Is it possible to simulate drop test using an implicit FEA solver?

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Can we use artificial intelligence to automate meshing in FEA?

Can we use artificial intelligence to automate meshing in FEA? The resulting program should be able to identify holes and create washers, simply the geometry create connections automatically,...

11 December 2019 6,223 2 View

Is the viscous stress tensor in fluids symmetric or asymmetric? Why?

Is the viscous stress tensor in fluids symmetric or asymmetric? Why? I have seen in literature that the fluid viscous tensor is symmetric but if that is the case, why does the fluid flow in only...

10 November 2019 2,187 11 View

Is it possible to apply two harmonic loads with phase difference between them in a harmonic analysis in Ansys?

I wish to know if in a harmonic analysis in Ansys (or any other FEA software) we can apply two different loads with phase difference between them.

01 February 2019 8,270 5 View

Ansys workbench gives results for static analysis even though some of the lements have negative Jacobian. Why?

Hi friends, I was running an analysis in Ansys workbench. The results are displayed without any error even though some of the elements are having negative Jacobian ratio (as seen form the mesh...

11 December 2018 2,566 0 View

Why does Campbell diagram behave this way?

Friends, I am trying to understand how the natural frequencies evolves with the speed of rotation. I tried plotting Campbell diagram for a flat circular disc. I found that forward whirls increased...

07 August 2018 8,456 1 View

Is high cycle fatigue theory valid for large stress concentration factors?

Hello friends. As per the high cycle fatigue theory, as the stress increases, the fatigue life decreases drastically and this correlates well with the S-N curve obtained from testing. However, if...

07 August 2018 7,031 2 View

How well do tuned vibration absorbers work in real life?

As per theory tuned vibration absorbers are very effective but how well do they work in real life. In the theory, the derivation is based on undamped system while in real life, the applications...

07 August 2018 4,679 6 View

Is the ratio of maximum to average velocity in a pipe flow the same for both the laminar as well as the turbulent models?

Is the ratio of maximum to average velocity in a pipe flow the same for both the laminar as well as the turbulent models? I tried solving a pipe flow problem using a CFD software but I got...

06 July 2018 2,760 31 View

What is the best way to model bolts in FEA?

What is the best way to model bolts in FEA for a linear dynamic analysis? is it beam modeling, solid modeling or something else? Remember that in solid modeling we have the problem of...

05 June 2018 1,413 5 View

How to simulate laminar flow through pipe?

Friends, I am a beginner in CFD. I have been trying to model fluid flow through a pipe. I have defined the inlet velocity, inlet pressure and outlet pressure apart from the wall boundary...

05 June 2018 7,400 8 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View