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Initial failure strength prediction of woven composites using a new yarn failure criterion constructed by deep learning
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05 Jun 2019 | Contributor(s): Xin Liu, Federico Gasco, Johnathan Goodsell, Wenbin Yu
A new failure criterion for fiber tows (i.e. yarns) is developed based on a micromechanical model using mechanics of structure genome (MSG) and deep learning neural network. The proposed failure criterion can be applied to yarns in mesoscale textile composites modeling while capturing the failure...
A Unified Approach for Thermoelastic Constitutive Modeling of Composite Structures
07 Feb 2019 | Contributor(s): Xin Liu, Wenbin Yu, Federico Gasco, Johnathan Goodsell
Mechanics of structure genome (MSG) has been extended to provide a unified approach to predict the thermoelastic behaviors of composite structures. The variational statement of the MSG models has been modified to capture pointwise temperature distribution in composite structures. The effective...
Injection Overmolding Manufacturing Process Simulation
29 Jun 2017 | Online Presentations | Contributor(s): Johnathan Goodsell
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...
The Best 3D Properties of Composite Laminates
17 Nov 2016 | Downloads | Contributor(s): Orzuri Rique Garaizar, Johnathan Goodsell, Wenbin Yu, Byron Pipes
This presentation is given on ASME IMECE 2016 in Phoenix Arizona. Because composite layers are usually very thin (in the order of hundreds of microns), real composites part are usually made of dozens of or even hundreds of layers. It is difficult to provide a layer by layer modeling of...
Generalized Free Edge Stress Analysis Using Mechanics of Structure Genome
17 Nov 2016 | Downloads | Contributor(s): Bo Peng, Lingxuan Zhou, Johnathan Goodsell, Byron Pipes, Wenbin Yu
This presentation is given on ASME 2016 IMECE in Phoenix Arizona. The free-edge effect states that in the vicinity of the interfaces and the free edges of composite laminates, 3D singular stress concentrations may occur due to different layup angles in the adjacent layers of the laminate....
cdmHUB.org: A Platform for Pervasive Composites Learning in the Cloud
17 Nov 2016 | Downloads | Contributor(s): Wenbin Yu, Johnathan Goodsell, Byron Pipes
This is the presentation given on ASME 2016 IMECE in Phoenix Arizona. Purdue University has launched the Composites Design and Manufacturing HUB (cdmHUB.org) as an collaborative web interface platform with the mission to convene the composites community to advance certification by...
Generalized Free-Edge Stress Analysis Using Mechanics of Structure Genome
22 Aug 2016 | Publications | Contributor(s): Bo Peng, Johnathan Goodsell, Byron Pipes, Wenbin Yu
This work reveals the potential of mechanics of structure genome (MSG) for the free-edge stress analysis of composite laminates. First, the cross-sectional analysis specialized from MSG is formulated for solving a generalized free-edge problem of composite laminates. Then, MSG and the companion...
Orthotropic Stress Concentration Factor
16 Aug 2016 | Tools | Contributor(s): Johnathan Goodsell
Calculates the stress concentration factor for a circular hole in an infinite orthotropic plate
2015 cdmHUB Workshop
05 Jan 2016 | Series | Contributor(s): Johnathan Goodsell
Composites Design, Analysis and Manufacturing Workshop held at Purdue University on November 3-5, 2015. Both lectures slides and lecture videos are presented.
Chapter 7 Solutions
16 Jul 2015 | Teaching Materials | Contributor(s): Johnathan Goodsell
Micromechanics Simulation Challenge Level I Results
30 Jun 2015 | Publications | Contributor(s): Andrew J Ritchey, Hamsasew Sertse, Johnathan Goodsell, Wenbin Yu, Byron Pipes
The initial results of level I of micromechanics simulation challenge were documented in the attached paper which is also included in the proceedings of American Society of Composites 30th Annual Technical Meeting at Michigan State. Results for various composites including fiber...
Autocatalytic Degree of Cure
01 May 2015 | Tools | Contributor(s): Matthew James Prall, Johnathan Goodsell
Calculates degree of cure based on time-temperature profile and autocatalytic cure model with Arrhenius rate-dependence
Composites Characterization Overview
16 Apr 2015 | Online Presentations | Contributor(s): Johnathan Goodsell
An overview of characterization methods for continuous fiber composite materials, including tensile, shear and flexural testing, open-hole and fracture, and fiber volume fraction measurement; data reduction for orthotropic material property determination.
