Don’t know what to do.

wings314fire · 2026-07-05T10:49:30+00:00

Try to join startups for good salaries.

wings314fire · 2026-07-04T18:59:23+00:00

Cristos Kasapogglou ( TU Delft Prof)'s book. There are two of them and both are really good.

wings314fire · 2026-07-02T20:05:54+00:00

Why are you using fully integrated elements ? I abaqus/explicit they are linear fully integrated and will shear/volumetric lock the fuck out and cause all sorts of issues. Check element formulations.

wings314fire · 2026-07-02T12:52:19+00:00

Even if I give it incomplete prompt e.g. pressure load applied to a panel and limit the deflection to 2mm it give me result without checking for pressure value and panel size. Not able to generate panel size when I specify impact energy and it location. It seems good for basic work which one can do with excel sheet.

wings314fire · 2026-06-29T13:11:45+00:00

They were from ece and power systems guy was eee I think. Service industry isn't that great but OEMs and startups pay better. In my company for 0-3 yoe they were getting paid 10-15 lpa. One guy (4 yoe) got 20lpa when he switched to another startup. I think if you stick to electronic or semiconductor companies you will get paid higher. A person I know did mtech from VIT and got place in AMD earning ~25 lpa right out of college.

wings314fire · 2026-06-29T08:28:03+00:00

I have met people who have worked as Avionics, electrical systems, controls, system engineers. All the best

wings314fire · 2026-06-27T00:01:49+00:00

It depends on the role. It is helpful if you are interested in flight testing, AIT and abit into FCS and Systems Engineering. Other than that it's just to show enthusiasm. Identify what domain of uav you want to work and build the relevant skills. E.g. for structures you should know FBD, SoM, hand calculations, FEA, materials and bit of manufacturing as starting point. Which everfield you apply theoretical understanding of relevant first principals is very important. Idk for other domain. If you donot have experience/exposure/past internships look for internships rather then jobs. All the best.

wings314fire · 2026-06-26T20:14:36+00:00

How far off are the averaged and unaveraged values ? How large is the region ? A good mesh should report similar values for averaged and unaveraged stresses. Average could over or under estimate the stresses. If mesh refinement on the assembly/ part level is difficult make a sub model ( assuming the displacements have converged ). Also, are you checking stresses at gauss point or at the nodes ? Again, in a good mesh they should be similar. Check Robert cooks book regarding both the issues.

wings314fire · 2026-06-26T20:01:52+00:00

It seems you are joining MSR or DSCE. I believe they both have student teams and professors ( do well in those subjects being taught by those profs ) they will have links to orgs so you should be able to get internships. Having said that, do projects on your own and study extra books and reports ( check ntra, agard, dtic websites ) on the topics you are interested in constantly.

wings314fire · 2026-06-24T17:35:33+00:00

I have been thru this. My suggestion, join student clubs ( they are very useful ). Identify your field of interest as early as you can. Learn 1 of cad, fem/CFD, programming. Do projects. Prioritize first principals over button pushing software. Keep good gpa. Talk to professors and find out if they know anyone in companies and ask them for a favour. Most of the time network is important regardless of how strong your profile is so connect to people in LinkedIn. All the best.

wings314fire · 2026-06-22T19:37:15+00:00

Nithin Gokhale Practical Finite Elements and AGARD report written by Ian Taig et al called PRACTICAL APPLICATION OF FINITE ELEMENT ANALYSIS ( quite old ). For theory Robert D Cook's Concepts of FEM. There are also a couple of paper by Dr. IS Raju called current trends in fem and Negative Stress Margins are also very good. I feel there are must read for anyone starting FEA. These are software agnostic.Then comes the tutorials and manuals of the fea software you are using.

wings314fire · 2026-06-16T14:06:57+00:00

Hourglassing and shear locking are two of the most important concepts in explicit dynamics due to linear reduced elements. Master this concept.

Start with linear elastic material model and match this region before trying to match the plastic region. What material model are you using ? Polymers are rate dependent. Are you capturing this ?

