What are the advantages and disadvantages of analytical and semianalytical methods over numerical methods like FEM and FDM?

What are the advantages and disadvantages of analytical and semi-analytical methods over numerical methods like FEM and FDM? I am looking for detailed advantages and disadvantages.

31 December 2018 7,984 3 View

How to define a position dependent loading in Ansys?

How to define a force, function of displacement and time derivative in Ansys transient analysis, for example the forced vibration problem of cantilevered beam with a dynamic f(x,t) force acting at...

09 October 2018 6,311 0 View

Could anyone suggests some experimental researches (results) of free vibrations of laminated composite plates fully covered with piezoelectric layers?

Could anyone suggests some experimental researches (results) of free vibrations of laminated rectangular composite plates fully covered with piezoelectric layers?

07 August 2018 4,784 2 View

Do external voltages exerted on electrodes of piezo-layer affect the natural frequencies, or they play the role of external load?

Consider a single piezoelectric layer (plate), polarized in its thickness direction and a top and bottom electrodes with nonzero external voltages exerted on them. Do this external voltages affect...

05 June 2018 4,918 4 View

Frequency inconsistencies in rectangular composite plate?

04 May 2018 2,929 0 View

Could some body explain what the thickness mode frequencies are in a piezoelectric plate?

I have analysed free vibration of square piezoelectric plate layer with Ansys. (0.1m ,0.1m ,0.01m) I am looking for thickness mode frequencies, but dont know which of them are. Could somebody...

09 October 2017 5,556 0 View

Could Rayleigh-Ritz method be used for vibration analysis of Forced vibrations?

Could Rayleigh-Ritz method be used for vibration analysis of Forced vibrations? For example in forced vibration of a plate under general time varying loads.

09 October 2017 8,028 3 View

What is the value of shear correction factor for (piezo)composite plates?

08 September 2017 4,514 3 View

How to find close form inverse of a large symbolic matrix in Matlab?

I have a big 1000*1000 symbolic matrix (some of its diagonal entries are function of x variable), is there a trick way to calculate closed form inverse of a such matrices in Matlab or Maple?

08 September 2017 4,307 4 View

Is there any commercial FEM software package that has shell elements to model piezoelectric materials?

08 September 2017 1,478 4 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

Complex wave form in ANSYS?

Is there a way to input wave speed in a complex form on ANSYS? The wave speed I need to assign a material is 325(1+0.11i) however I have been unable to do this thus far. Failing that, is there...

27 February 2021 5,969 1 View