ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that i...ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that is bottlenek of calculating the release pressure in safety valve online adjusting.After adjusted hundreds of safety valves,we can reach that those two methods have enough efficiency and precision.展开更多
The equivalent static loading of steel explosion-containment vessel is derived by combining the numerical modeling techniques of the explosive mechanics with the bynamic coefficient method.The strength design of the v...The equivalent static loading of steel explosion-containment vessel is derived by combining the numerical modeling techniques of the explosive mechanics with the bynamic coefficient method.The strength design of the vessel can be checked on the base of the equivalent static loading and modified with the elasto-palstic finite element code.Several steel explosion-containment vessels with different TNT equivalent are successfully developed by this engineering design method.展开更多
The three dimensional elastic-plastic finite element analyses were carried out to investigate the variations of stress concentration in the nozzle-vessel junction of pressure vessels, under various geometrical sizes t...The three dimensional elastic-plastic finite element analyses were carried out to investigate the variations of stress concentration in the nozzle-vessel junction of pressure vessels, under various geometrical sizes t/T and r/R (the rations of nozzle - vessel thickness and radius respectively). The effects of t/T, r/R and the plastic deformation on the axial and hoop stress concentration factors (SCF)was examined systematically. The analysis results provided the bases to understand deeply the varying laws of SCF for nozzle -vessel展开更多
This article briefly introduces the design method of U-shape bellows by Finite Element Analysis (FEA). The comparison between the FEA results and formula calculation results proves that the application is feasible. Th...This article briefly introduces the design method of U-shape bellows by Finite Element Analysis (FEA). The comparison between the FEA results and formula calculation results proves that the application is feasible. The stress distributions in U-shape bellows subjected to internal pressure and displacement are also given here.展开更多
文摘ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that is bottlenek of calculating the release pressure in safety valve online adjusting.After adjusted hundreds of safety valves,we can reach that those two methods have enough efficiency and precision.
文摘The equivalent static loading of steel explosion-containment vessel is derived by combining the numerical modeling techniques of the explosive mechanics with the bynamic coefficient method.The strength design of the vessel can be checked on the base of the equivalent static loading and modified with the elasto-palstic finite element code.Several steel explosion-containment vessels with different TNT equivalent are successfully developed by this engineering design method.
文摘The three dimensional elastic-plastic finite element analyses were carried out to investigate the variations of stress concentration in the nozzle-vessel junction of pressure vessels, under various geometrical sizes t/T and r/R (the rations of nozzle - vessel thickness and radius respectively). The effects of t/T, r/R and the plastic deformation on the axial and hoop stress concentration factors (SCF)was examined systematically. The analysis results provided the bases to understand deeply the varying laws of SCF for nozzle -vessel
文摘This article briefly introduces the design method of U-shape bellows by Finite Element Analysis (FEA). The comparison between the FEA results and formula calculation results proves that the application is feasible. The stress distributions in U-shape bellows subjected to internal pressure and displacement are also given here.
