Dynamic analysis of an axially moving beam subject to inner pressure using finite element method

Hua, Hongliang; Qiu, Ming; Liao, Zhenqiang

doi:10.1007/s12206-017-0509-2

Cited by 14 publications

(7 citation statements)

References 46 publications

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“…The muzzle vibration characteristics determine the bullet muzzle velocity, so calculating the muzzle movement correctly is the key to analyzing the firing dispersion and the firing density [7,8] . The gun body was mounted on a flexible mount, so the mount vibration directly affected the gun body vibration [9,10] . The deformation of the barrel and the mount affects the system vibration, so the barrel and the mount must be designed as flexible parts instead of rigid parts.…”

Section: Introductionmentioning

confidence: 99%

Launch Dynamics Analysis of a Grenade Machine Gun with High Muzzle Velocity Based on the Soft Recoil Technology

Song

Liao

et al. 2023

J. Phys.: Conf. Ser.

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To study the dynamic performance of a grenade machine gun system with soft recoil technology and analyze the floating mechanism parameters affecting the firing dispersion, a rigid-flexible coupling multi-body dynamics model was established. A twenty-round firing process of the grenade machine gun system was simulated and analyzed. The firing dispersion of the grenade machine gun system was obtained based on the external ballistics model, and the simulation model was validated by comparing the numerical results with the experimental data. The effects of the floating mechanism parameters on the cradle force, the projectile dispersion, and the firing dispersion sparsity were discussed. The results show that the projectile dispersion of the GMG system is well predicted by the simulation model, and the floating parameters that are matched reasonably could improve the firing dispersion and reduce the gun recoil force.

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Section: Introductionmentioning

confidence: 99%

Launch Dynamics Analysis of a Grenade Machine Gun with High Muzzle Velocity Based on the Soft Recoil Technology

Song

Liao

et al. 2023

J. Phys.: Conf. Ser.

Self Cite

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“…A unique way is to use pressure canister mechanism, which can produce less vibration and recoil force compared to the normal chemical propellant. The internal ballistics of the gun is analyzed using special codes to calculate the peak pressure and muzzle velocity [8]. But with pressure canister mechanism, we can eliminate the use of complex ballistics code and common Navier stokes equations are solved.…”

Section: Introductionmentioning

confidence: 99%

Vibrational Analysis of Mini - Unmanned Aerial Vehicles due to Gun Recoil

Nelson

Siva

2023

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In 21st century, battlefields are being occupied by Artificial Intelligence (AI) controlled machines and one of its kind is mini-unmanned aerial vehicles. Upon arming the mini-UAVs, the load distribution and characterizing the vibrational behavior are important for its safe operation. Usually, the gun recoil force gets transferred to the platform of the mini-UAV, leading to instability or failure of the platform along with the gun. Mini-UAVs being too small don’t have the space to set the conventional recoil reduction mechanism. So, it is important to design a mechanism or alternative propellant for achieving the equivalent explosive force instead of TNT. Also, the influence of explosion on the vibration characteristics of the mini-UAV is studied. The high-pressure gas is found as the best alternative to TNT material, for reducing the deflection produced. This work primarily concentrates on determining the deflection and frequency induced in mini-UAVs. By using a pressure canister arrangement, the vibration characteristics under recoil can be improved.

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“…In addition, the increasing demands placed on modern weapons have brought the issue of barrel vibration into focus. Considering the influence of the transient flow of gunpowder on the transverse vibration of the hollow beam [5][6], the idea of using a nozzle to control the vibration of the barrel is proposed.…”

Section: Introductionmentioning

confidence: 99%

Research on Vibration Control of Paired Inclined Nozzles Dynamic Coupled Tubes

Qiu

Liao

Song

et al. 2023

J. Phys.: Conf. Ser.

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The barrel vibrates violently, which will lead to a serious drop in shooting accuracy. To solve this issue, a barrel vibration control method of the paired oblique nozzle dynamic couple is proposed. A pair of inclined nozzle devices are designed on the barrel to fully use the gunpowder gas energy in the chamber during the shooting process. A dynamic couple is generated to balance the turning moment of the barrel weapon. Simultaneously, the recoil force is reduced by exporting the gunpowder gas in the chamber. Therefore, the vibration of the barrel is reduced. Firstly, the internal ballistic two-phase flow model including the gas transient flow model in the vibration control device is modelled based on the internal ballistic theory of two-phase flow. Secondly, the numerical simulation of the weapon launching process is carried out. Thirdly, the rigid-flexible coupling firing dynamics modelling and simulation research is conducted on a 30mm chain gun equipped with a paired oblique nozzle dynamic couple vibration control device. At last, the effects of the device on the continuous firing vibration control of barrel weapons are analyzed. The results show that the vibration reduction efficiency of the inclined nozzle is better than that of the vertical nozzle and the horizontal nozzle. When the angle of the inclined nozzle is 30°, the barrel shows the highest vibration reduction efficiency. The vibration reduction efficiency of each vibration characteristic is 39.2%, 17.1%, 44.8%, and 48.9%, respectively.

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Dynamic analysis of an axially moving beam subject to inner pressure using finite element method

Cited by 14 publications

References 46 publications

Launch Dynamics Analysis of a Grenade Machine Gun with High Muzzle Velocity Based on the Soft Recoil Technology

Launch Dynamics Analysis of a Grenade Machine Gun with High Muzzle Velocity Based on the Soft Recoil Technology

Vibrational Analysis of Mini - Unmanned Aerial Vehicles due to Gun Recoil

Research on Vibration Control of Paired Inclined Nozzles Dynamic Coupled Tubes

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