Analysis Of The Heat Transfer In A Naval Gun Barrel And Evaluating It’s Erosion

Barrel Heating is a important factors affecting the barrel’s mechanical properties anderosion wear. In this report a gun barrel is used as the research object. Analysis and researchof barrel heating, stress and erosion wear and other issues is based on the interior ballisticstheory, engineering of heat transfer theory, ablation wear calculation model and ablation wearinterior ballistics model. And using the results to simulate and analyze the temperature ofbarrel and erosion wear at the different rate of fire. The main contents are as followed：(1) Based on the interior ballistics theory, collect the interior gas temperature data,density, pressure and the boundary conditions to analyze the barrel temperature field.Establish the barrel heat transfer calculation model and analyze the barrel temperature alongthe radial and axial distribution. Using the PYTHON language design the system aboutthe heat transfer for improving efficiency of the work.(2) Direct coupling method of barrel thermal-elastic coupling analysis is used to simulateand analyze the barrel’s thermal stress and the equivalent stress. The auto-fretted barrel’sthermal stress and equivalent stress calculation is based on the elastic-plastic material modeland through finite element analysis software simulate the auto-fretted process.(3) The barrel’s melting erosion wear calculation model and ablation wear interiorballistics model is established. The amount of wear and erosion barrel and wear of interiorballistic performance On the basis of the calculation of heat transfer is analyzed.(4) Based on the heating and ablation wear calculation model, the different firing rate ofbarrel heating, ablation wear to stimulate and analyzing the result. Summarizes thecharacteristics of barrel heating and ablation with the improvement of firing rate.