Blog posts
On an equation from the theory of field dislocation mechanics
Luc Tartar and Amit Acharya
Bulletin of the Italian Mathematical Union, (9)IV, 409-444, 2011
MRC Elsevier Distinguished Lecture, NJIT, Monday 18 April 2011
Elsevier is pleased to announce that Professor Sia Nemat-Nasser will be presenting 'Managing Stress Waves Over Multi-frequencies by Micro-architectural Design of Materials', the Mechanics Research Communications Elsevier Distinguished Lecture (sponsored by Elsevier and the New Jersey Institute of Technology Granular Science Laboratory). The lecture will take place in the Guttenberg Information Technologies Center, NJIT, on Monday April 18, 2011, 11:30 a.m. - 1:00 p.m. Full details are available at
Modal analysis
Hello
I am doing a Modal analysis on a structure made up of 3D-Beam4, Mass21 and Shear panel 28. To be more clear, the structure looks like a cube made up of Beam element on all 12 edges with Mass21 element at all corners of the cube and also with shells (shear panel 28) at all six faces of the cube.
I first constructed the beam structure with keypoints and lines, then i added the point masses and meshed them, then i created the shell element using Modelling-create-area and meshed it. Finally i merged them using "NUMMRG, ALL" in the command field.
3 D simulation of nanoindentation
Hello everyone,
I build a 3D model in abaqus to simulate nanoindentation.The job finished successfully, but the problem is when I run the odb file for output there is no stress distribution in the specimen around the tip.Its just like a knife poking a piece of butter.There is no stress distribution!!I did the nanoindentation simulation in 2D .It was ok then.But for 3D I am facing this problem.Anyone can help?
The boundary condition I used is:
For making the specimen fixed :u1=u2=u3=ur1=ur2=ur3=0
Convergence of Stress Value Near a Sharp Notch in ANSYS or ABAQUS
Dear All
I'm working on my thesis and in a part of it, I have to determine the stress around a sharp v-notch specially on the tip of it. the model is so simple(a rectangular plate with a v-notch on on the left side of it) and the load is tensile. But after solving the problem with both ANSYS & ABAQUS I realized the finer meshes,the greater stress on the tip of notch. I tried p-element method,but by using maximum level of p-element(that is 8) and fine meshes I couldn't reach to convergence again. I'm so confused and I really need help.
thanx.
Journal Club Theme of March 2011: Mechanics at Nano-Bio Interfaces
Ansys Analysis of Prestressed Concrete Columns
Hi,
Has anyone or can anyone help me model a prestressed concrete column on Ansys?
I have to model several different prestressed concrete columns to compare to an actual experimental result. I am just getting my feet wet with ansys and any help will be greatly appreciated.
Thanks!!!
Wavelengths of surface features
I am working on the surface features of steel . I understand that surface features are broken down into various wavelengths and represented as Wa to We (0.1mm to 30mm wavelengths). Could some guide me to a reference which shows how to go about this process from the raw surface profile data ? Possibly, it involves Fourier Transforms, but I need a basic reference which shows how it is done .
Thanks!