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Adaptive Multi-Scale & Multi-Fidelity Progressive Failure Analysis of Composites
14 Nov 2022
Although high-fidelity modeling of progressive damage has advanced our understanding of failure mechanisms in fibre-reinforced composites, such techniques are currently still too computationally intensive for direct application to composite structures. The multi-scale nature of damage in...
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Practical Developments in Multiscale Modeling of Composites
07 Apr 2021
Validated models (be they data driven or physics based) can accelerate the design, certification, and ultimate deployment of novel materials and structures by allowing rapid iteration and virtual experimentation while at the same time minimizing the need for expensive and time consuming physical...
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VABS: Modeling Composite Beam-like Structures with 3D FEA Fidelity
06 Feb 2021 | Contributor(s): Nikki Huang
This presentation was given at Altair Virtual ATCx Composites: https://atcxcomposites.virtual.altair.com/. Variational asymptotic beam section (VABS) is a unique technology continuously funded by the US Army since 1988 and it has become a tool of choice in the helicopter and wind turbine...
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iVABS
19 Nov 2020 | Contributor(s): Nikki Huang
iVABS (namely integrated VABS), is a design framework for composite slender structures (also called composite beams) such as helicopter rotor blades, wind turbine blades, high aspect ratio wings, bridges, shafts, etc. This framework bundles PreVABS, VABS, GEBT, Dakota, along with msgpi for...
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MSC.Patran/Nastran-SwiftComp GUI
01 Apr 2019
A graphical user interface (GUI) has been developed to integrate SwiftComp into MSC.Patran/Nastran for constitutive modeling and providing the automated conversion of the MSG plate and beam stiffness matrix into MSC.Nastran shell and beam element properties and materials. In order to reduce...
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PreVABS
16 Nov 2017 | Contributor(s): Nikki Huang
PreVABS is a pre-processing tool for VABS and SwiftComp. This tool is designed to reduce the workload of preparing input files of beam cross sections for VABS and SwiftComp, and to make the process automatic for the design and optimization purpose. Cross sections with general and...
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Composite Stiffness Property Prediction
07 Aug 2017
Micromechanical models for the composite axial tensile, transverse tensile, and axial shear are combined into one tool with the objective of comparing their effectiveness as property prediction methods. Rule of mixtures models (ROM) and the composite cylinder model (CCM) results for...
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Woven fabrics UMAT- a coupled material model
02 Aug 2017 | Contributor(s): Ali Roumani
One of the advantages of woven fabrics over unidirectional prepregs is their superior formability thanks to the large shear deformation capability. There exists, however, a limit on the shear deformation of woven fabrics, namely the wrinkling. Applying tension to delay wrinkling during forming...
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Finite element unit cell model based on ABAQUS for fiber reinforced composites
26 Jul 2017
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Micromechanical investigations of polymer matrix composites with shape memory alloy reinforcement
18 Jul 2017
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Numerical characterization of effective fully coupled thermo-electro-magneto-viscoelastic-plastic response of smart composites
18 Jul 2017
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Computational evaluation of effective stress relaxation behavior of polymer composites
11 Jul 2017
This paper presents a micromechanics model to characterize the effective stress relaxationstiffness of polymer composites. The linear viscoelastic behavior of polymer material wasmodeled by hereditary integral. The proposed model was established based on thevariational asymptotic method for unit...
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MUL2-UC Beam modeling of periodically heterogeneous composites
13 Jun 2017
The micromechanics code MUL2-UC is developed to work as an efficient and high-fidelity tool for the computation of the effective stiffness matrix and the recovering of the local fields of periodically heterogeneous composite structures. The main novelty is that higher-order beam theories are...
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VABS: Powering Simple Beam Elements with Detailed 3D FEA Fidelity
06 Jan 2017 | Contributor(s): Nikki Huang
This presentation gives a brief introduction to VABS, a general-purpose cross-sectional analysis, which can power conventional, simple beam elements with detailed 3D FEA fidelity.
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TexGen4SC Tutorial #1: Homogenization Analysis of Textile Composites with Arbitrary Inter-ply Shifts
03 Jan 2017
This tutorial shows how to use TexGen4SC to perform homogenization analysis of textile composites with arbitrary inter-ply shifts. A companion video is available on YouTube. TexGen4SC can be launched directly from https://cdmhub.org/tools/texgen4sc. A python script for the...
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TexGen4SC
14 Feb 2014 | Tools
Modeling of woven fabric composites generated by TexGen using SwiftComp
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Demystifying Composites Simulation for Performance
08 Sep 2024 | Downloads | Contributor(s): Ali Roumani
The presentation given in IACMI Tutorial session before the 2016 Summer Members Meeting. It tried to explain in layman terms modeling and simulation, and composites, pointed out the barriers we need to overcome to reap full benefits of simulation for composites innovation.
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Mechanics of Structure Genome:Fill the Gap between Materials Genome and Structural Analysis
10 Oct 2013 | Downloads
This is the presentation given as a Purdue Solid Mechanics Seminar on 5/18/2016. It summarizes the most recent devleopments up to the time of presentation.
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A Unified Theory for Constitutive Modeling of Composites
14 Aug 2014 | Publications
A unified theory for multiscale constitutive modeling of composites is developed using the concept of structure genomes. Generalized from the concept of the representative volume element, a structure genome is defined as the smallest mathematical building block of a structure. Structure...
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2015 cdmHUB Workshop
14 Feb 2014 | Series
Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015. Both lectures slides and lecture videos are presented.