Thermoplastic sandwich structure design and manufacturing for the body panel of mass transit vehicle

2007 ◽  
Vol 80 (1) ◽  
pp. 82-91 ◽  
Author(s):  
Haibin Ning ◽  
Gregg M. Janowski ◽  
Uday K. Vaidya ◽  
George Husman
Keyword(s):  
Sandwich Structure ◽  
Mass Transit ◽  
Structure Design ◽  
The Body ◽  
Design And Manufacturing ◽  
Body Panel

A Parametric Study of Low-Frequency Damping of Mooring System

2014 ◽  
Author(s):  
Minglu Chen ◽  
Shan Huang ◽  
Nigel Baltrop ◽  
Ji Chunyan ◽  
Liangbi Li
Keyword(s):  
Low Frequency ◽  
Structure Design ◽  
The Body ◽  
Body Motion ◽  
Mooring Line ◽  
Offshore Structure ◽  
Frequency Oscillation ◽  
Low Frequency Oscillation ◽  
Line System ◽  
Irregular Wave

Mooring line damping plays an important role to the body motion of moored floating platforms. Meanwhile, it can also make contributions to optimize the mooring line system. Accurate assessment of mooring line damping is thus an essential issue for offshore structure design. However, it is difficult to determine the mooring line damping based on theoretical methods. This study considers the parameters which have impact on mooring-induced damping. In the paper, applying Morison formula to calculate the drag and initial force on the mooring line, its dynamic response is computed in the time domain. The energy dissipation of the mooring line due to the viscosity was used to calculate mooring-induced damping. A mooring line is performed with low-frequency oscillation only, the low-frequency oscillation superimposed with regular and irregular wave-frequency motions. In addition, the influences of current velocity, mooring line pretension and different water depths are taken into account.

Effect of Chemical Etching on Adhesively Bonded Aluminum AA6082

2007 ◽  
Vol 344 ◽  
pp. 669-676 ◽  
Author(s):  
C. Borsellino ◽  
G. Di Bella ◽  
V.F. Ruisi
Keyword(s):  
Chemical Etching ◽  
Adhesive Bonding ◽  
Structure Design ◽  
The Body ◽  
Adhesively Bonded ◽  
Intimate Contact ◽  
Aluminum Sheets ◽  
Design And Manufacture ◽  
Aluminum Substrates ◽  
Aluminum Surfaces

The efforts of new automotive industry are mainly directed towards the substitution of aluminum for steel in the body structure because the aluminum structures are lighter than traditional steel ones and meet the requirements, in terms of both vehicle design and manufacture. However, this substitution is not so automatic, but it is important to study the material properties and the structure design, focusing the attention on the methods of joining. Welding, typical technique to joint steel parts, is particularly difficult when applied on aluminum ones and then, in many cases, the adhesive bonding is preferred. To optimise the joint performances it is necessary to pre-treat the metal surface, not only to remove contaminants, but also to provide the intimate contact needed for the adhesive to successfully bond with the adherent surface. The mere cleaning of aluminum surfaces is not suitable for their bonding due to the oxide layer that naturally occurs on exposure to air so we need to apply a more effective treatment (mechanical or chemical etching) to increase the adhesion capability of the substrates. In this work different adhesive joint configurations (single lap) between aluminum substrates are studied. Two different resins are employed to evaluate the influence of the adhesive on the joint performances. Moreover the aluminum sheets are treated with a chemical etching with two different procedures.

ATLAS Barrel Toroid Warm Structure Design and Manufacturing

2006 ◽  
Vol 16 (2) ◽  
pp. 529-532 ◽  
Author(s):  
Z. Sun ◽  
I. Zaitsev ◽  
A. Dudarev ◽  
A. Foussat ◽  
V. Hennion ◽  
...  
Keyword(s):  
Structure Design ◽  
Design And Manufacturing

Study on the Integrated Development System for Carbody of Multiple Unit Based on Digital Prototype Technology

2009 ◽  
Vol 16-19 ◽  
pp. 34-38
Author(s):  
Guang Zhong Hu ◽  
Shou Ne Xiao ◽  
Li Wu ◽  
Shi De Xiao
Keyword(s):  
Integrated Design ◽  
Structure Design ◽  
The Body ◽  
Dimensional Structure ◽  
Design Calculation ◽  
Fatigue Reliability ◽  
Design Strength ◽  
Body Design ◽  
Multiple Unit ◽  
Digital Prototype

With multiple unit running speed, the carbody structure design, strength and fatigue reliability have become an important part of the multiple unit design. From the design requirements of carbody, based on digital prototype technology, the architecture and the development process of carbody integrated design and simulation platform are put forward. Combined with the process of body design, which includes scheme design, three-dimensional structure design, calculation and verification of strength, fatigue reliability analysis and fatigue life prediction, the main module, the key technologies and methods of the body design and dynamic simulation system are discussed. It has important engineering significance for improving the efficiency of the body design and promoting the carbody design.

