# BoJing Zhu's blog

## Benchmark: 3D geometrical model established from 3D lattice Green function & lattice Boltzmann method and Blob 3D code

A 3D geometrical model which establish by 3D LG-LB code and Blob 3D is attached.  The results are very interesting!

To computing mechnics/physics, if the complex geometrical model can be established definited correcte! so many interesting work can be done to exploring the microstructure deformation_stress process under ULTP.

## One 3DLBM example: plastic creep simulation

A simple 3D D3Q27 lattice Boltzmann example for simulate the plastic creep simulation on the friction surface

## PostDoc Dissertation: Hybird wave time-domain hypersingular integral equation-lattice Boltzmann method to earthquake fault slip

PostDoc Dissertation:  Hybird wave time-domain hypersingular integral equation-lattice Boltzmann method to earthquake fault slip problem in the coseismic process under multi temporal-spatial scales and coupled electromagnetothermoforce fields in parallel CPU-GPU system

## A D3Q27 LBM MODEL FOR POROSITY COMPOSITES UNDER EMTE FILED

D3Q27 LBM MODEL IS VERY INTERESTING AND BEAUTIFUL, ALL DISTRIBUTION FUNCTION CAN BE REDUCED A SIMPLE FORMATION.

DISCUSSION?

HOW TO DEAL WITH THE INTERFACE FILM BETWEEN SOLID SKETCH PART AND FLUID PORE PART( THROGH FORCE OR THROUGH DISPLACEMENT).

:)

## A simple case: Extended pore stress for Reservoir/Earthquak problem

Extended pore stress for Zipingpu/Longmenshan fault silp

* download the file (case.pdf) and change name to case.wmv, then it can be open normally!

## Two cases about using 3D LBM code

Example 1: using LBM predicting rock physics propertiy under ultra-high temper and pressure condition

Example 2: using LBM analyze mantle convection

## Ludwig Boltzmann: the man who trusted atom(Chinese version)

One of the book may help us understand why Boltzmann can have so many new ideas (atom theory, statics mechanics and so on)

## A simple model for contact problem of different earth plate

A easy way to create contact FEM model by using NASA data and PB2002 data

## How to use ABAQUS deal with irregular interface problem?

As we know how to define the interface type is a key problem in ABAQUS.

But when the interface is not regular, can we find a convenient way to realize it?

## Fracture flow problem

Can we establish the relationship between density distributionfunction and dynamic stress intensity factors(J-integral)?

## Numerical simulation results(part1): fracture of multiphase micro flow

Numerical simulation results(part1): fracture  of multiphase micro flow

explanation:

For the 090*_consise.doc files, down load it and rename it to 090*_consise.avi, then you can open it with winplay

e.g 0903_consie.doc    0903_consise.avi

## Dynamic extended SIFs under P- and S-waves

Dynamic extended stress intensity factors near-fields radiation distribution for P- and S-waves at the 3D crack surface

## Nikolaos I.Ioakimidis _introduce hypersingular integral equations into 3D fracture mechanics

N.I.Ioakimidis.1982.Application of finite-part integrals to the singular integral equations of crack problems in plane and three-dimensional elasticity. Acta Mechanica.45. 31-47.

N.I.Ioakimidis.1983. A new singular integral equation for the classical crack problem in plane and antiplane elasticity. Int J fracture. 21. 115-122

## Analyze crack problem by ABAQUS/CAE_2

2.The Interaction module

## Analyze crack problem by ABAQUS/CAE_1

Analyze crack problem by ABAQUS/CAE

1.define a crack in ABAQUS/CAE

Ms. Ref. No.: XXXXX-D-07-00060
Title: XXXXXX

XXXXXXXXXX

Dear xxx XXX,

I regret to inform you that the reviewers of your manuscript have advised against publication, and I must therefore reject it.

Thank you for giving us the opportunity to consider your work.

Yours sincerely,

XXXXXXXXXXX, Professor
Associate Editor

XXXXXXXXXXXXX

## Smart composite detects and repairs airplane cracks

The New Scientist,Vol196,Issue 2624,6 October 2007,Page 32 Paul MarksThe composite material could make the next generation of aeroplanes safer by sensing and repairing cracks before they become critical A smart composite material that senses cracks as they develop and then repairs the damage could make the next generation of aeroplanes safer.

## Heisenberg Model and Ising Model

when we talk about magnetism, we use Ising Model or Heisenberg model

if possible can you give me some suggestion about these two model for (one dimensional, two dimensional)