Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Research on rotational angular velocity of preformed fragments
View through CrossRef
Abstract
The rotational angular velocity of fragments under the driver of explosive products makes the fragments constantly flip during the trajectory, which has a huge effect on the velocity decay of the fragments. In order to more accurately calculate the residual velocity of the fragments during flight, it is necessary to study the rotational angular velocity of the fragments. Based on the paper target system, an experimental method for measuring the angular velocity of fragments is proposed. By using ANSYS/LSDYNA finite element software, the rotational angular velocity of preformed fragments under explosion is studied. A new meshing method is proposed to simulate the driven process of the explosive products on the fragments more accurately. The experimental results and the numerical simulation results are considered to be consistent within the margin of error. And at last, the distribution of fragment is studied base on numerical simulation. The research results provide a foundation for studying the trajectory of preformed fragments after explosive driven.
Title: Research on rotational angular velocity of preformed fragments
Description:
Abstract
The rotational angular velocity of fragments under the driver of explosive products makes the fragments constantly flip during the trajectory, which has a huge effect on the velocity decay of the fragments.
In order to more accurately calculate the residual velocity of the fragments during flight, it is necessary to study the rotational angular velocity of the fragments.
Based on the paper target system, an experimental method for measuring the angular velocity of fragments is proposed.
By using ANSYS/LSDYNA finite element software, the rotational angular velocity of preformed fragments under explosion is studied.
A new meshing method is proposed to simulate the driven process of the explosive products on the fragments more accurately.
The experimental results and the numerical simulation results are considered to be consistent within the margin of error.
And at last, the distribution of fragment is studied base on numerical simulation.
The research results provide a foundation for studying the trajectory of preformed fragments after explosive driven.
Related Results
Study on the fastening characteristics of preformed helical fittings considering the surface effect of transmission lines
Study on the fastening characteristics of preformed helical fittings considering the surface effect of transmission lines
AbstractBecause of their superior mechanical properties, preformed helical fittings are widely used in UHV transmission lines. However, they easily slip and become loose under extr...
Defining the Consistent Velocity of Omnidirectional Mobile Platforms
Defining the Consistent Velocity of Omnidirectional Mobile Platforms
The maximum linear (or translational) velocity achievable by an omnidirectional platform is not uniform as it depends on the angular orientation of the motion. This velocity is lim...
Internal Structure and Dynamical Evolution of Ceres
Internal Structure and Dynamical Evolution of Ceres
Introduction:
Ceres, the largest body in the asteroid belt, became the first dwarf planet orbited by a spacecraft when NASA’s Dawn mission arrived in 2015. Located at 2.767 AU from...
Maximal Rotational Velocity of Fluid Elements (ΩFluidMAX): A New Perspective on Turbulent Singularities
Maximal Rotational Velocity of Fluid Elements (ΩFluidMAX): A New Perspective on Turbulent Singularities
The classical Navier-Stokes (NS) equations, rooted in the continuum hypothesis, essentially extend Newton’s second law to describe fluid motion. However, in their standard derivati...
Imaging Velocity of Pre-Stack Depth Migration in Steep and Complicated Structures
Imaging Velocity of Pre-Stack Depth Migration in Steep and Complicated Structures
Abstract
During the processing of pre-stack depth migration (PSDM) of seismic data in complex structures in western China, an anomaly of interval velocity inconsi...
ON THE MECHANISM OF ICE MELTING
ON THE MECHANISM OF ICE MELTING
Based on the theory of the Jahn-Teller effect (JTE), a model of a possible mechanism of ice melting is proposed. The increase in the heat capacity of ice near 0 ⁰C by 1.5 times, co...
Pre-Drilling Pore Pressure Prediction Technique Based on High-Quality OBN Seismic Velocity and its Application in K Oilfield
Pre-Drilling Pore Pressure Prediction Technique Based on High-Quality OBN Seismic Velocity and its Application in K Oilfield
Abstract
Pre-drilling pore pressure prediction based on seismic velocity is a critical step in the oil and gas industry to ensure drilling safety and optimize well c...
Study on the difference of rice-wheat rotation system greenhouse gas estimation by different simulation methods
Study on the difference of rice-wheat rotation system greenhouse gas estimation by different simulation methods
Global warming, mainly caused by greenhouse gas (GHG) emissions, is one of the major concerns of the current society. Accurate estimation of GHG emissions in various fields can hel...