Research on Inner Layer Buckling Analysis of Metal Materials in Pressure Vessels Based on Finite Element Analysis and Monte Carlo Model
In order to evaluate the buckling behavior and reliability of the metal inner layer of pressure vessels in a self tightening state,a method combining the concave interface pressure,residual bending moment,and finite element analysis model of the inner layer was adopted.The Monte Carlo model was further used to sample the random variables of the inner layer and winding layer for reliability analysis.The results show that the random changes in inner radius and thickness have a significant impact on the buckling probability,with a buckling probability of 0.5 at a self tightening pressure of 46 MPa and 1.0 at 64 MPa.At the same time,the variability of the thickness of the winding layer and the elastic modulus leads to a significant increase in the buckling probability within the range of 30～60 MPa under self tightening pressure.The buckling probability reaches 0.5 at 46 MPa and 1.0 at 64 MPa.This can reveal the key influencing factors of buckling behavior,which is of great significance for the design and reliability evaluation of pressure vessels in the industrial field.
Monte Carlopressure vesselsmetal materialsinner layerbuckling
NETL
NSTL
万方数据
