & Gas industry. These include:

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Topics: software, Abaqus, Oil & Gas

Abaqus ODB Extractor and Builder Tool (OEBT) Plug-in

Posted by Nikolaos Mavrodontis on Sep 17, 2019 9:40:00 AM

On many occasions, particularly when our model size is large or when automatically generated Field/History outputs are used by default, the resulting output database of an analysis can be of significant size. Typically (at least for quasi-statics, statics), the user is mainly interested in retaining the first and/or last frames of generated output, as the main focus is the final deformed configuration, when a loading has been fully ramped up (100% loading). Additionally, when automatically generated output requests are used, predefined default output variables are written in the results database, whereas the user might only have interest in von Mises stresses and resulting displacements in the model.

In this blog post, we will be showcasing the OEBT plug-in, that allows the user to select the specific results that they would like to keep, and populate them in a new results' database. 

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Topics: Abaqus, plug-in, ODB Extractor and Builder Plug-in

Use mesh-independent fasteners to simulate connection points in Abaqus

Posted by Christine Obbink-Huizer on Sep 9, 2019 10:30:38 AM

In short:

  • Mesh-independent fasteners couple layers of material to each other, simulating the effect of e.g. spot welds.
  • They don’t require the coupled region to be separated from other regions by a partition (mesh-independence), making them easy to define.
  • Instead their position is defined by attachment points, reference points or nodes.
  • It is possible to create patterns of attachments points, to easily define the location of multiple fasteners.
  • Fastener are defined from the interaction module, via “special”, “fasteners”, “create” or the “create fasteners” icon.
  • Rigid MPC fasteners are possible. The behavior of the fastener can also be defined via a connector section to allow more complex behavior.

 

 

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Topics: Abaqus, fasteners, connection points, connections, mesh independent fasteners

How to restart an Abaqus analysis

Posted by Christine Obbink-Huizer on Aug 23, 2019 2:45:17 PM

In short

  • Abaqus allows you to continue a previous analysis with a new analysis.
  • Restarting is only possible from increments for which restart files are available for the previous analysis.
  • These are requested before the previous analysis is run, from the step module, via “output” “restart requests”.
  • In the model attributes of the new analysis you can refer to the step of the previous job that should be used as starting point.
  • It is possible to continue an interrupted job as it was originally defined, or to add additional steps.
  • Because additional steps are a continuation of what was done before, it is not possible to include new geometry etc.
  • Select ‘restart’ as job type when running the restart analysis
  • The .odb of the restart analysis will only contain data of the newly simulated steps, so the output is split over two odb's.

 

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Topics: Abaqus, restart option, bolted pipe connection, bolt preloading, boltloads

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

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

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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