Structural Design and Finite Element Analysis of Unfolding Process for All Composite Folding Wing of UAV

2010 ◽  
Vol 163-167 ◽  
pp. 2328-2332 ◽  
Author(s):  
Peng Lv ◽  
Sheng Li Lv ◽  
Guang Jun Yang ◽  
Qing Na Zeng ◽  
Xiao Yan Tong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Third Order ◽  
Element Analysis ◽  
Impact Action ◽  
Flutter Analysis ◽  
Folding Wing ◽  
Overall Performance ◽  
Composite Wing

This paper discusses the unfolding form of the folding wing and its application to special UAV. The main investigations involve aspects such as unfolding process of the special UAV’s folding wing, contour structure of the complete unfolding, the choice of composite materials for the folding wing and its overall performance parameters. Modeling and dynamics analysis are made for all-composite wing through finite element analysis and calculating software. The unfolding process is also simulated. The result shows that the wing’s first-order frequency is low, second-order frequency and third-order frequency are close at different sweep angles. The wings are apt to happen flutter coupling in flutter analysis. With the continued folding of the wing, the wing’s natural frequency decreases significantly at different orders. The conclusions can provide effective basis for the study of wing rotational rate, unfolding time and impact action.

The Finite-Element Analysis of the Main Frame of the Airborne Photoelectric Platform

2012 ◽  
Vol 562-564 ◽  
pp. 1943-1946
Author(s):  
Yong Hu ◽  
Jin Gan Song ◽  
Qing Zou ◽  
Ke Zhu ◽  
Xiao Long Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Weak Links ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Overall Performance ◽  
Sufficient Strength ◽  
Ansys Workbench ◽  
Main Frame

Because both of the volume and the weight of the photoelectric platform are small, the structure of two frames and two axes is used in the photoelectric platform. As the key component of the photoelectric platform, the main frame should have sufficient strength and rigidity. In order to achieve this object, three-dimensional entity model of the main frame is established using CATIA software. Then the finite-element analysis of the model is finished with ANSYS Workbench. Based on the analysis results, the weak links of the main frame is found. Then these links are improved and the main frame is analyzed again. After improving the structure, the results of the finite-element analysis show that the main frame meets the requirements of design and has perfect overall performance.

Structure Analysis of Electron Gun Deflection Coil Based on ProE and ANSYS

2011 ◽  
Vol 201-203 ◽  
pp. 1352-1355
Author(s):  
Hai Lang Liu ◽  
Rui Bin Zhang ◽  
Yi Ping Huang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structure Analysis ◽  
Structural Design ◽  
Electron Gun ◽  
Structure Modeling ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Coil Size

Through the example of the electron gun deflection coil, this paper implements the structure modeling with ProE and makes the finite element analysis with ANSYS .The structure analysis is performed by the combination of the advantages of two softwares. The reasonableness of the design is verified. This method helps to optimize the structural design of the coil. The production of precision of the coil was improved, and coil size can effectively control and reduce material waste.

Torsional Strength Analysis of Output Shaft in Portal Axle Using Finite Element Analysis

2013 ◽  
Vol 284-287 ◽  
pp. 996-1000 ◽  
Author(s):  
Jong Boon Ooi ◽  
Xin Wang ◽  
Ying Pio Lim ◽  
Ching Seong Tan ◽  
Jee Hou Ho ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Experimental Results ◽  
Strength Analysis ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Torsional Strength ◽  
Overall Performance

Portal axle unit is a gearbox unit installed on every end axles of the vehicle. It is installed to the vehicle to give higher ground clearance to enable vehicle to go over large obstacle when driving in off-road conditions. Shafts must be exceptionally tough and lightweight to improve the overall performance of the portal axle unit. In this paper, the shaft is analyzed in three-dimensional model and the stress of the shaft model is analyzed using finite element analysis (FEA). The FEA result is compared with experimental results.

The Track Structural Design and Finite Element Analysis of the Track Type Thinning Shredder

2012 ◽  
Vol 490-495 ◽  
pp. 2888-2892
Author(s):  
Yan Wu ◽  
Yan Ma
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Three Dimensional ◽  
Soft Ground ◽  
Mechanical Motion ◽  
Element Analysis ◽  
Development Cycle ◽  
Speed Up ◽  
Forestry Industry

Using the powerful parametric features of Pro/E modeling for the assembly of the track board, and building up Three-dimensional solid modeling. Finite element analysis with the simulation of mechanical motion to simulate the track through the soft ground of the forest were carried out. It can significantly reduce the design costs and speed up the development cycle to adapt of the requirements of the modern forestry industry.

Strength Analysis and Structural Design Improvement of the Drill Floor of a Self-Elevating Drilling Unit

2015 ◽  
Author(s):  
Qi Wang ◽  
Ji Zeng ◽  
Yong Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Structural Strength ◽  
Element Analysis ◽  
Environmental Loads ◽  
Design Improvement ◽  
The Finite Element Analysis ◽  
Floor Structure ◽  
Drilling Unit

The self-elevating drilling units are widely used in the offshore industry for oil and gas exploration. The drill floor structure is the main part of the drilling package for a self-elevating drilling unit due to its key function. Its structural strength checking is of great significance on account of the special structure features and the complex combined loading conditions it suffers. The sufficient structural strength of the drill floor is the base and guarantee for safe drilling and extraction. The finite element method was applied to calculate the structural strength of the drill floor directly considering different load cases which was the combination of environmental loads, permanent loads, variable function loads, and reaction forces from structures and equipments. Total forty load cases were set in the finite element analysis. A detailed finite element model without simplification of the drill floor was built correctly so that it can show the accurate stiffness of the real structure. Based on this model, the design method and the design criterion of the drill floor were described in detail. The environmental loads were calculated according to ABS MODU rules. The influence of the direction of the environmental loads on the drill floor were studied and concluded. Since the drill floor was not just welding with the cantilever beam, the boundary conditions were also particularly introduced owning to the complex connection between them. After finite element analysis and calculation, the stress distribution of the whole drill floor which includes the main girders and derrick supports were obtained. The locations with high stress were found so those places should be paid more attention. The curves which show the stress variation according to the environment loading direction were drawn and their characteristics were found. The load case and the load which have the main effect on drill floor structure were found. As a result, the suggestions for design improvement were put forward for the structural design, and the finite element analysis was run again to test and verify the design improvement. This paper can provide meaningful guidance for the future design of the drill floor.

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