Should local stress in the nozzle under negative pressure be considered?
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Should local stress calculation at the equipment outlet take negative pressure into account?
Under negative pressure, local stress in the nozzle needs to be considered. Since negative pressure creates a suction effect, it increases the pulling force inside the pipe, thereby leading to increased local stress. Therefore, when calculating the local stress at the equipment nozzles, the effects under negative pressure need to be taken into account. .