Dynamic magnification of explosion pressure

[Mitz153]

In designing a wall to withstand an explosion pressure of X psi from an industrial accident - can anyone help me to understand how to determine the equivalent static pressure that should be used in designing the wall?

What determines what "dynamic magnification factor," if any, should be applied to the explosion pressure?

Appreciate any guidance you can provide.

 

[mrMikee]

The dynamic load factor (maybe also called the dynamic magification factor) is the ratio of the dynamic displacement of a structure to the equivalent static application of a force. My college text "Introduction to Structural Dynamics" by John M. Biggs published many years ago had a very good discussion of DLFs and impulse loads on structures.

The short answer to your question is that the stress in a structure is proportional to the displacement, and the displacement (or defelection) depends on the magnitude and duration of the impulse or dynamic load relative to the fundamental frequency of the structure. Defining the applied force mathematically may be difficult.

A design problem of this type would certainly seem to be an area where the guidance of experienced consultant is recommended.

Regards,
-Mike