目的探究眼动过程中视乳头各组织几何参数对筛板变形的影响大小及其各因素间的交互作用大小。方法建立参数化的全眼有限元模型,此模型可根据设定的几何参数,自动生成求解器所需的有限元模型输入文件并自动进行求解和后处理;基于参数化...目的探究眼动过程中视乳头各组织几何参数对筛板变形的影响大小及其各因素间的交互作用大小。方法建立参数化的全眼有限元模型,此模型可根据设定的几何参数,自动生成求解器所需的有限元模型输入文件并自动进行求解和后处理;基于参数化有限元模型,调整了九个主要几何参数进行参数研究,运用Design of Experiment试验设计。展开更多
A new method for optimizing a butterfly-shaped linear ultrasonic motor was proposed to maximize its mechanical output. The finite element analysis technology and response surface methodology were combined together to ...A new method for optimizing a butterfly-shaped linear ultrasonic motor was proposed to maximize its mechanical output. The finite element analysis technology and response surface methodology were combined together to realize the optimal design of the butterfly-shaped linear ultrasonic motor. First, the operation principle of the motor was introduced. Second, the finite element parameterized model of the stator of the motor was built using ANSYS parametric design language and some structure parameters of the stator were selected as design variables. Third, the sample points were selected in design variable space using latin hypercube Design. Through modal analysis and harmonic response analysis of the stator based on these sample points, the target responses were obtained. These sample points and response values were combined together to build a response surface model. Finally, the simplex method was used to find the optimal solution. The experimental results showed that many aspects of the design requirements of the butterfly-shaped linear ultrasonic motor have been fulfilled. The prototype motor fabricated based on the optimal design result exhibited considerably high dynamic performance, such as no-load speed of 873 ram/s, maximal thrust of 27.5 N, maximal efficiency of 43%, and thrust-weight ratio of 45.8.展开更多
文摘目的探究眼动过程中视乳头各组织几何参数对筛板变形的影响大小及其各因素间的交互作用大小。方法建立参数化的全眼有限元模型,此模型可根据设定的几何参数,自动生成求解器所需的有限元模型输入文件并自动进行求解和后处理;基于参数化有限元模型,调整了九个主要几何参数进行参数研究,运用Design of Experiment试验设计。
基金Projects(51275235, 50975135) supported by the National Natural Science Foundation of ChinaProject(U0934004) supported by the Natural Science Foundation of Guangdong Province, ChinaProject(2011CB707602) supported by the National Basic Research Program of China
文摘A new method for optimizing a butterfly-shaped linear ultrasonic motor was proposed to maximize its mechanical output. The finite element analysis technology and response surface methodology were combined together to realize the optimal design of the butterfly-shaped linear ultrasonic motor. First, the operation principle of the motor was introduced. Second, the finite element parameterized model of the stator of the motor was built using ANSYS parametric design language and some structure parameters of the stator were selected as design variables. Third, the sample points were selected in design variable space using latin hypercube Design. Through modal analysis and harmonic response analysis of the stator based on these sample points, the target responses were obtained. These sample points and response values were combined together to build a response surface model. Finally, the simplex method was used to find the optimal solution. The experimental results showed that many aspects of the design requirements of the butterfly-shaped linear ultrasonic motor have been fulfilled. The prototype motor fabricated based on the optimal design result exhibited considerably high dynamic performance, such as no-load speed of 873 ram/s, maximal thrust of 27.5 N, maximal efficiency of 43%, and thrust-weight ratio of 45.8.
