Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions
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...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/3616932 |
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| _version_ | 1850169297804984320 |
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| author | Muhammad Zubair Zahid Shahid Ikramullah Butt Tauqeer Iqbal Syed Zohaib Ejaz Zhang Faping |
| author_facet | Muhammad Zubair Zahid Shahid Ikramullah Butt Tauqeer Iqbal Syed Zohaib Ejaz Zhang Faping |
| author_sort | Muhammad Zubair Zahid |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-a810358e95bb44ebb7b8827bd45ef953 |
| institution | OA Journals |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-a810358e95bb44ebb7b8827bd45ef9532025-08-20T02:20:45ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742017-01-01201710.1155/2017/36169323616932Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic ConditionsMuhammad Zubair Zahid0Shahid Ikramullah Butt1Tauqeer Iqbal2Syed Zohaib Ejaz3Zhang Faping4School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology, Islamabad, PakistanSchool of Mechanical and Manufacturing Engineering, National University of Sciences and Technology, Islamabad, PakistanUniversité Catholique de Louvain, Louvain-la-Neuve, BelgiumBirmingham City University, Birmingham, UKSchool of Mechanical Engineering, Beijing Institute of Technology, Beijing, ChinaGun 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.http://dx.doi.org/10.1155/2017/3616932 |
| spellingShingle | Muhammad Zubair Zahid Shahid Ikramullah Butt Tauqeer Iqbal Syed Zohaib Ejaz Zhang Faping Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions International Journal of Aerospace Engineering |
| title | Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions |
| title_full | Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions |
| title_fullStr | Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions |
| title_full_unstemmed | Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions |
| title_short | Nonlinear Material Behavior Analysis under High Compression Pressure in Dynamic Conditions |
| title_sort | nonlinear material behavior analysis under high compression pressure in dynamic conditions |
| url | http://dx.doi.org/10.1155/2017/3616932 |
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