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Predicting the electromechanical properties of small caliber projectile impact igniter using PZT dynamic damage constitutive model considering crack propagation

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Defence Technology（防务技术） 2023年第10期28卷 121-135页

作者： Rui-zhi Wang Zhi-qiang Wang En-ling Tang Lei Li Guo-lai Yang Chun Cheng Li-ping He Ya-fei Han Key Laboratory of Transient Physical Mechanics and Energy Conversion Materials of Liaoning Province Shenyang Ligong UniversityShenyang110159LiaoningChina School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing210094JiangsuChina Key Laboratory of Impact and Safety Engineering Ministry of EducationNingbo UniversityNingbo315211ZhejiangChina

Block piezoelectric ceramics(PZTs)are often used in impact igniters to provide activation energy for electric *** the action of strong impact stress,PZTs release electric energy accompanied by crack initiation,propagation and *** present,the electrical output performance of PZTs in projectile is usually calculated by quasi-static piezoelectric equation without considering the dynamic effect caused by strong impact and the influence of crack propagation on material *** the ignition parameters are always not accurately *** tackle this,a PZT dynamic damage constitutive model considering crack propagation is established based on the dynamic impact test and the crack propagation theory of brittle *** model is then embedded into the ABAQUS subroutine and used to simulate the electromechanical response of the impact igniter during the impact of a small caliber projectile on the ***,the experiments of projectile with impact igniter impact on the target are carried *** comparison between experimental and numerical simulation results show that the established dynamic damage model can effectively predict the dynamic electromechanical response of PZTs in the missile service environment.

关键词： Piezoelectric ceramics Impact igniter Dynamic damage constitutive model Electromechanical response

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Design and experiments of plasma jet igniter for aeroengine

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Propulsion and Power Research 2013年第3期2卷 188-193页

作者： Yubo Guan Guorui Zhao Xinying Xiao AVIC Shenyang Engine Design and Research Institute ShenyangLiaoning 110000China

A plasma jet ignition technology was studied for aeroengine *** advantages of compact stnucture and advanced performance of air-cooled plasma jet igniter had been tested and verified in the opening *** plasma jet igniter could produce a continuous plasma jet,stable and reliable *** influence factors of plasma jet ignition aerodynamic and structure were studied in the opening *** plasma jet was closely related to inlet pressure and flow,simultaneously to the igniter nozzle geometry and throat *** on the stable continuous plasma jet,some methods were explored in order to reduce plasma output power,optimize the structure design,and improve the thermal *** plasma jet igniter applied to aeroengine combustor was identified *** combustion chamber with the igniter,altitude ignition performance were experimented for the inlet pressure of plasma ignition from 10 kPa to 50 kPa,the flow of plasma jet not more than 0.20 g/s,and energy output of ignition from 800 W to 1500 *** test results were compared with that of conventional aeroengine high energy ignition *** results show that the plasma jet igniter is better than the conventional one.

关键词： Aeroengine Plasma igniter Jet Ignition

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Analysis and Improvement of Automotive High Intensity Discharge Lamp Ballast Based on Microcontroller Unit

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Semiconductor Photonics and Technology 2008年第2期14卷 131-135页

作者： CUI Jia, WANG Jian-ming(School of Information and Communication Engineering, Tianjin Polytechnic University, Tianjin 300160, CHN) School of Information and Communication Engineering Tianjin Polytechnic University Tianjin 300160

The superior performance of high intensity discharge（HID） headlamp is clearly shown for luxury sedans, and the lamp luminescence properties are analyzed. The principle of its ballast technology is analyzed in detail. For against the disadvantage of current ballast technology for sedans lamp, a novel type of electronic ballast for HID is designed based on programmable intelligent computer（PIC） microcontroller unit（MCU） and S1A2410M inverter and it provides guidance and can be easily used in control configuration selection and design. The feasibility and superiority of the system are proved.

关键词： HID igniter ballast transformer MCU

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