Ahmed H. Abdulaziz

20 Questions 24 Answers 0 Followers

Questions related from Ahmed H. Abdulaziz

What are the differences between Renewable Energy and Energy Efficiency Technologies?

I found that energy efficiency deals with combustion efficiency, using biomass fuels and stuff like that. Can we link between wind energy and energy efficiency by some means?

08 June 2019 2,982 6 View

What are the best mesh quality criterion for inspection element quality?

I know about mesh density, skewness, wrap angles, and aspect ratio. Per literature, aspect ratio is a quick tool to define quality of mesh. Is there a rule of thumb for acceptable values of...

08 February 2019 7,245 4 View

Is Fmincon solver suitable for nonlinear ratio (I.e. NLP/NLP)?

I use fmincon to minimise weight to stiffness ratio. This ratio is Non linear. I tested this solver by using different initial points Xo. However, results are changeable and dependent on Xo. I am...

02 February 2019 3,166 3 View

What is better for economy of a country sending money from outside in foreign currency or the national currency?

I'm a little bit understanding economy. I want to know about the most beneficial way for a country's economy. Sending money from another country in national currency or in foreign currency.

17 January 2019 513 7 View

What are the main considerations in injection mold designing and calculations?

I'd like to know the main parameters that should be considered in designing of injection mold. Also, I need to know a source for standardized calculations.

11 February 2018 6,504 3 View

Is there any significant effect of pre-loading on Elastomeric pads used as vibration isolators?

The Elastomeric pads can be used as vibration isolators. I want to know whether there is significant effect of initial compression (pre-loading) of this pads on increasing the dynamic stiffness or...

07 August 2017 2,680 5 View

How to start learning optimization methods? which books shall I begin to read?

I'm a mechanical engineer. I'm interested in learning about optimization methods and how we can implement them in a problem. I want to apply one of them in structural to increase rigidity to mass...

02 March 2016 6,861 11 View

What is the basic theory of selection of elements in ANSYS WORKBENCH only?

I used ANSYS Workbench in the modal analysis of a structural frame. The structure is imported as solid body NOT surface model. I meshed it using mapped mesh option and hexa\tetra elements....

13 February 2016 3,648 4 View

How do you manage data from strain gauges placed on a certain zone on a structure?

I have a cantilever steel beam of 1m length. I want to determine the strain near fixation due to the bending moment of a dead weight on the tip of the beam. I plan to place 3 strain gauges near...

15 January 2015 4,657 4 View

What is the procedure of a distorted model in Buckingham pi theorem?

I have a distorted model to a prototype. Dimensional scale for thickness is not same as other geometrical dimensions. I found that there is procedure to use distorted model to predict the...

05 October 2014 4,537 4 View

How can I get area moment of inertia in ansys apdl?

I need to get the area moment of inertia.

02 October 2014 7,952 5 View

What should be done if one of the Pi groups are not same for model and scaled down prototype?

I used Buckinghum Pi theorem. I derived pi groups for the natural frequency phenomena. The first pi group was function of (natural frequency, E,Rho,Cantilever length) The second pi group was...

29 September 2014 9,991 3 View

How can I delete the error & warning messages that violate the memory span IN ANSYS APDL?

I have an error as shown , how can I delete the error messages that violate the memory span?

07 August 2014 4,923 3 View

Is there any formula that is used for calculating the deflection of HAWT blade?

I need to calculate the deflection of a 7m blade, and I've tried to simplify the blade as tapered beam and then derived deflection low for it , but this law gave deflection half of the...

10 July 2014 8,897 8 View

What are sources of errors in dimensional PI -theorem of deflection relations?

I was working on getting non dimensional pi-groups for a model and scaled down similitude of cantilevers. For a cantilever : I got a pi1 =Deflection "u"/length"l" So i used u/l )model = u/l...

28 June 2014 7,792 1 View

Can I use trial and error to define material properties in ANSYS?

I have done a vibrational analysis on an orthotropic ABS plastic wind turbine blade, it is required to set its 9 elastic properties. I searched and got a range for longitudinal modulus of ABS then...

12 May 2014 4,602 4 View

How can I get a cross model assurance criterion matrix?

I made experimental modal analysis and an FE modal analysis. I want to use the statistical indicator MAC. I have to use the table and check the value of this indicator. I do not know where can...

29 April 2014 2,398 1 View

How do you obtain experimental results close to ansys results for simulation of a wind turbine blade?

I have a model of a wind turbine blade made of abs polymer. I made experimental measurements and did ansys simulation to get the atural frequencies and mode shapes. The results in the first mode...

14 April 2014 7,344 5 View

Has anyone worked on modal analysis on ANSYS ADPL for horizontal axis wind turbine blade with length 7 meters?

I need to compare my natural frequencies with other's model to check if my frequencies lie within a reasonable range or not.

26 February 2014 554 1 View

I cannot display the mode shapes because "The degree of freedom solution is not available". What else can I do to check the modes?

I have created a simple model, a plate surface. I fixed one side with zero for all 6 degrees of freedom and other sides are free. I want to make Modal analysis and I made it with results for the...

22 February 2014 10,008 3 View