Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions
Joint Authors
Zhang, Faping
Butt, Shahid Ikramullah
Zahid, Muhammad Zubair
Iqbal, Tauqeer
Ejaz, Syed Zohaib
Source
International Journal of Aerospace Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-29
Country of Publication
Egypt
No. of Pages
15
Abstract EN
Gun chamber pressure is an important parameter in proofing of ammunition to ensure safety and reliability.
It can be measured using copper crushers or piezoelectric sensor.
Pressure calculations in copper crusher method are based on linear plastic deformation of copper after firing.
However, crusher pressure deformation at high pressures deviates from the corresponding values measured by piezoelectric pressure transducers due to strain rate dependence of copper.
The nonlinear deformation rate of copper at high pressure measurements causes actual readings from copper crusher gauge to deviate from true pressure values.
Comparative analysis of gun chamber pressure was conducted for 7.62 × 51 mm ammunition using Electronic Pressure, Velocity, and Action Time (EPVAT) system with piezoelectric pressure transducers and conventional crusher gauge.
Ammunitions of two different brands were used to measure chamber pressure, namely, NATO standard ammunition and non-NATO standard ammunition.
The deformation of copper crushers has also been simulated to compare its deformation with real time firing.
The results indicate erratic behavior for chamber pressure by copper crusher as per standard deviation and relative spread and thus prove piezo sensor as more reliable and consistent mode of peak pressure measurement.
The results from simulation, cost benefit analysis, and accuracy clearly provide piezo sensors with an edge over conventional, inaccurate, and costly method of copper crusher for ballistic measurements due to its nonlinear behavior.
American Psychological Association (APA)
Zahid, Muhammad Zubair& Butt, Shahid Ikramullah& Iqbal, Tauqeer& Ejaz, Syed Zohaib& Zhang, Faping. 2017. Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions. International Journal of Aerospace Engineering،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1157988
Modern Language Association (MLA)
Zahid, Muhammad Zubair…[et al.]. Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions. International Journal of Aerospace Engineering No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1157988
American Medical Association (AMA)
Zahid, Muhammad Zubair& Butt, Shahid Ikramullah& Iqbal, Tauqeer& Ejaz, Syed Zohaib& Zhang, Faping. Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions. International Journal of Aerospace Engineering. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1157988
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157988