摘要
大臂是某武装侦察机器人武器站的主要承力部件与质量来源,为兼顾该结构的可靠性和轻量化要求,通过Hyper Mesh与Opti Struct对其进行了有限元优化设计。运用有限元方法分析了原结构在3种典型射角下,载荷对结构静强度和位移的影响。在此基础上选用密度更小的6061铝合金代替原结构材质45钢建立新的拓扑优化模型,以相对密度为设计变量,以体积最小化为目标函数进行了拓扑优化,得到优化结构。通过与试验样机对比,优化后的方案不仅在满足强度要求的前提下获得了更为合理的结构形式,而且大幅度降低了平台质量,使其便于在战争中轻装携带与快速投送。该设计可为同类型小型作战平台的优化设计提供一定的理论与工程借鉴。
Arm is the main bearing part of a certain armed reconnaissance robot weapon station and makes up most of its weight. In order to achieve the reliability and weight reduction, the finite element optimal design is carried out by Opti Struct and Hyper Mesh. First of all, the original structure is analyzed under three typical shooting angles by the means of finite element to discover the effects of load on static structural strength and displacement. On the basis of that, a new topology optimization model, which is based on a smaller-density material-the 6061 aluminum alloy, is established to replace 45 steel. Regarding the relative density as the design variable, with the objective function of minimizing the volume, the optimization model is attained. By comparison with experimental prototype, the optimized scheme has completed a more reasonable structure under the prerequisite of satisfying the strength requirement, greatly reducing the weight of the platform and making it easier and lighter to carry and deliver in the war. All in all, this research can provide a theoretical and engineering reference to the optimal design of the same type of small operational platform.
出处
《兵工自动化》
2016年第5期76-79,87,共5页
Ordnance Industry Automation
关键词
武装侦察机器人
武器站
大臂
有限元
优化设计
armed reconnaissance robot
weapon station
upper arm
finite element
optimization design
