Vibration Modal Analysis of DTG under Space Environment

2015 ◽  
Vol 757 ◽  
pp. 39-43
Author(s):  
Jian Feng Guo ◽  
Yi Na Feng ◽  
Yi Tao ◽  
Zhong Bao Qin ◽  
Chang Jiang Liu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Element Model ◽  
Space Environment ◽  
Finite Element Software ◽  
Vibration Modal

Finite element model of dynamic tuned gyroscope (DTG) was founded using finite element software of ANSYS. Natural frequencies and vibration modalities of DTG in cases of both being static and rotating were studied respectively through the method of modal analysis, and also various vibration modalities influence on output of gyroscope was analyzed.

Modal Analysis and Experimental Research of Marine Gearbox

2014 ◽  
Vol 607 ◽  
pp. 405-408 ◽  
Author(s):  
Wen Liu ◽  
Teng Jiao Lin ◽  
Quan Cheng Peng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Experimental Research ◽  
Natural Frequencies ◽  
Element Model ◽  
Ansys Software ◽  
Tetrahedral Element ◽  
Spring Element ◽  
Good Agreement

The gear-shaft-bearing-housing coupled finite element model of marine gearbox was established by using the truss element, the spring element and the tetrahedral element. The modal of gearbox was analyzed by using the ANSYS software. Then through the experimental modal analysis, the natural frequencies of gearbox are obtained. Compare the experimental results with the numerical results, it shows good agreement.

Modal Analysis of Dynamically Tuned Gyroscope Based on ANSYS11.0

2012 ◽  
Vol 152-154 ◽  
pp. 1183-1186
Author(s):  
Zhong Bao Qin ◽  
Guang Bin Liu ◽  
Jian Feng Guo ◽  
Xiao Long Hu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Element Model ◽  
Vibration Model

This paper proposed a method to analyses and obtain the vibration identities of DTG(Dynamically Tuned Gyroscope) within the vibration-overloading environment based on ANSYS11.0. Finite element model of DTG was constructed by ANSYS11.0. The Natural Frequencies and vibration modals of DTG in the cases of both being stationary and rotating were studied respectively through the method of modal analysis. The influence of each-rank vibration model of DTG on its output was investigated. The result of this paper provides a stable basis for improving the design of DTG and enhancing the functions of it.

Modal Analysis of Arrow Shaped Shovel Based on ANSYS Workbench

2013 ◽  
Vol 385-386 ◽  
pp. 296-299
Author(s):  
Xu Hong Chu ◽  
Jun Fa Wang ◽  
Ren Bao Jiao ◽  
Hai Yang Wu ◽  
Li Fei Zhou
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Natural Frequencies ◽  
Element Model ◽  
Maximum Deformation ◽  
Constraint Processing ◽  
Odd Order ◽  
The Finite Element Model ◽  
Ansys Workbench

In order to optimize the kinetic parameters of arrow shaped shovel, the paper carried on the modal analysis and the 3D graph was drawing by the application of Pro/E software. The finite element model was established by using ANSYS Workbench. After the constraint processing, the first six model shapes of the rack were obtained through the modal analysis of arrow shaped shovel. Based on the modal analysis, it can be found that the first six natural frequencies enlarge with the increase of the order, and the odd order of principal modes are horizontal hunting along shovel handle on both sides, the even orders are up and down perpendicular to horizontal direction. The maximum deformation of the first six model of the rack occurs at shovel head. The results present a theoretical reference for improving and optimizing the shovel.

Simulation Analysis of Isolation about Spray Boom

2014 ◽  
Vol 900 ◽  
pp. 742-745 ◽  
Author(s):  
Yao Jie He ◽  
Bai Jing Qiu ◽  
Ya Fei Yang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Simulation Analysis ◽  
Element Model ◽  
The Finite Element Model

In order to attenuate the deformation of spray boom, a finite element model built based on ANSYS, according to the reasults of numerical modal analysis and modal texting, the reliability of the finite element model was affirmed. Then, an isolator was introduced between spray boom and frame, a frame-isolator-spray boom model was built in ADAMS. The effect of the isolators which have different parameters was research, the reasult shows: The isolator has much effect on attenuating spray booms deformation, the stiffness of isolators spring dampers has little effect on spray booms deformation, but the damping of isolators spring dampers has effect on spray booms deformation.

Mechanical Analysis of Porous Concrete Base in Asphalt Pavement

2012 ◽  
Vol 443-444 ◽  
pp. 751-756
Author(s):  
Li Jun Suo ◽  
Xia Guang Hu
Keyword(s):  
Finite Element ◽  
Thermal Stress ◽  
Finite Element Model ◽  
Design Method ◽  
Asphalt Pavement ◽  
Element Model ◽  
Three Dimension ◽  
Porous Concrete ◽  
Finite Element Software ◽  
Concrete Base

In China, it is fact that porous concrete base has been used in the construction of asphalt pavement in recent years because porous concrete base has good performance. However, Reasonable design method has not been put forward so far. Therefore, it is necessary to analyze load stress and thermal stress of asphalt pavement which includes porous concrete base in order to put forward theoretical basis for pavement design method. In the paper, three–dimension finite element model of asphalt pavement, which includes porous concrete base and asphalt surface, is created for the purpose of studying load stress and thermal stress of porous concrete base in asphalt pavement. Based on numerical method of three–dimension finite element model, finite element software, such as ANSYS, is employed to study load stress and thermal stress of porous concrete base in asphalt pavement. After that, the effect of different factors on stress is studied, and the factors include thickness of surface, thickness of base and ratio of base’s modulus to foundation’s modulus. Finally, calculation results for stress are compared with each other, and it shows that load stress of porous concrete base decreases with increase of base’s thickness, while thermal stress of porous concrete base increases with increase of base’s thickness. Load stress and thermal stress of porous concrete base decrease with increase of surface’s thickness. Load stress and thermal stress of porous concrete base increase with increase of ratio of base’s modulus to foundation’s modulus.

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