[FSE] Fwd: Re: SES status

[František Pech]

-------- Původní zpráva --------
Předmět: 	Re: SES status
Datum: 	Mon, 08 Jul 2013 16:10:51 +0200
Od: 	Engineering Committee <engineering na fsczech.cz>
Společnost: 	Formula Student Czech Republic, s.r.o.
Komu: 	František Pech <pechfran na fel.cvut.cz>



Yes, this is much better.

The SES was ACCEPTED.

Best regards,

---
FSCzech | Engineering Committee
Email: engineering na fsczech.cz <mailto:engineering na fsczech.cz>
Formula Student Czech Republic, s.r.o.
Na Hroudách 6 261 | Nymburk | 288 02
www.fsczech.cz <http://www.fsczech.cz/>

Dne 2013-06-24 09:41, František Pech napsal:

> Dears,
> I hope that we fixed it.
> Best regards
> František Pech
>
> František Pech, tel. +420 605 208 177
> CTU CarTech Electric, Team Captain
> Drivetrain group, Mechanical assisstance
> Czech Technical University in Prague
> www.cartech.cvut.cz/electric <http://www.cartech.cvut.cz/electric>
>
> Dne 14.6.2013 10:21, Engineering napsal(a):
>> Dear František,
>> i'm afraid that this kind of analysis is not correct and I will 
>> explain why:
>> The aluminum sheets which create a honeycomb are very thin. If you'd 
>> like to analyze it with 3D (solid) elements, you must have them very 
>> small (length of all element edges should be roughly equal) and 
>> therefore the only effective way are the 2D (shell) elements.
>> Another option would be an analytic calculation which can be 
>> performed by SES (you consider the sandwich panel itself, of course).
>> Best regards,
>> FSCzech | Engineering Committee
>> Email: engineering na fsczech.cz <mailto:engineering na fsczech.cz>
>> Formula Student Czech Republic, s.r.o.
>> Na Hroudách 6 261 | Nymburk | 288 02
>> www.fsczech.cz <http://www.fsczech.cz>
>>
>>
>>
>> 12. 6. 2013 v 13:01, František Pech <pechfran na fel.cvut.cz 
>> <mailto:pechfran na fel.cvut.cz>>:
>>
>>> Dears,
>>> 6-node triangular prism elements were used in the honeycomb analysis 
>>> (chapter 3) and 8-node hexahedron elements were used in the frame 
>>> analysis (chapter 4)
>>> Best regards
>>> František Pech
>>> František Pech, tel. +420 605 208 177
>>> CTU CarTech Electric, Team Captain
>>> Drivetrain group, Mechanical assisstance
>>> Czech Technical University in Prague
>>> www.cartech.cvut.cz/electric <http://www.cartech.cvut.cz/electric>
>>>
>>> Dne 11.6.2013 13:31, Engineering Committee napsal(a):
>>>>
>>>> Dear Frantisek,
>>>>
>>>> one additional question regarding FEM analysis of the sandwich: the 
>>>> whole model is mesh by 6-node tetra elements?
>>>>
>>>> Engineering FSCzech
>>>>
>>>> Dne 2013-05-28 01:48, František Pech napsal:
>>>>
>>>>     Dears,
>>>>     we have added the dimension to SES and the required information
>>>>     in the Accupack Simulation Report and also carried out two
>>>>     other changes:
>>>>
>>>>     Firstly, we have found out that the pressure field used in the
>>>>     honeycomb simulation in chapter 3 had been calculated
>>>>     incorrectly and the total force acting on the sandwich in the
>>>>     simulation had been greater than required. We performed the
>>>>     simulation again with the correct load.
>>>>
>>>>     Secondly, we have decided to use for the accupack frame a
>>>>     material with better mechanical properties, so that the
>>>>     stresses induced in the frame are below its yield strength. As
>>>>     a result, stresses occuring anywhere in the accupack structure
>>>>     are now below the yield strength of the material they are
>>>>     induced in.
>>>>
>>>>     Best Regards
>>>>     Frantisek Pech
>>>>
>>>>     František Pech, tel. +420 605 208 177
>>>>     CTU CarTech Electric, Team Captain
>>>>     Drivetrain group, Mechanical assisstance
>>>>     Czech Technical University in Prague
>>>>     www.cartech.cvut.cz/electric <http://www.cartech.cvut.cz/electric>
>>>>
>>>> -- 
>>>> FSCzech | Engineering
>>>> Email:  engineering na fsczech.cz  <mailto:engineering na fsczech.cz>  
>>>> Formula Student Czech Republic s.r.o.
>>>> Na Hroudách 6 261 | Nymburk | 288 02 | Czech Republic
>>>> www.fsczech.cz  <http://fsczech.cz/>


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