Is Hertzian Stress a Factor in Blast Resistant Door Design?

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In summary, the speaker is a production student studying at VJTI Mumbai. They have a problem on designing a blast resistant door with specific dimensions and blast pressure. They are looking for assistance on whether dynamic load can be converted into static load and what factors are involved. They also inquire about the procedure for verifying the thickness of the door. The expert suggests designing the door to avoid buckling and shearing and considering peak stress in the elastic range. They also question if hertzian stress would be a factor in this scenario.
  • #1
ajay_vjti
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Dear all

i am studing in VJTI mumbai
I am a production student

I have given a problem on Blast resistant door design

Input is Blast pressure is 450 psi for 100 ms(millisec)
door size is 2100 mm x 1100 mm

Can Dynamic load converted into Static load?
if yes then what is that factor?

if no then What is a procedure to verify the thickness of door is
acceptable?

waiting for reply
pleasezzzzzzzzzzzzzzzzz do help me
 
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  • #2
Input is Blast pressure is 450 psi for 100 ms(millisec)
door size is 2100 mm x 1100 mm

Well one has 450 psi (2.1 m x 1.1 m) which gives a distributed load.

The door must avoid buckling and shearing, and one would design it for peak stress in the elastic range.
 
  • #3
Astronuc said:
Input is Blast pressure is 450 psi for 100 ms(millisec)
door size is 2100 mm x 1100 mm

Well one has 450 psi (2.1 m x 1.1 m) which gives a distributed load.

The door must avoid buckling and shearing, and one would design it for peak stress in the elastic range.

Would hertzian stress matter? Or would the frequency be too low for it to matter?
 

FAQ: Is Hertzian Stress a Factor in Blast Resistant Door Design?

What is a blast resistant door?

A blast resistant door is a specially designed door that can withstand the force and pressure of an explosion. It is typically made with reinforced materials and structural elements to ensure maximum protection.

What factors should be considered when designing a blast resistant door?

When designing a blast resistant door, factors such as the expected blast load, door size, materials, and installation location should be taken into account. Other important considerations include the surrounding building structure and the potential for secondary impacts from debris.

What materials are commonly used in blast resistant door design?

Some common materials used in blast resistant door design include steel, aluminum, reinforced concrete, and laminated glass. Each material has its own strengths and weaknesses, and the choice will depend on the specific requirements and budget of the project.

Are there any codes or standards for blast resistant door design?

Yes, there are codes and standards that provide guidelines for the design, testing, and installation of blast resistant doors. These include the Department of Defense Unified Facilities Criteria (UFC), the American Society of Civil Engineers (ASCE) standards, and the International Building Code (IBC).

How are blast resistant doors tested and certified?

Blast resistant doors are typically tested using a shock tube or an explosive charge to simulate the effects of an explosion. The door is then evaluated based on criteria such as pressure resistance, debris impact resistance, and structural integrity. Certification is usually done by independent testing laboratories or agencies, and the results are used to determine the blast resistance rating of the door.

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