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VAMUCH
 
A General-purpose Micromechanics Code
 
 
            
 
Target Applications

  1. Homogenization of heterogeneous materials
  2. Multiscale modeling of composite structures
  3. Layered composites/bindary composites
  4. Fiber Reinforced Materials
  5. Particle Reinforced Materials
  6. Multiphysics micromechanics analysis of composites with fully- coupled elastic, thermal, electric, and magnetic behavior
  7. Nonlinear behavior of composites 

Introduction

 

 

Variational Asymptotical Method for Unit Cell Homogenization (VAMUCH) is a finite element-based, general-purpose micromechanics code to perform homogenization of heterogeneous materials based on the variational asymptotic method. It can be used to calculate the effective fully-coupled, multipysical material properties, including thermal, elastic,  electric and magnetic) for arbitrary heterogeneous materials with arbitrary microstructure providing a unit cell (UC), or a representative volumen element (RVE), can be identified. The heterogeneous material could compose of arbitrary number of constituents having full anisotropy. VAMUCH calculates the complete set of material properties within in one analysis. If needed, VAMUCH can also recover the multiphysical fields  within the microstructure. In comparison to the state-of-the-art tools for predicting properties of heterogenous materials, VAMUCH has the following unique features which are discussed in the following two documents.

  • VAMUCH vs Mathematical Homogenization Theory and FEM-based Micromechanics Approaches (pdf)
  • VAMUCH vs Method of Cells (MOC) based method(GMC/HFGMC/ ECM) (pdf)

 

 

VAMUCH Documentation

Typical Examples

  1. Binary composites
  2. Fiber reinforced composites
  3. Particle reinforced composites
  4. Stress distribution of Eshelby problem
  5. Thermoelastic Micromechanical Analysis

Want To Try?

Please send the request to Prof. Wenbin Yu at Utah State University with a brief introduction of yourself (including your name, organization, highest degree obtained or seeking)  and a short motivation of wanting to have this program and which operating system (such as win32, Mac OS, linux and etc.)  you are using. Your request will be answered as soon as possible. Please notice that redistribution of VAMUCH is not allowed. The code is copyrighted by Utah State University and  all rights reserved.

  

VAMUCH FAQ and Tech Support
 
To streamline the Tech support for the code and theory, a Google Group HiFi-Comp is established so that VAMUCH users can help answer each other's questions and same/similar questions will not be asked more than once. I will constantly visit the forum to address questions not answered or answered wrong. If you have an urgent question need to be resolved sooner, please post the question on the group first, then send me an email to let me know the urgency. Please click here to register. VAMUCH related messages should be posted in the HiFi-Comp Google Group.
 

Acknowledgement

 

Development of VAMUCH was initiated by  support of the National Science Foundation under Grant DMI-0522908. Later it was supported by the State of Utah Community/University Research Initiative Grant. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsement, either expressed or implied, of the funding agencies.