期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Vibration Control of High-speed Cannonball Transport Mechanism Driven by Impact
1
作者 王国庆 刘宏昭 +1 位作者 何长安 杨松峰 《Defence Technology(防务技术)》 SCIE EI CAS 2005年第1期122-128,共7页
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... 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. 展开更多
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
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部