Rotate a Part & Capture the Screen

Select a component and run the macro in an assembly to rotate in desired angles and increments. You can also capture the screen.

Download the Macro From here

Finding EigenValues

Speed 3500rpm



Speed: 2600rpm

G-Code Creatore Input Sample

In this movie User Clicks on black nodes, so the geometry is created.

Red curves mean last click induced some errors and needs corrections.

Data Acquisition of Modal Tests

doing Experimental Test is a difficult task. But Explaining data is Real time consuming one.
Finding Approved tests...

interpreting data...

Exporting desired Data...

Optimum Insulation Thickness for Building Walls in IRAN

Recently, I was working on project; it was about Determination of optimum insulation thickness for building walls with respect to various fuels, climate zones in Iran and other variables( such as: insulation materials, Glazing Area percentage, infiltration value and ...).my advisers in this project were Mr Kamandlooee and Golestaneh.

It was a part of bigger project about determination of methods for optimum energy consumption in Iranian buildings which is being investigated in "Vehicle, Fuel, and Environment Research Institute". this project was defined by NTOIR.

Although Fuel is sold less than it's real price in Iran, for Climates upper than 63,000 Degree Hours heating requirements using insulation, had economical advantages; when using gas as fuel. and for Climates upper than 21,000 Degree Hours heating requirements using insulation, had economical advantages; when using oil as fuel.

a matlab code was generated by me, that uploaded required data from an *.xls file (such as building materials, insulation data, fuel cost and ...) and generated graphs cotaining following data:

• Heating and insulation costs versus insulation thickness

• Optimum insulation thickness versus present worth
• Optimum insulation thickness versus degree-days for various fuels
• Anual heaitng cost versus galzing area percantage

• and so on

Two of my papers are accepted in CADME2007 :

1. Time Domain Simulation of Chatter Vibration in Drilling

• A one DOF model for simulating chatter vibration in drilling based on gyroscopic effect due to rotating of tool and effect of the damping characteristics of flank surface is investigated. The equation is simplified to an eigenvalue problem to find the limits of stability. MATLAB DDE Solver is used to simulate the tool motion. This model can determine hole form and because of the matrix form of the equation, different parameters can be added further to find a more accurate answer or examining other process damping applications. Although, cutting forces are assumed only in one direction, stability lobs had a good agreement with experimental data.

2. Optimizing Process Time in Deep Drilling

• Chatter vibration in deep drilling is investigated, and a model is prepared to define the effect of different cutting and tool geometry parameters on the stability lobs. Then a detailed discussion for finding ways of performing faster operation is done. Effect of step drilling on process time is determined, and then different process optimization methods due to these parameters are investigated, it was dividing process in to two stages, first stage using a shorter drill with higher feed rate and then using main drill with slower feed rate. It was shown that step drilling with different tool lengths is a good way to do the operation faster.
  

Tool instruction & new links

Group is going to prepare some tools to get data from a vibrating tool.
and Today,
I have found the folliwing usful links:

http://www.memagazine.org/ (mechanical engineering)
http://www.mechanicalengineer.com (Job search)
http://www.asmenews.org/ (ASME news)