Experimental modal analysis results?

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How to hide mesh in Ansys MAPDL?

Hello, Is there a possibility to hide the mesh on MAPDL, Im working with a very big model and showing the mesh causes ansys to crash, I don't have any geometry entities on the model (KP, Lines,...

05 June 2018 9,563 0 View

Is there any Cheap FEA software?

Hello, I'm looking for a cheap commercial FEA software, it does not have to be multi physics or contains non linear simulations, all i need is an FEA soft in which we can import STEP files and...

06 July 2017 8,075 0 View

How to convert .unv or .med files to .inp or .msh files?

Hello, Is there any software in which we can convert the mesh files (.unv or .med) to (.inp or .msh) files? Thank you in advance

06 July 2017 2,928 0 View

Is there a method to get rid of matrix singulatiry?

Hello, i wish to know if there is any algorithme to get rid of matrix singularity. thank you.

04 May 2017 1,280 6 View

PhD or an engineer?

Hello, I am in my final year to get my engineering degree at numerical calculations (FEM majoratelly), i'm really confused whether investing 3 years in a PHD thesis, which can help me enhance and...

04 May 2017 3,398 3 View

What could/ should be done before a finite elements analysis?

Hello everyone, i'm an intern in a company that produces HVAC systems, my mission is to study the transmission of the vibrations generated by the moving parts(fans, compressor...) to the bodycar,...

02 March 2017 3,930 9 View

The ''MODSELOPTION'' an ''MXPAND'' commands on Ansys?

I'm trying to perform an harmonic analysis on Ansys with the modal superposition, i would like to know how to apply a creterion for the mode expantion depending their effectives masses, knowing...

09 October 2016 5,998 0 View

Transient analysis with modal superposition on Ansys?

How to chose from the modal base the optimal base of mods to be exapanded depending on their effecitves modals masses for use in transient analysis with modal superposition on Ansys?

09 October 2016 5,056 4 View

Is it possible to keep the eigen frequencies and eigen modes of a flexible body when we represente it by rigide bodies ?

is it possible to represent a flexible body by a multiple of rigide bodies (>10 bodies), this rigide bodies are attached between them by springs and dumpers so they can behave exacly like the...

01 January 1970 3,637 5 View

How to convert accelerations to displacements in frequency domain?

Hello, I have some data of accelerations in the frequency domain, I wish to get displacements explicitly from the accelerations, the problem is that I don't know exactly what should I use,...

01 January 1970 9,191 0 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Stability of the Solar System: Insights from Einstein’s Equations ?

The stability of the Solar System is a complex subject that blends the classical framework of Newtonian mechanics with the modern insights provided by General Relativity (GR). Understanding this...

07 August 2024 2,569 1 View

Should I remove an item from a scale to raise Cronbach's alpha and McDonald's omega or is it better to leave it if they are both over .7 already?

Hello! I have this scale which had 10 items initially. I had to remove items 8 and 10 because they correlated negatively with the scale, and then I removed item 9 because Cronbach's alpha and...

01 August 2024 4,606 7 View

How to correctly use the UTE and ZTE pulse sequences in Bruker's ParaVision software?

I am using a Bruker 600M solid-state NMR spectrometer with a Micro 2.5 microimaging system. The test sample is a tube of 1M LiCl aqueous solution, and the nucleus detected is 1H. I am trying to...

01 August 2024 9,227 1 View

Why 3 replicates for most biological assays? Is it enough to examine the data fits normal distribution?

Just bounced on me. Before statistically analysing significant difference, shouldn't we see if data fits normal distribution first? Is 3 replicates enough to testify the hypothesis of normal...

31 July 2024 8,141 13 View

Posthoc test lettering in JAMOVI?

Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...

31 July 2024 3,333 4 View

What is the solubility of Iron (+3) in Bismuth Oxide?

Dear all: I am modifying Bismuth Tungstate with Hematite (Fe2O3), so I would like to know about how much Iron(+3) can form a solid solution in a Bismuth Oxide matrix. Best wishes Marco

29 July 2024 2,163 1 View

Optimal siRNA Volume for Complexation with Liposomes in a 2.5 mL Solution with 10 mg/mL Lipid Concentration?

How much volume of siRNA can I add to 2.5 mL of liposomes with a total lipid concentration of 10 mg/mL?

27 July 2024 6,920 1 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View

Can anyone kindly suggest research topics in the area of thermodynamics, heat transfer, fluid mechanics or renewable energy?

I am an undergraduate mechanical engineering student seeking suggestions on topics related to either thermodynamics, fluid mechanics, heat transfer or renewable energy for my final year project....

24 July 2024 4,058 5 View