User login

You are here

BoJing Zhu's blog

BoJing Zhu's picture

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.

 

 

BoJing Zhu's picture

One 3DLBM example: plastic creep simulation

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

BoJing Zhu's picture

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

BoJing Zhu's picture

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).

 

 

 

 :)

 

 

 

BoJing Zhu's picture

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! 

 

BoJing Zhu's picture

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

BoJing Zhu's picture

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)

 

 

BoJing Zhu's picture

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

BoJing Zhu's picture

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?

BoJing Zhu's picture

Can we use constitutive relation at micro/macro scale to molecules scale ?

Hi, everyone

 

Now I meet a problem, wish can obtain you help.

 

Now i do some research on multi-compose particle materials (eg. pharmaceutical science  materials)___predict the compressibility, compactibility, flow properties and  breakage behavior.

as we know, the molecular scale at 0.1-70nm scale and crystal growth process at 0.1-100nm scale, can i use the constitutive relationship at micro(=~um)/macro to analyze the performance and structure at this scale.

 

thanks ! 

BoJing Zhu's picture

Comparison of intrapore velocities measured and simulated in the highly macro-porous biscayne aquifer

Using the data from 3D hybrid lattice boltzmann code under parallel environments, some interesting simulated results are obtained by using Tecplot.

Tips:

After download the attached files, please change files name from *.ppt to *.wmv, then they  can be display normally by media player  

BoJing Zhu's picture

Castigliano theorem_Strain energy method

PPT file for castigliano theorem(1st & 2nd)_Theory of structures 

BoJing Zhu's picture

Can we creat a new kind of "boundary condition" to LBM for solve the mulpiple coupled fields problems

As we know, lattice boltzmann method is one method to solve the fluid problems. and the primary work to use this method is give the corrected "boundary conditon"__pressure conditions and velocity conditions.

To general problems, the PC and VC for 2D/3D problems has been obtained by some scientists(eg.D3Q19,D2q9 ...model).

But to the lowest scale problems, the "force" fields is complexed and the traditional PC/VC is not suit for this kind of problems.

My opinion:

BoJing Zhu's picture

Fracture flow problem

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

BoJing Zhu's picture

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

 

BoJing Zhu's picture

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

BoJing Zhu's picture

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

BoJing Zhu's picture

Dissertation:Hypersingular Integral Equation Method to 3D Crack in Fully Coupled Electromagnetothermoelastic Multiphase Composit

Dissertation: Hypersingular Integral Equation Method to 3D Crack in Fully Coupled Electromagnetothermoelastic Multiphase Composites

Master: studies of hypersingular integral equation method to three-dimensional crack in bimaterials

BoJing Zhu's picture

Analyze crack problem by ABAQUS/CAE_1

Analyze crack problem by ABAQUS/CAE

1.define a crack in ABAQUS/CAE

BoJing Zhu's picture

a interesting reviewers' comments

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.

For your guidance, the reviewers' comments are included below.

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

Yours sincerely,

XXXXXXXXXXX, Professor
Associate Editor


XXXXXXXXXXXXX

Reviewers' comments:

BoJing Zhu's picture

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.

BoJing Zhu's picture

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)

Pages

Subscribe to RSS - BoJing Zhu's blog

Recent comments

More comments

Syndicate

Subscribe to Syndicate