ANSYS-based trajectory motion simulation method in projectile under forced angular vibration condition

Abstract

The invention realizes a three-dimensional simulation method for simulating a trajectory motion state and a flow field distribution condition in a projectile under a forced angular vibration conditionby using a bidirectional fluid-solid coupling technology on the basis of an ANSYS software platform. The process from the movement of the projectile in the chamber to the discharge of the projectileout of the chamber is a high-temperature, high-pressure and multi-chemical reaction process, and the actual experimental measurement is difficult. The process is simulated by using a numerical simulation technology, so that the analysis of the motion state and the flow field change of the projectile in the chamber is facilitated. According to the method, a cannon barrel forced angular vibration equation is introduced by using a bidirectional fluid-solid coupling numerical simulation method, and numerical simulation is carried out on the process that the projectile is moved from the static state to the out-of-bore state under the forced angular vibration condition. The result obtained through simulation of the method is beneficial to research of the motion state of the launched projectile and the distribution situation of the flow fields inside and outside the chamber when forced angular vibration is generated in the advancing process of the artillery, and certain significance is achieved for research and development of self-propelled weaponry.

Description

technical field [0001] The invention relates to two-way fluid-solid coupling technology, in particular to an ANSYS-based method for simulating internal ballistic motion of projectiles under the condition of forced angular vibration. Background technique [0002] The shooting capability of self-propelled weapons during marching has become an important index to evaluate the combat performance of self-propelled weapons. In order to meet the needs of the actual situation on the battlefield, self-propelled weapons with artillery need to launch projectiles during high-speed travel, and due to the influence of road excitation during launch, it usually causes certain random vibrations. Random vibration is a complex motion formed by the joint action of various vibration modes. Among them, the forced angular vibration will have a significant impact on the motion of the projectile, which will lead to a decrease in the accuracy of the projectile. Using the two-way fluid-solid coupling...

AI Technical Summary

Problems solved by technology

This method can be used to analyze the friction, force and deformation between the gun barrel and the projectile during the vibration process, but there is no flow field, and the effect of the flow field on the projectile cannot be considered at the same time

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