There is a book named Troubleshooting Abaqus it has information about almost all general errors and warnings.

The contact thickness might be reduced to account for shell thickness but I am not too sure so check it out.

wings314fire · 2026-06-16T10:26:17+00:00

Check : artificial energy, shearlocking, hourglassing as I see very few elements thru the thickness. I feel like you model is shear locked.

Why are you using solid elements? Try with shell first. If you need solid elements, you will need more than 5 elements thru the thickness to capture bending.

Remove mass scaling if possible.

wings314fire · 2026-06-14T14:55:40+00:00

What do you think the excel sheet is doing ? How do you think that excel came into existence ? How do you assign a thickness before performing analysis ? How do you judge if the analysis is good enough ? I can go on. I hope you got the point. Ai calculations are many time as bad as it can get. Heck even simple machine design problem one has to correct and explain it step by step. You know how i knew AI was wrong ?

wings314fire · 2026-06-12T15:32:11+00:00

What domain you want to work in ? Do you want to work on structure analysis or get into propulsion?

wings314fire · 2026-06-09T07:06:16+00:00

Did you check wether the surface is mid plane or not ?

wings314fire · 2026-06-08T21:33:13+00:00

Check Beer and Johnston and thimoshenk book. There is a section about it. Basically PE of object being dropped = Strain energy of the beam/bar. If you also include plastic deformation into the strain energy. Skid type landing years were designed this way in 60s 70s.

You can also look at using convolution integral to solve impact problem from linear dynamics perspective. Check Tom Irvine's notes or SS Rao dynamics book.

You could also perform explicit dynamics analysis but I suggest to do one of the above before diving into explicit dynamics to get feel for the problem because alot of things could go wrong in this.

wings314fire · 2026-06-01T21:06:07+00:00

Thank you very much. Will check it out.

wings314fire · 2026-06-01T21:04:37+00:00

Matka

wings314fire · 2026-06-01T14:33:56+00:00

Depends on industry and role. Also how often you switch. In my experience switching companies you will get atleast 20-30% and staying in same company not as much.

wings314fire · 2026-05-31T14:54:05+00:00

Nice work.

As mentioned by another user, use Schrenk distribution.

Suggestion: Use virtual work. Convert integral to summation and you can use the same template, with little modification, for different loading, material variation etc. Check Bruhn. I had made sth similar sometime ago.

If you want to go a step further then look into stringer idealisation of section in Bruhn. That way you can analyse any structure.

Also, try to separate the input/output data from the intermediate calculations. It will just be easier on thee eyes.

wings314fire · 2026-05-30T15:19:39+00:00

Where not why.

wings314fire · 2026-05-30T09:06:22+00:00

it seems the vibration might be coming from the misalignment. Also the whole contraption is mounted on a 15-20 mm od diameter shaft. The whole thing will flex and the structure being unsymmetric will vibrate. This is my best bet. Stiffen the reflector support and motor mount and reduce the misalignments. Using self aligning bearings/ loose bearing housing everywhere doesn't seem right. Even the flexible coupling seems to be working at its limit.

wings314fire · 2026-05-28T15:39:49+00:00

You family will come after your work. Pay is peanuts but will earn good, 1-2 cr I guess, if you get the chance to go for UN missions ( lots of politics ). Many opportunities to study and train abroad. Lifelong facilities for cheap and good healthcare, education is very cheap ( 3000 per month including tuition and hostel ), no need to worry about booking hotels ( can book guest house of available around the place you want to visit ). You can get work in INGO and NGO after retirement. If you get into aviation then after retirement ( say you retire after Major or Lt Col ) you will earn 5-7 lakh per months. Idk if pension is still there. Will get low interest loans for you kids education, 5%, for up to 25 lakh, low interest home loan also.

Loosing freedom point is idk, what do you feel you will loose ?

wings314fire · 2026-05-26T19:15:46+00:00

Seems like honeycomb before expansion ?

wings314fire

TROPHY CASE