The Structure Design of Gait Pole Climbing Robot

2015 ◽  
Vol 740 ◽  
pp. 171-174
Author(s):  
Xiao Jin Fu ◽  
Zhao Yang Sun ◽  
Ran Zhao ◽  
Jian Cheng Yin
Keyword(s):  
Slow Motion ◽  
Structure Design ◽  
The Body ◽  
Industrial Robots ◽  
Climbing Robot ◽  
Climbing Robots ◽  
Robot Arms ◽  
Maintenance Work ◽  
Industrial Software

The theory of gait is one of walking ways which is efficient, fast and stable in a variety of industrial robots, offering a structure of climbing robots in a way of gait and climbing with the gait motion in paper. Through the results of analysis by various industrial software, the presented structure of climbing robots which is composed of two terminal parts and two robot arms that is the part of pedestal and climbing mechanism. In the process of climbing, realizing gripping, Swing work, turning work, an orderly motion and get to the aimed place finally through alternate between the upper and lower part of the body by the control of SCM. The presented method has not only improved many problems like complicated climbing structure, controlling rough, slow-motion and unable thronging obstacles, but also accomplished the subsequent operations like tools delivering, pole testing, clearing, maintenance work, furthermore, there has more comprehensive benefits.

Modeling and Performance Simulation for a Picking Manipulator Based on Modelica

2013 ◽  
Vol 579-580 ◽  
pp. 467-475 ◽  
Author(s):  
Hong Jun Wang ◽  
Guo Gang Huang ◽  
Xiang Jun Zou ◽  
Yan Chen
Keyword(s):  
Structure Design ◽  
The Body ◽  
Body Structure ◽  
Performance Simulation ◽  
Model Library ◽  
Drive Motor ◽  
The Laplace Transform ◽  
And Performance ◽  
Component Models ◽  
Module Partition

This paper presents a procedure and the results of structure design about a picking manipulator to be used for autonomous banana harvesting. Based on structure analysis and module partition for the picking manipulator, DriveLib model library was developed employing the virtual simulation and modeling language Modelica. A body structure model for the picking manipulator was established based on component models in DriveLib model library. Motion controls mathematic models for the picking manipulator were analyzed according to drive motor performance for the body structure, and then the partial differential equations were transformed into the ordinary differential equation easily solved by Modelica with the Laplace transform, mechanical motion simulation was realized. The validity models could provide a theoretical basis for picking banana manipulator primary design.

The Dynamic Strength Analysis the Key Parts of Body of RG

2012 ◽  
Vol 503-504 ◽  
pp. 805-808
Author(s):  
Yan Jun Zhao ◽  
Xing Ming Huang ◽  
Shu Guang Li ◽  
Cheng Xu
Keyword(s):  
Optimization Design ◽  
Material Selection ◽  
Research Work ◽  
Dynamic Strength ◽  
Structure Design ◽  
The Body ◽  
Strength Analysis ◽  
Prototype Model ◽  
Maximum Pressure ◽  
Select Material

Structure design and material selection of weapons is the key of the weapon design. The dynamic strength are studied of the weapon’s key parts by finite element simulation in Elastic plastic mechanics. The results show that the body can withstand the maximum pressure, and the simulating results are well coincident with the experiment ones, which confirms the reliability and availability of the virtual prototype model advanced here. Current research work will be helpful in further this kind of designers to select material and the frame optimization design.

Quality Assurance of Laser Welded Axisymmetric Sandwich Structure

2013 ◽  
Vol 549 ◽  
pp. 529-534 ◽  
Author(s):  
Kimmo Illikainen ◽  
Kalle Holappa ◽  
Kari Mäntyjärvi
Keyword(s):  
Quality Assurance ◽  
Working Conditions ◽  
Sandwich Structure ◽  
Visual Inspection ◽  
Experimental Tests ◽  
The Body ◽  
Destructive Testing ◽  
Great Strength ◽  
Static Tests

This study focuses on quality assurance in a laser welded axisymmetric sandwich structure that functions as the body of an electric machine. The manufacturing quality of the structure was measured using destructive testing and visual inspection. The destructive tests included both fatigue and static tests in addition to a macrographic examination. The visual inspection comprised ocular estimates of the laser welded seams as well as their requirements. Compared with the real working conditions of the machine, the experimental tests were exhaustive. Nevertheless, in the tests, the bodies held up very well which shows the great strength of the structure.

Structure design and manufacturing of layered bioceramic scaffolds for load-bearing bone reconstruction

2015 ◽  
Vol 10 (4) ◽  
pp. 045006 ◽  
Author(s):  
Jing-Zhou Yang ◽  
Xiao-Zhi Hu ◽  
Rumana Sultana ◽  
Robert Edward Day ◽  
Paul Ichim
Keyword(s):  
Structure Design ◽  
Bone Reconstruction ◽  
Load Bearing ◽  
Design And Manufacturing
Sign in / Sign up

Export Citation Format

Share Document