About me!

Hello All, 

This personal web-page aims to archive a portion of my research and teaching works mainly on the field of structural mechanics. I included a very brief introduction to finite element method -which you can find a vast information about in various sources, but i tried to simplify here for no-background beginners-, and a set of presentations on my work mostly on; 
  • finite element analyses of some special issues in structural mechanics e.g. plasticity, buckling, fracture, damage mechanics, fatigue, contact problems
  • manipulation of finite element analyses using external scripts for optimization, reliability evaluation or parametric studies
  • visualization and interpretation of analysis results
Though the theoretical base introduced in this web-page is unarguably not enough to solve this kind of highly nonlinear and complex problems; may give a fundamental sense to the readers of this blog. I tried to prepare know-how tutorials for each problem using ANSYS Mechanical for structural mechanic simulations using implicit time integration scheme, LS-DYNA for explicit time integration, MATLAB and Python scripts and libraries to manipulate and visualize analysis results. Following these tutorials may require essential knowledge on theory and interface of each software, as well as a valid (academic or commercial) licence for use.

During my studies (still?), beside thick textbooks and software manuals, I've also made use of YouTube channels and blogs like this one; so now I think that kind of blog may help future researchers, engineers, students or just simply people who are interested in structural mechanics to progress faster than I did.

For further discussion, please don't hesitate to contact me at: moyilmaz@inm.yildiz.edu.tr

Comments

Post a Comment

Popular posts from this blog

Lateral Torsional Buckling using PYANSYS

In this post, I'll use pyansys  to solve the I-section LTB problem  . You can find the python library pyansys on the following link; https://github.com/akaszynski/pyansys  Though the fact pyansys classes are quite intuitive for APDL and python users, documentation on the following link may also help; https://pyansys.readthedocs.io/ After importing pyansys to any python terminal, you can start an ANSYS server using pyansys.ANSYS() class and free to run any APDL command using pyansys.ANSYS().run("some APDL string") . Also full list of available commands, that you can directly use python double or integer variables as APDL inputs, is available here . It is also worth to noting that you can use pyansys.convert("apdl input file","python script") class to convert an APDL input to a python script that you can manipulate analysis and results easily in python environment. Here we go, I'll call os too, just to point ANSYS server a run path in my ...
Read more

Elastic Beam Problem without using ANSYS GUI

Image
With this tutorial I'll start a new series of tutorials that I explain how to use Ansys Parametric Design Language (APDL) to create and analyze finite element simulation models. Using APDL, instead of graphical interface may help you significantly if you are want to run your simulation with varying parameters, e.g. optimization, reliability or sensitivity analyses.  Well, I'll start with the simple cantilever beam problem that we may assume the beam remains in elastic. Before starting to create a simulation model, at least for the beginners of computational mechanics; it's worth to remind that this process has three major phases; - Pre-prossesing  It is the phase that you (1) create your geometric model, (2) define constitutive parameters, (3) discretize (mesh) the FE model, (4) define boundary conditions, (5) analysis settings and etc. Started by /PREP7 command in APDL.  - Solution Its name tells what it is; software tries to approach a solution for...
Read more

Modal Frequencies and Shapes of Bogazici "Bosporus" Suspension Bridge

Image
I've created a numerical model of one of the three bridges between European and Asian sides of Istanbul city. Actually, this is the old configuration of the suspension hangers, which was replaced by vertical hangers in 2016. Since I do not have detailed information about the new configuration, I couldn't model it yet.  Yet, this study includes determination of modal characteristics of the bridge; as soon as I get adequate details (technical drawings, material properties etc.) I am going to implement a modified model and compare old and new configurations. One can find a detailed information on the modal characteristics of this bridge in Apaydin (2010)*. Lateral + Torsional (0.063 Hz) Lateral Asymmetric + Torsional (0.065 Hz) Vertical Asymmetric (0.074 Hz) Vertical Assymmetric 2 (0.113 Hz) Lateral Assymetric 2 (0.167 Hz) * Apaydın, N. M. (2010). Earthquake performance assessment and retrofit investigations of two suspension bridges...
Read more