Is Hertzian Stress a Factor in Blast Resistant Door Design?

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SUMMARY

The discussion centers on the design of blast-resistant doors subjected to a blast pressure of 450 psi for 100 milliseconds, with dimensions of 2100 mm x 1100 mm. Key considerations include the conversion of dynamic loads into static loads and the verification of door thickness to prevent buckling and shearing. The design must account for peak stress within the elastic range, while the relevance of Hertzian stress in this context is questioned due to the low frequency of the blast event.

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  • Understanding of blast pressure dynamics and its effects on structural integrity
  • Knowledge of material properties related to buckling and shearing
  • Familiarity with static vs. dynamic load analysis
  • Basic principles of stress analysis in engineering design
NEXT STEPS
  • Research methods for converting dynamic loads to static loads in structural engineering
  • Study the principles of buckling and shearing in material design
  • Learn about stress analysis techniques, particularly in the context of blast-resistant structures
  • Investigate the role of Hertzian stress in various loading conditions
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Engineers and designers involved in the development of blast-resistant structures, particularly those focusing on door design and material performance under extreme conditions.

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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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.
 
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?
 

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