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...

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...

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...

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...

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...

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. 

Orthotropic Stress Concentration Factor

25 Sep 2014 | Tools

Calculates the stress concentration factor for a circular hole in an infinite orthotropic plate

2015 cdmHUB Workshop

23 Jul 2014 | Series

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

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...

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...

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...

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.

Plane-Stress Compliance Transform

25 Sep 2014 | Tools

Transforms 2D compliance terms by rotation about the 3-axis

Keith Kedward and Composites Design (Slides)

23 Jul 2014 | Teaching Materials

Professor Byron Pipes' slides from the 2014 ASC meeting at UCSD discussing Keith Kedward and Composites Design

Keith Kedward and Composites Design (Recorded Talk)

23 Jul 2014 | Teaching Materials

Professor Byron Pipes speaks at the 2014 ASC Conference at UCSD in tribute to Keith Kedward on the subject of Composites Design.

Composite Materials and Structures 1972-2012: Grand Challenges

23 Jul 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.

2013 Composites Design and Manufacturing HUB Kickoff Workshop

23 Jul 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.

HyperSizer Pro Software from Collier Research

23 Jul 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...