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Fundamental discoveries in mechanics in recent decade or so

Submitted by Zhigang Suo on

A previous post, Getting Ready for Extreme Mechanics Letters, contained the following paragraph:

“We seek papers from researchers in all disciplines. Mechanics appeals to talents of all kinds. Good mechanics has long been created by people from many fields, by Galileo, Newton, Maxwell and Faraday, as well as by Watt, Darwin, Wright brothers and Whitesides. People make discoveries in mechanics often when doing something else (e.g., in seeking evidence for the existence of God, in building cathedrals, in flying airplanes, in laying transatlantic telegraph cables, in fabricating microprocessors, in watching cells move, in fracking for gas, in inventing optical tweezers, in creating soft lithography, in developing wearable or implantable electronics). Mechanics discovered in one field invariably finds applications in other fields.”

Here I would like to give several examples of papers published in recent decade or so. I will link each paper to its citations on Google Scholar, so that you can have an overview of the influence of the paper on other researchers.

Constitutive modeling of hyperelastic solids reinforced by spheroidal particles under large deformations

Submitted by rezaavaz on

This paper presents a homogenization-based constitutive model for the mechanical behavior of particle-reinforced elastomers with random microstructures subjected to finite deformations. The model is based on a recently developed homogenization method (Avazmohammadi and Ponte Castaneda 2013; J. Elasticity 112, 1828–1850) for two-phase, hyperelastic composites, and is able to directly account for the shape, orientation, and concentration of the particles.

Abaqus is not reporting any CEEQ in coupled temp-displacement step

Submitted by Soud Choudhury on

Hi all,

I am modeling a simple coupled temp-displecment analysis with the following step information:

** MATERIALS

** 

*Material, name=Material-1

*Conductivity

 1e-06,

*Creep, law=HYPERB

44000., 0.005,   4.2, 45000., 8.314

*Elastic

60000., 0.34

*Expansion, zero=25.

 1.4e-05,

*Plastic

20.,  0.

60., 0.1

** 

** PHYSICAL CONSTANTS

** 

*Physical Constants, absolute zero=-273., universal gas=8.314

** STEP: Step-1

XFEM ABAQUS Help

Submitted by toto324 on
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I am trying to run an XFEM analysis which consists of assembly of more than 20 instances. I am getting the error, ABAQUS CANNOT ALLOW MORE THAN 20  ENRICHMENT REGIONS IN ONE MODEL. Is there anything I could do? I need to define XFEM cracks (Special>Cracks>Crack Manager> Create > XFEM Crack )for all the 30 parts assembly.

 

Please assist.

stress at a point other than integration points in VUMAT/UMAT

Submitted by liebealt on

Hi all,

The question is how can the stress at a point other than integration points be evaluated in VUMAT/UMAT. Interpolation may be a general method. However, to me, it seems not so easy to be implemented, for I have no idea of the way to retrieve the necessary information of all integration points (their indexes, positions etc.) belongint to a identical FE. Any help would be appreciated.