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Rheology of Carbon Fiber Thermoplastic Polymer Composites
26 Apr 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
The rheology of fiber–reinforced thermoplastic composites will be presented with specific focus on several topics studied over the past three decades. Interest in the elongational viscosity of collimated, discontinuous fiber systems was initiated by the introduction of impregnated,...
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Practical Developments in Multiscale Modeling of Composites
07 Apr 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
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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Recent Developments in Computational Approaches to Model Laminated Composite Shells and Damage and Fracture in Solids
16 Feb 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
In this lecture, two different topics of considerable interest to composite materials and structural mechanics communities are discussed. The first topic deals with the development of locking-free shell finite elements with thickness stretch for the nonlinear analysis of isotropic and laminated...
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VABS: Modeling Composite Beam-like Structures with 3D FEA Fidelity
06 Feb 2021 | Online Presentations | 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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Novel Powder Epoxy Composites for Thick-Section Structures
25 Jan 2021 | Online Presentations | Contributor(s): Johnathan Goodsell
This seminar discusses the ongoing work at The University of Edinburgh on the processing, design and testing of thicksection composites for industrial structures such as large wind and tidal turbine blades, via powder epoxy resin systems. Thick-section composite parts are difficult to manufacture...
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Emerging Role of Process Models & Simulations in Composites Manufacturing
07 Dec 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
This talk will highlight the ever increasing benefits of process modeling in Composite Manufacturing processes. First, the use of science base approach of materials processing, which integrates material parameters with transport phenomena at various scales during manufacturing to create...
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The Challenges of Determining the Strength of Composites
24 Nov 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
Why are there such large differences in reported strengths of composites? Some of the reasons are the definition of strength, material variability, poor test methods, and subtle variations in carrying out the tests. But there are other important factors that affect strength that are not...
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iVABS
19 Nov 2020 | Downloads | 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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Automating the Lay-up of Geometrically Complex Composite Structures Made from Preimpregnated Reinforcements: a Route to a Roadmap
04 Nov 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
A significant amount of research and industrial effort has been expended on the development of equipment such as automated fibre placement machines to lay-up prepregged reinforcements into structures of relatively simple geometry such as wing skins and spars, and fuselage structures. These...
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Defect Coupling Predicting the Strength and Life of Fiberous Composite Laminates
16 Oct 2020 | Online Presentations | Contributor(s): Johnathan Goodsell
After more than 30 years of careful experimental investigation and exhaustive development of discrete damage analysis methods including integrated computational mechanics methods, our community knows a great deal about how discrete defects such as matrix cracks and defect growth (e.g....
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Global Composites Experts Webinar Series
12 Aug 2020 | Series | Contributor(s): Johnathan Goodsell
The webinars examine the history, present capabilities, and future of composites science and technology. The goal of the series is to accumulate the vast knowledge of composites that has been developed over the past 50 years and to make it available to the global composites community. Each...
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VUMAT of a Generalized Standard Continuum Damage Model
13 Apr 2018 | Downloads
Based on a recently developed generalized standard continuum damage model (CDM), this VUMAT user subroutine provides a rigorous and robust framework for implementing various damage behavior into 2D or 3D solid elements in a finite element analysis (FEA). It is designed to be used with...
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PreVABS
16 Nov 2017 | Downloads | 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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Woven fabrics UMAT- a coupled material model
02 Aug 2017 | Downloads
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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Puck Failure Criteria
31 Jul 2017 | Downloads
Composite materials have been established as competitive materials during the last few decades due to their high strength to l ow weight ratio among other advantages and are widely used in many industries. A recent study has found that the industrial usage of composite failure...
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Forming simulation using PAM-FORM, AniForm, LS-DYNA, and ABAQUS
18 Jul 2017 | Animations
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Injection Overmolding Manufacturing Process Simulation
29 Jun 2017 | Online Presentations
Injection over-molding or hybrid molding is a high-rate composites manufacturing process for fabrication of structural components with complex geometries. The structural backbone is provided by a continuous-fiber woven prepreg while the geometric complexity is realized via injection...
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VABS: Powering Simple Beam Elements with Detailed 3D FEA Fidelity
06 Jan 2017 | Downloads | 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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2016 cdmHUB ASC Workshop
01 Sep 2016 | Series
Join us at the American Society for Composites 31st Technical Conference (http://mech.utah.edu/ASC2016/) for a hands-on workshop, on September 18, from 7:00–9:00pm, on how to use cdmHUB.org for composites learning, teaching, and research in the cloud. With the mission to convene the...
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ABAQUS-SwiftComp GUI
19 May 2016 | Downloads
This resource contains the download of the release package of ABAQUS-SwiftComp GUI. Please be advised that what you download is the GUI only, you have to fill the form at http://analyswift.com/software-trial/ to request SwiftComp from AnalySwift LLC for performing the...