Micromechanics Simulation Challenge - Level 1
26 Jan 2015 | White Papers/Research Documents | Contributor(s): Johnathan Goodsell, Andrew J Ritchey, Wenbin Yu
In cooperation with academia, industry and commercial software providers, the Composites Design and Manufacturing HUB is pleased to announce the Micromechanics Simulation Challenge. The problems in Level 1 of the simulation challenge are attached. Additionally, stp and iges files of the complex...
Fiber Spacing and Volume Fraction
07 Nov 2014 | Tools | Contributor(s): Kyle, Johnathan Goodsell
Calculates Fiber Volume Fraction based on fiber spacing for square array and hexagonal array geometries.
DiBenedetto Equation: Tg and DOC
30 Oct 2014 | Tools | Contributor(s): Johnathan Goodsell, Matthew James Prall
DiBenedetto Equation: Glass Transition Temperature Dependence on Degree of Cure
The Mission, Vision and Programs of the Composites Design and Manufacturing HUB
08 Oct 2014 | Teaching Materials | Contributor(s): Johnathan Goodsell, Byron Pipes, Wenbin Yu
The presentation outlines the mission, vision and programs of the Composites Design and Manufacturing HUB as of October 2014.
Plane-Stress Compliance Transform
25 Sep 2014 | Tools | Contributor(s): Johnathan Goodsell
Transforms 2D compliance terms by rotation about the 3-axis
Micromechanics Simulation Challenge (Draft)
19 Sep 2014 | White Papers/Research Documents | Contributor(s): Johnathan Goodsell, Wenbin Yu, Byron Pipes
The cdmHUB is hosting a Micromechanics Simulation Challenge and we would like to invite the composites community to participate in defining and executing the challenge. The Micromechanics Simulation Challenge will consist of 3 levels, each with benchmark-type problems to assess the strengths and...
Composites Characterization
06 Aug 2014 | Teaching Materials | Contributor(s): Johnathan Goodsell
These slides are the lecture on composites characterization at the 2014 Composites Design, Manufacturing and Analysis workshop. Fiber volume fraction measurements, in-plane elastic and strength properties, flexural and open-hole testing, measurement of CTEs and Mode I and Mode II strain energy...
Lamina Analysis
30 Jul 2014 | Teaching Materials | Contributor(s): Johnathan Goodsell
This lecture is slides for Wednesday covering fundamentals of lamina analysis, including elastic constants, experimental testing, anisotropic elasticity, stress-strain relations, plane-stress relations, elastic moduli predictions, strength predictions and comparison with experiments.
Off-Axis Lamina Moduli and Strength
24 Jul 2014 | Tools | Contributor(s): Johnathan Goodsell
Transform lamina moduli and strength to off-axis orientation
Announcement for the 2014 Composites Design, Analysis and Manufacturing Workshop
27 Jun 2014 | Teaching Materials | Contributor(s): Johnathan Goodsell
Flyer announcement for the 2014 Composites Design, Analysis and Manufacturing Workshop to be held at Purdue University, August 5-7, 2014.The Composites Design and Manufacturing HUB is holding a hands-on workshop in composites design, analysis and manufacturing. Join us at Purdue University on...
Interlaminar Stresses in Symmetric Angle-Ply Laminates Subjected to Anticlastic Bending Deformation
04 Jun 2014 | Tool Information | Contributor(s): Johnathan Goodsell
The aim of the present work is to develop a solution for the interlaminar stress field in a symmetric and balanced, angle-ply laminate subjected to anticlastic bending deformation. Further, this class of problems is considered in order to elucidate the behavior of angle-ply laminates...
Free-Edge Elasticity Solution: Tool Taxonomy and Evaluation
22 May 2014 | White Papers/Research Documents | Contributor(s): Johnathan Goodsell
A review of the free-edge elasticity solution tool, including tool taxonomy and evaluation. An overview of the solution development is provided, followed by numerous examples of tool use and evaluation. The document concludes with an evaluation of the tool maturity level. The...