| Vibration Control of High-speed Cannonball Transport Mechanism Driven by Impact |
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| 作者姓名： | 王国庆 刘宏昭 何长安 杨松峰 |
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| 作者单位： | [1]NorthwesternPolytechnicalUniversity,Xi＇anShaanxi710072,China [3]Xi＇anUniversityofTechnology,Xi＇anShaanxi710046,China [4]Xi＇anKunLunMachineryFactory,Xi＇anShaanxi710072,China [5]NorthwesternPolytechnicalUniversity,Xi＇anShaanxi710072,China／／MinistryofEducationKeyLaboratoryForTechnologyandEquipmentofHighwayConstruction,Chang＇anUniversity,Xi＇anShaanxi710064,China |
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| 摘 要： | A method is presented to control the vibration of high-speed cannonball transport mechanism due to the reduction of its weight, which adhere a nonlinear Zn-27Al-1Cu damping alloy layer and a constraint layer partly to the part of mechanism driven by impact. Based on the equivalent viscous damping theory and using curve fitting to describe the rule of the dissipation factor of damping alloy changing with stress, the nonlinear constitutive relation of Zn-27Al-1Cu damping alloy is given. The nonlinear spring damping contact model is adopted to describe the contact force of the clearance joint.Based on the nonlinear finite element contact theory, the outer impact contact force between the mechanism and its working environment is analyzed, and a coupled dynamic model of structural impact and mechanism motion with clearance joint is put forward. A dynamic model is established for the cannonball transport mechanism partly adhering Zn-27Al-lCu damping alloy layer and constraint layer under complex impact conditions. At last, the feasibility of the method presented is proved by numerical simulation.
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| 关 键 词： | 变量控制 高速炮弹传输 冲击接触驱动 阻尼合金 自行加农炮 |
Vibration Control of High-speed Cannonball Transport Mechanism Driven by Impact |
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| WANG Guo-qing,LIU Hong-zhao,HE Chang-an,YANG Song-feng.Vibration Control of High-speed Cannonball Transport Mechanism Driven by Impact[J].Journal of China Ordnance,2005,1(1):122-128. |
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| Authors: | WANG Guo-qing LIU Hong-zhao HE Chang-an YANG Song-feng |
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| Abstract: | A method is presented to control the vibration of high-speed cannonball transport mechanism due to the reduction of its weight, which adhere a nonlinear Zn-27Al-1Cu damping alloy layer and a constraint layer partly to the part of mechanism driven by impact. Based on the equivalent viscous damping theory and using curve fitting to describe the rule of the dissipation factor of damping alloy changing with stress, the nonlinear constitutive relation of Zn-27Al-1Cu damping alloy is given. The nonlinear spring damping contact model is adopted to describe the contact force of the clearance joint.Based on the nonlinear finite element contact theory, the outer impact contact force between the mechanism and its working environment is analyzed, and a coupled dynamic model of structural impact and mechanism motion with clearance joint is put forward. A dynamic model is established for the cannonball transport mechanism partly adhering Zn-27Al-1Cu damping alloy layer and constraint layer under complex impact conditions. At last, the feasibility of the method presented is proved by numerical simulation. |
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| Keywords: | contact drive damping alloy vibration control automatic weapon Impact Driven Transport Mechanism Control feasibility numerical simulation established complex conditions coupled dynamic model structural motion forward working environment nonlinear finite element contact theory spring damping |
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