in this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. to analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...

Structures built on sands worldwide, with shallow foundations, have experienced damage and collapse during after earthquakes. Two phenomena triggered the collapse: liquefaction phenomenon P-Δ effects. However, current research practice do not fully understand granular soil behavior effects, as proven by sum of investigations physical models, constitutive laboratory testing proposals about these...

The capacity degradation of bucket foundation in liquefied sand layer under cyclic loads such as equivalent dynamic ice-induced loads is studied. A simplified numerical model of liquefied sand layer has been presented based on the dynamic centrifuge experiment results. The ice-induced dynamic loads are modeled as equivalent sine cyclic loads, the liquefaction degree in different position of san...