A Code for Flexural Analysis of Thin-Walled Composite I-Beams with Sandwich Web and Bond-lines

02 Aug 2017 | Contributor(s): Mo E. Asl

Composite I-beams have extensive applications in the aerospace industry, construction and light-weight engineering structures. In the utility-scale wind turbine blades, the spar-caps and the shear web compose an I-beam structure which is referred to as the backbone of the blade carrying the...

Puck Failure Criteria

31 Jul 2017 | Contributor(s): karan kodagali

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...

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

26 Jul 2017 | Contributor(s): Tian Tang

Variational asymptotic micromechanics modeling of heterogeneous piezoelectric materials

24 Jul 2017 | Contributor(s): Tian Tang, Wenbin Yu

In this paper, a new micromechanics model is developed to predict the effective propertiesand local fields of heterogeneous piezoelectric materials using the variational asymptoticmethod for unit cell homogenization (VAMUCH), a recently developed micromechanicsmodeling technique. Starting from...

Composites themoforming simulation using PAM-FORM-An example

24 Jul 2017 | Contributor(s): Tian Tang

An example showing the simulation of thermoforming composite ply using PAM-FORM. The videos of the evolutions of shear angle and temperature distribution of the composite ply during forming process are demonstrated.

Micromechanical investigations of polymer matrix composites with shape memory alloy reinforcement

18 Jul 2017 | Contributor(s): Tian Tang

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

18 Jul 2017 | Contributor(s): Tian Tang

Forming simulation using PAM-FORM, AniForm, LS-DYNA, and ABAQUS

18 Jul 2017 | Contributor(s): Tian Tang

Computational evaluation of effective stress relaxation behavior of polymer composites

11 Jul 2017 | Contributor(s): Tian Tang, Sergio D. Felicelli

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...

Abaqus plugins for Nonlinear Acoustics

06 Jul 2017 | Contributor(s): A.K. Singh, V.B.C. Tan, T.E. Tay, H.P. Lee

This paper introduces generalized tools in the form of plugins for a commonly used commercial finite element package Abaqus/Standard to model the nonlinear acoustic methods for detection of delamination damage in composite laminates. The nonlinear acoustic methods typically involve exciting a...

Randomization algorithm for the micromechanical modeling of fiber-reinforced Polymer Matrix Composites

02 Jul 2017 | Contributor(s): Eric Jason Carey, Marianna Maiaru

Polymer Matrix Composites (PMCs) are replacing metallic materials in many engineering fields such as aerospace, naval and mechanical engineering. Failure in PMCs can happen due to matrix cracking, fiber failure, fiber/matrix debonding and delamination. Performing damage and failure analysis...

Python and fortran script to create Abaqus input file for discretized addition of material in additive manufacturing (3D printing)

01 Jul 2017 | Contributor(s): VINAY DAMODARAN

In additive manufacturing, especially, fused deposition modeling, material is continuously added over a print substrate. To simulate the process in finite element analysis, a discretized approach is used where finite number of blocks are added to the domain to simulate material addition. In the...

Experimental Data Processing

01 Jul 2017 | Contributor(s): LOUKHAM SHYAMSUNDER, Subramaniam Rajan

Finite element models are being actively developed to model composite systems. One such is the MAT213 material model implemented into LS-DYNA [1,2]. MAT213 is an orthotropic material model with three distinct components - elastic-inelastic deformation, damage and failure. The model is driven by a...

A User Material Subroutine for Implementing Anisotropic Hyperelastic Model of Fiber-Reinforced Rubbers

01 Jul 2017 | Contributor(s): Rui Li

This code is a user subroutine written in FORTRAN that can be implemented in the commercial finite element software ABAQUS (version 6.14) to model the constitutive behavior of knitted fiber reinforced rubbers. Currently, this code can be used to simulate the anisotropic hyperelastic response of a...

Random Fiber/Matrix Model Generator

01 Jul 2017 | Contributor(s): Micheal Keith Ballard

A tool for the creation of 2D fiber/matrix models that have a random arrangement of fibers.  It can create a random representative volume element of a fiber/matrix microstructure that has both a periodic mesh and geometry, allowing convenient application of periodic boundary conditions...

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...

Forming simulation using ABAQUS fabric material model

29 Jun 2017 | Animations | Contributor(s): Tian Tang

Generating Representative Volume Element (RVE) for Finite Element Analysis of Random Fiber Composites/Nanocomposites

29 Jun 2017 | Downloads | Contributor(s): Rajni Chahal, Ashfaq Adnan, Ajit Roy

      Typical electronics packages are assembled by integrating various parts on printed circuit boards (PCB). Traditional interconnect materials in electronics packages are not suitable for DoD electronics because in many DoD extremely transient conditions, mechanical failures of...

MUL2-UC Beam modeling of periodically heterogeneous composites

13 Jun 2017 | Downloads | Contributor(s): Alberto Garcia de Miguel

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...

VABS: Powering Simple Beam Elements with Detailed 3D FEA Fidelity

06 Jan 2017 | Downloads | Contributor(s): Wenbin Yu

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.