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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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Constitutive modeling for time- and temperature-dependent behavior of composites
08 Jan 2020
Structural integrity, durability, and thermal stability represent critical areas for adequately modeling the behavior of composite materials. Polymeric matrices are prone to have time-dependent behavior very sensitive to changes in temperature that influence the effective properties of the...
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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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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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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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Orthotropic Stress Concentration Factor
25 Sep 2014 | Tools
Calculates the stress concentration factor for a circular hole in an infinite orthotropic plate
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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...
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Analysis of Slender Structures Using Mechanics of Structure Genome and Open Source Codes
18 Apr 2016 | Publications
This is the Master thesis from Xin Liu in Prof Yu’s research group. In this thesis, the Mechanics of Structure Genome (MSG) has be used to provide an alternative way to model composite beam-like structures. Basic concept of MSG is introduced as well as the idea of how to carry out...
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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.
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ANSYS-VABS Graphic User Interface (GUI)
03 Aug 2015 | Downloads | Contributor(s): Nikki Huang
This resource contains the release package of ANSYS-VABS GUI.VABS code is NOT included. Manual and the source scripts for the interface can be found in the Supporting Documents.This GUI was developed based on ANSYS Release...
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ABAQUS-VABS GUI
29 Jun 2015 | Downloads
A Python script used to convert the input file generated by ABAQUS for VABS, a detailed step-by-step instruction using ABAQUS CAE to generate a simple beam section (composite anisotropic pipe) is also given. Python scripts for generating more complex sections such as real...
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ABAQUS-VABS GUI
29 Jun 2015 | Downloads | Contributor(s): Nikki Huang
A Python script used to convert the input file generated by ABAQUS for VABS, a detailed step-by-step instruction using ABAQUS CAE to generate a simple beam section (composite anisotropic pipe) is also given. Python scripts for generating more complex sections such as real...
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HyperSizer for Composites: Insanely Fast Laminate Optimization
31 Mar 2015 | Tool Information
95% of users, without user manual, and without instruction, will be able to import their FEM and produce optimum composites laminates that satisfy all analyses to all load cases within the first 10 minutes. Your automatically updated model will have minimum weight and fully producible laminates...
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A Critical Assessment of Computer Tools for Calculating Composites Wind Turbine Blade Properties
16 Mar 2015 | Publications | Contributor(s): Nikki Huang
The purpose of this paper is to critically assess several computer tools for calculating the inertial and structural properties of wind turbine blades. The theoretical foundation of each tool is briefly summarized, and the advantages and disadvantages of each tool are pointed out. Several...
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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...