摘要
采用以互能和应变能比值作为目标函数的柔性结构拓扑优化方法完成了微夹钳的概念设计.结合具体的夹持对象和工作环境,在微夹钳概念设计基础上确定了微夹钳的最终结构形式.采用有限元法分析了微夹钳的传动比与夹持力,并在万能工具显微镜下测量了微夹钳原型的传动比与夹持力.试验结果表明:当微夹钳钳口尺寸为0.45mm时,微夹钳的平均传动比为22.89,最大夹持力为356.16mN,并且钳口的位移和夹持力与压电陶瓷的输入位移有良好的线性关系,与有限元计算结果基本吻合.这表明连续体拓扑优化方法在微夹钳的设计中有着重要指导作用.
The method of continuum topology optimization by which the ratio of mutual energy to strain energy of the mechanism is regarded as the objective function, is introduced to the conceptual design of microgripper. The final configuration of microgripper is decided on the guide of conceptual design combined with the given clamping objects and working conditions. The finite element method is applied to the analyses of the transmission ratio and clamping force of microgripper. The transmission ratio and clamping force of the microgripper prototype are measured under the universal tool microscope. The experimental results show that the average transmission ratio is 22.89 and the maximum clamping force is 356.16 mN when the default width of gripping jaw is 0.45 mm. The transmission ratio and clamping force of the microgripper possess a good linear relation with the input displacement of the piezoelectric ceramic, which is consistent with that of finite element analysis. This fact indicates that the continuum topology optimization plays an important role in guiding the microgripper design.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2005年第2期210-214,共5页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(重点项目50135040).
