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,...

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...

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...

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...

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...

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...

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...

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....

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...

Composite Stiffness Property Prediction

07 Aug 2017 | Downloads

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...

Finite element unit cell model based on ABAQUS for fiber reinforced composites

26 Jul 2017 | Downloads

Micromechanical investigations of polymer matrix composites with shape memory alloy reinforcement

18 Jul 2017 | Publications

Numerical characterization of effective fully coupled thermo-electro-magneto-viscoelastic-plastic response of smart composites

18 Jul 2017 | Publications

Computational evaluation of effective stress relaxation behavior of polymer composites

11 Jul 2017 | Publications

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...

MUL2-UC Beam modeling of periodically heterogeneous composites

13 Jun 2017 | Downloads

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...

Mechanics of Structure Genome:Fill the Gap between Materials Genome and Structural Analysis

18 May 2016 | 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. 

2015 cdmHUB Workshop

05 Jan 2016 | Series

Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015.  Both lectures slides and lecture videos are presented.

Presentation of Micromechanics Simulation Challenge Level I Initial Results

04 Aug 2015 | Downloads

The attached slides summarize the Micromechanics Simulation Challenge Level I Initial Results in a presentation format. The complete report can be found at https://cdmhub.org/resources/948, and all the files supporting the results can be found...

Skill of Using Surface Element in ANSYS

26 Mar 2015 | Downloads

Dear All, For those ANSYS users, please check the attached skill of using surface element, “Surface_Effect_Elements.pdf”, to apply the surface tangent traction. It works well for homogenization simulations, and also for some beams structure validations. This attached zip file also...

Structure Genome: Fill the Gap between Materials Genome and Structural Analysis

29 Nov 2014 | Publications

A new concept, Structure Genome (SG), is proposed to fill the gap between materials genome and structural analysis. SG acts as the basic building block of the structure connecting materials to structures and the mechanics of SG governs the necessary information to link materials genome and...