Skip to main content

Blog posts

hi everybody,

Submitted by suren on

 i'm studying M.S(materials science) and i"m interested in knowing how to do a project work in indenting and extracting mechanical properties of materials using ABAQUS software or using MATLAB. suggest any idea thanks a lot in advance. have a nice time.

Material model for high cycle fatigue

Submitted by Chali Alindunesiy on

In fatigue analysis, it is common to use S-N curve from database for spesific material, and some time for spesific way of loading. Is there any way to predict fatigue from direct simulation? For example, giving cyclic loading (10^5 times) and the material will suffer damage and eventually failed. In some FEM codes (MARC, LSDYNA, etc) there is Lemaitre-Chaboche model used to analyze material behavior under low cycle cyclic loading.

 Thanks in advance

Chali

ABAQUS unit conversion for nanometer length.

Submitted by wanbot on

Hi all,

I ran a pre-buckling analysis using ABAQUS.  I chose nanometer as my length unit. So for the Young's modulus, since my sample has 100 GPa for the Young's modulus, I put 0.0000001 as the value for the Young's modulus under the material property in the ABAQUS.

However, the resulted eigenvalue (~2 nN) was not as what I expected (~2uN). Based on the calculation based on the Euler buckling theory, the critical load should be around 2 uN.