Design of Sliding Door for TNT Explosion
Design of Sliding Door for TNT Explosion
(OP)
Hi All,
We have a request from client to design a sliding door system to resist explosion from 50kg of TNT at distance of 0.50 m.
Now, I'm familiar with designing for blast resistant doors in petrochemical facilities, but this is something entirely different.
Are there any design guidelines for designing to such explosive related blasts?
Rgds
Angre
We have a request from client to design a sliding door system to resist explosion from 50kg of TNT at distance of 0.50 m.
Now, I'm familiar with designing for blast resistant doors in petrochemical facilities, but this is something entirely different.
Are there any design guidelines for designing to such explosive related blasts?
Rgds
Angre






RE: Design of Sliding Door for TNT Explosion
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Design of Sliding Door for TNT Explosion
I've done some Web Search and come across Sadvosky's equation.It is a three term eqation with dominating term of 7.0*TNT weight in kg/(distance in metres)^3 = 7*50/.5^3 = 2800 atm
This is almost impossible to design to. I'm pondering over the matter, as to should I inform the client that this is almost impossible to design for and ask for more reasonable parameters.
Rgds
Angre
RE: Design of Sliding Door for TNT Explosion
But, yes, I'd say they should revise their loading to be less conservative. Unless of course the consequence of failure means that such conservativeness is warranted.
Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com
RE: Design of Sliding Door for TNT Explosion
Have you considered quickly painting a big black circle on the floor where the 50kg of TNT is sitting, so that it will fall through and the threat will be eliminated?
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
Article with references at the end. I imagine the references all require authentication though. The article seems to indicate that the impulse load should not be looked at statically as that would be way too conservative.
RE: Design of Sliding Door for TNT Explosion
This case though is far more than 5 atm.
1gibsons suggestion though meant in jest, does indicate some way forward. May be a damage absorbing replaceable cladding is the way forward.
Teguci's reference also indicates that the demand on the door is not linearly proportional to the amount of TNT.
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
Granted, by the time you look at learning a new FEA package, you may wish you'd gone with a specialty contractor.
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
Some things to look at;
http://www.fema.gov/media-library-data/20130726-14...
http://www.fema.gov/pdf/plan/prevent/rms/453/fema4...
https://www.fema.gov/media-library-data/20130726-1...
http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_r...
this one is specifically labeled: "BLAST RESISTANT DOORS"
https://www.wbdg.org/ccb/DOD/UFGS/UFGS%2008%2039%2...
http://pdc.usace.army.mil/library has a couple of spreadsheets and documents related to blast resistance
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
ABAQUS Examples Manual has a similar problem solved along with the model files.
RE: Design of Sliding Door for TNT Explosion
Dave
Thaidavid
RE: Design of Sliding Door for TNT Explosion
RE: Design of Sliding Door for TNT Explosion
Interesting problem.
RE: Design of Sliding Door for TNT Explosion
I feel that with sliding doors, the design of iron mongery would be simpler.
Haynewp, along with leaf, we have to design for door frame, hinges and bolts.
We get the forces acting on these items through FEM analysis and design using conventional methods.
There is also the option of going to specialised vendors(for hinges and sliding bolts and they come up components to resist the given forces.
Rgds
RE: Design of Sliding Door for TNT Explosion
for fabrication aspects of blast doors.
RE: Design of Sliding Door for TNT Explosion
Seems to me that added weight on rollers and tracks is hardly "simpler"
TTFN
I can do absolutely anything. I'm an expert!
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers