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  1. 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...

  2. 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...

  3. 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...

  4. Puck Failure Criteria

    31 Jul 2017

    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...

  5. 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. 

  6. 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...

  7. 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...

  8. 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...

  9. The Mission, Vision and Programs of the Composites Design and Manufacturing HUB

    08 Oct 2014 | Teaching Materials

    The presentation outlines the mission, vision and programs of the Composites Design and Manufacturing HUB as of October 2014.

  10. Composite Materials and Structures 1972-2012: Grand Challenges

    19 Sep 2014 | Teaching Materials

    Professor R. Byron Pipes presents the Grand Challenges for Composite Materials for the next 40 years at the American Society of Composites Conference in Arlington, TX on October 2, 2012.

  11. 2013 Composites Design and Manufacturing HUB Kickoff Workshop

    04 Sep 2014 | Series

    The Composites Design and Manufacturing HUB held a kick-off workshop at Purdue University on May 29-30, 2013 with over 100 attendees from industry, academia and government.  Select presentations from the workshop are included in this series.

  12. HyperSizer Pro Software from Collier Research

    20 Aug 2014 | Tool Information

    HyperSizer® is Design, Analysis, and Optimization Software for Composite and Metallic Structures HyperSizer is used throughout the design process--including certification--to quantify all critical failure modes, reduce structural weight, and sequence composite laminates for fabrication to...

  13. Announcement for the 2014 Composites Design, Analysis and Manufacturing Workshop

    27 Jun 2014 | Teaching Materials

    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...

  14. Interlaminar Stresses in Symmetric Angle-Ply Laminates Subjected to Anticlastic Bending Deformation

    04 Jun 2014 | Tool Information

    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...

  15. Free-Edge Elasticity Solution: Tool Taxonomy and Evaluation

    22 May 2014 | White Papers/Research Documents

    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...

  16. Effective Lamina and Laminate Properties

    22 May 2013 | Tools

    Calculate effective lamina and laminate properties from phase properties and layup.

  17. Classical Laminate Plate Theory

    22 May 2013 | Tools

    Prediction of stresses and strains in a laminated plate of infinite in-plane dimensions. Allows for application of thermal and edge loads.

  18. Halpin-Tsai Micromechanics Model

    22 May 2013 | Tools

    Calculate homogenized lamina properties from fiber and matrix properties

  19. Free Edge Elasticity Solution

    22 May 2013 | Tools

    Simulate stress, strain and displacements in an composite angle-ply laminate subjected to uniform axial extension, anticlastic curvature and thermoelastic deformation.