An Optimal Design Method for Shell Formwork with Grooves

Abstract

The invention discloses a method for optimizing the design of a formwork for shell extraction with slots. The method is a technical scheme based on the combination of structure optimization and numerical analysis based on the finite element method. The optimal topology structure is determined in the conceptual design stage, and the detailed design The slotting gap and thickness of the stage are determined according to the absorbed energy, so as to ensure the best topology and lightest shell formwork structure. Compared with the traditional design, the weight can be reduced by about 30% under the premise of satisfying the strength. The impact force can be absorbed to the greatest extent, and the shell-extracting formwork with grooves designed by the method of the present invention has high shock absorption and small impact, thereby improving the stability of the shell-extracting system. This optimal design method can also be used in the structural design of other products with grooves for suction and flushing.

Description

technical field [0001] The invention belongs to the technical field of mechanical design, and relates to a design method of a slotted mechanism, and more specifically relates to an optimal design method of a cannon slotted casing template. Background technique [0002] The breech mechanism is one of the main components of the gun body. Its main function is to lock the bore of the gun when the gun is fired, to fire the primer of the shell and to draw out the cartridge after firing. After the shell is fired, it produces a great impact on the rear seat, and the shell extraction mechanism acts as a buffer to absorb the energy of the impact as much as possible to reduce the damage caused by the impact force to the breech block mechanism. The shell-extracting mechanism includes a bobbin, a rocker arm, and a shell-extracting template, etc. [0003] In the development process of new artillery, most manufacturers design the shell formwork according to empirical formulas, so that the...

AI Technical Summary

Problems solved by technology

However, for the shell formwork with shock absorption and cushioning, how to determine the optimal topology in the conceptual design stage, and determine its slotting gap and thickness in the detailed design stage to meet the maximum impact energy absorption and have a certain strength And the design technology of the lightest shell formwork structure has not been reported

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