Design and Force Analysis of the Robot End-effector of a Semi-Automated Laparoscopic Instrument using Finite Element Analysis

Author(s):  
Hisami Takeishi ◽  
Francisco Emmanuel T. Munsayac ◽  
Francheska B. Chioson ◽  
Renann G. Baldovino ◽  
Nilo T. Bugtai
2020 ◽  
Vol 12 (12) ◽  
pp. 168781402097774
Author(s):  
Jiawei Wang ◽  
Fachao Li ◽  
Zibo Chen ◽  
Baishu Li ◽  
Jue Zhu

This paper studies the force and deformation of the connecting channel in Ningbo rail transit construction, which firstly used the mechanical shield method. Steel-concrete composite structural segments are used in the T-joint of connecting channel. The cutting part of the segments are replaced by the concrete and fiberglass instead of reinforced concrete. Basing on a variety of three-dimensional design software and ABAQUS finite element analysis software, a refined finite element analysis model of the special segments is established. By considering the influence of curved joint bolts, the force analysis of the special segments under the structural state before and after construction is performed. According to the analysis and comparison of the deformation of the segments with and without the bolts, it is concluded that the steel-concrete segments can withstand the pressure of the soil before and after the construction. Suggestions for the safety of the design and construction of the segments are put forward.


2014 ◽  
Vol 623 ◽  
pp. 66-72
Author(s):  
Zhe Fang ◽  
Mei Han ◽  
Yu Yi Li

In the article, the study focus on the computer aid finite element analysis of the rolled-steel pallet. The value of various parameters is determined by the force analysis according to the relevant standard in working condition of shock. Meshing the modal and defining the force and constraint are discussed before the simulation. The calculated value based on Ansys is very similar to the result in the actual situation, which proved that the computer aid analysis can be used in the rolled-steel pallet detection in order to decrease the cost and increase the accuracy.


2014 ◽  
Vol 716-717 ◽  
pp. 553-556
Author(s):  
Dong Yu Ji

This paper adopts general finite element software to carry out structure design and force analysis for Liujiaba inverted siphon engineering, researching variation law of the inverted siphon’s stress and displacement under various cases in construction process and operating process. Research results provides reliable reference for construction and operating of inverted siphon structure.


2013 ◽  
Vol 394 ◽  
pp. 353-356
Author(s):  
Dongy Yu Ji

This paper adopts universal finite element calculation software to carry out force analysis for Nanping trench-buried inverted siphon,computer is applied in analysis of trench-buried inverted siphon. Deducing variation law of the inverted siphons stress and displacement in construction process and operational process. The calculation results further shown design schemes rationality and safety. which provide reliable reference of design and construction for the trench-buried inverted siphon.


2012 ◽  
Vol 215-216 ◽  
pp. 1197-1200 ◽  
Author(s):  
Lei Lei ◽  
Xiao Chun Shi ◽  
Tian Min Guan

In order to validate the force analysis between cycloid gear and pin wheel, the paper built the contact FEM model of between cycloid gear and pin teeth, analyzed statically three-dimensional contact analysis for them and get their contact state. The calculation results coincided with the force analysis method and proved the correctness of the stress analysis theory.


2011 ◽  
Vol 422 ◽  
pp. 438-442
Author(s):  
Mei Fa Huang ◽  
Wei Zhao Luo ◽  
Guang Qian

Propeller is one of the critical parts in garbage powder mixer and affect significantly to the performance. In order to obtain a more reasonable structure, force analysis and stress analysis is carrier out for the propeller based on the actual working condition. Optimal design for the propeller is implemented by the results of stress analysis. To verify the rationality and feasibility of this mechanism, the finite element analysis for the propeller is performed by using the ANASYS software. The simulation results show that the maximum stress of the propeller is on the joint of blade and rod. The optimized propeller is satisfied with the strength requirements.


2013 ◽  
Vol 694-697 ◽  
pp. 133-136
Author(s):  
S.Q. Xin ◽  
J.G. Jiang ◽  
L. Luo ◽  
F.C. Zhao ◽  
J. Li

Taking the sand grab bucket for example, the motion and force situation of the grab mechanism is analyzed with the software SolidWorks. First 3-D model of the grab mechanism was built, second finite element model of grab was built, finally motion and force analysis was carried out with post-processing module. The instance study shows, finite element analysis method based on SolidWorks Simulation helps to improve the quality and efficiency of product design in practice.The results will provide reference for design of grab bucket in future.


2007 ◽  
Vol 353-358 ◽  
pp. 1927-1930
Author(s):  
Guo Shun Ji ◽  
Wen Wang ◽  
Yan Jun Huang ◽  
Zi Chen Chen

The leather is cut by hand or by hand with some help of semiautomatic machine in general leather cutting technology. In order to enhance the cutting efficiency and quality, the machine tool to realize high speed automatic leather cutting was developed. The final goal of the design is to cut a piece of hide on a working table with cutting velocity 2 meters per second, the dimension of the machine tool is big. It is very difficult to design the frame of this machine tool to meet the performance index for high speed cutting, so the static and dynamic force analysis to the body of it was implemented. First, the digital model of the body of it was built with AutoCAD software, then, the digital model in IGES format was transmitted to the Ansys software and the finite element analysis to it were carried out. Because the static force and vibration from driving system have great influence on the deformation of this machine tool and this deformation will affect the cutting precision and the whole performance of it. So the static force analysis and modal analysis were carried out. Finally, the results of finite element analysis were discussed, corresponding modification to the design was proposed. The analysis results indicate the mechanical property of the body of the developed machine can meet the requirements for high speed cutting.


2014 ◽  
Vol 543-547 ◽  
pp. 241-244
Author(s):  
Yu Bao Zhang ◽  
Chang Shun Luan ◽  
En Hui Zhang

The dump truck in coal mine, mountain and other bad conditions of overload transportation, the turning shaft often breaks, through material analysis of dump truck turning shaft and method of theoretical calculation and finite element analysis, making force analysis to the stress concentrated area, find the reasons for turning shaft fracture.


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