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I already have done it. No response either.

Hi everybody, I´m performing a thermoelastic check to a FEM with Patran/Nastran, that is formed just by shells, beams and MPCs. I have followed the rules to perform the analysis as are; same CTE, poisson´s coef. and Elastic modulus, as well as RBE2 with 0 length and no offsets, the structure is...

I have tried to enter an equation with two regimes and later to include a constant gravitatory load, but it didn´t work. May be I was wrong entering the equation. I have suceed in entering a new force-table, but I don´t know how to insert a multy-regime equation properly mixed with gravitatory...

Does anybody know how to develop a shock analysis with ansys? tutorial or examples? I have tried with ansys workbench but I think it can´t be done. Transients are only for temperatures. What I want to simulate is a 10g 11ms sine impulse in the supports. Thanks in advance, Pedro.

Hi, I´m trying to analize a 10g 11ms half sinus shock with ansys workbench. Does anybody knows how to do it?. thanks in advance, Pedro.

Anybody knows how can I mesh an igs file with hexahedral elements?. I have tried and just let me mesh with tetrahedral ones. I supose that it´s becouse geometry is too complex, but is there any way to do it? Thanks in advance, Pedro.

Hi, I’m designing boxes to contain electronic devices for scientific flights. Those boxes are sealed and pressurized because it will fly at 45 Km altitude and commercial electronics doesn’t work well in vacuum. What I’m looking for is a kind of small valves for removing the air of inside and to...

Thanks dbaird, I already have checked swagelok. But their valves are big (compaired with car tires valves, for instance).

Hi, I’m designing boxes to contain electronic devices for scientific flights. Those boxes are sealed and pressurized because it will fly at 45 Km altitude and commercial electronics doesn’t work well in vacuum. What I’m looking for is a kind of small valves for removing the air of inside and to...

I´m very interested in that information that you refer. Please, I would be wery plesed if you send me something to this e-mail: pedro.rodriguez@uv.es

I need ASME Code Sec. VIII Div1 Appendix 13 Does anybody knows where can I find a .pdf or a .doc copy of this documentation??? I have to design a rectangular pressurized box and I need it. I have been searching and the ones I´ve found are too expensive for me. Thanks in advance.

ok, sorry, try with this one: pedro.rodriguez@uv.es thankyou.

ok quark, here is my non-official mail: pedrodmar@ono.es thanks for your help.

does anybody know where can I find a .pdf or a text copy of ASME B&PV code, Sec VIII, Div. 1????

thanks for your quick reply. I was thinking in the conceptual design that you have advised, of a cylinder with two heads (spheric, ellipsoidal,..) joined through a full diameter flange and fixed with screws and nuts. Now I have to develope the new concept and let see if the volume is...

Hi, I am a Mechanical engineer and I´m developing a pressurized box (600x500x200 mm^3) that will contain electronics. The problem is that I have to keep a pressure of 1 atm in the inner, while in the outer I have almost 0 atm. I woul like to know if it is a good idea to develop the box as a...