Electret microphone modeling and optimization by combined finite element analysis and lumped-element techniques

2013 ◽  
Vol 133 (5) ◽  
pp. 3411-3411
Author(s):  
David Schafer
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Modeling And Optimization ◽  
Lumped Element ◽  
Electret Microphone

scholarly journals Modeling and Optimization of Pulling Point Position of Luffing Jib on Portal Crane

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Qianqian Jiao ◽  
Yixiao Qin ◽  
Yuehuang Han ◽  
Jinpeng Gu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Function Optimization ◽  
Element Analysis ◽  
Modeling And Optimization ◽  
Point Position ◽  
Cargo Handling ◽  
The Finite Element Analysis ◽  
Portal Crane

Portal crane is the most commonly used equipment for cargo handling of large mixed loading ships with its advantages of flexible and convenient operation, wide adaptability, and high loading and unloading efficiency. The reasonable modeling and optimization of the pulling point position of luffing jib of portal crane can reduce the rack force of portal crane and the power consumption output of the rack and pinion during the luffing process. Based on penalty function optimization, the interior point method is used to optimize the pulling point position of luffing jib. Compared with the initial design, the race force of the luffing jib is reduced to a certain extent. In addition, the consistency between the finite element analysis results and the optimization results can be verified, and the effectiveness of the optimization design is also proved through the finite element analysis of portal crane.

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