Study on Planning Strategy of Harbin Aviation and Automobile Industry City

2011 ◽  
Vol 243-249 ◽  
pp. 1731-1736
Author(s):  
Xin Yue ◽  
Ting Wan
Keyword(s):  
Automobile Industry ◽  
High Speed ◽  
Economic Globalization ◽  
Current Situation ◽  
Aviation Industry ◽  
Land Utilization ◽  
Planning Strategy ◽  
Urban Function ◽  
Ecological Landscape ◽  
Planning And Construction

Under the great background of economic globalization, high-speed development of airplane and automobile industry as well as Harbin Aviation and Automobile Industry City as one of national aviation industry bases, this paper conducts a systemic study on Harbin Aviation and Automobile Industry City. Upon the basis of study on the development background as well as current situation of the industry city, regional overall planning, land utilization, urban function, ecological landscape and culture as well as other planning and development strategies of the industry are mainly discussed in this paper, and, hereby planning prospects are put forward so as to provide certain reference for the planning and construction of industry cities.

A Study on the Deformation due to High Speed Processing of Aircraft Wing Structure

2021 ◽  
Vol 880 ◽  
pp. 63-68
Author(s):  
Jihye An ◽  
Hyunji Kim ◽  
Dohyeon Kim ◽  
Sangkyoo Nam ◽  
Yunyoong Yoo ◽  
...  
Keyword(s):  
Residual Stress ◽  
High Speed ◽  
Tensile Force ◽  
Tensile Load ◽  
Working Hours ◽  
Frictional Heat ◽  
Aviation Industry ◽  
High Speed Machining ◽  
Skilled Workers ◽  
Processing Site

Residual stresses generated during high-speed machining of spoiler beams used in aircraft cause product deformation and dimensional mismatch, which increases the defect rate and leads to material waste. To overcome this problem, the processing site uses manual modification techniques that stretch part of the workpiece according to the experience of skilled workers. However, due to the nature of the aviation parts industry, there are no established methods for modification of product shapes and parts. Studying the modification process would allow for increased productivity, such as shorter working hours, throughout the aviation industry. In this study, a method of predicting residual stress due to frictional heat generated during high-speed machining and applying a tensile force to a model deformed by residual stress was used to modify the product. Our analysis showed that a degree of deformation similar to the measured value was produced, and that the product was modified by applying a tensile load.

Sign Markup Language in a Multimodal Context

2018 ◽  
Vol 14 (1) ◽  
pp. 1-11
Author(s):  
Linda Jianlin Chen ◽  
Jianbin Huang
Keyword(s):  
High Speed ◽  
Economic Globalization ◽  
Cross Cultural ◽  
Knowledge Systems ◽  
Cognitive Domain ◽  
Cultural Communication ◽  
Markup Language ◽  
Cross Cultural Communication ◽  
Multimodal Discourse ◽  
Cognitive Research

Abstract The process of “telling through words” and “understanding by insight” of a language are closely related to high-context and low-context cultures. Various concepts and knowledge systems constitute a hierarchy of cognitive domain networks. Bilingual and multilingual sign markup language can be seen everywhere in a multicultural setting, which is full of cognition, construal, and variation in the process of cross-cultural communication under the multilingual context. Sign markup language is presented in a multimodal discourse form, such as business language, advertising language, commercial logos, slogans, or propagation language. It contains known and unknown information and foreground and background cultures, changing with technological knowledge and history development. The cross-cultural cognitive research of sign markup language in a multimodal context is increasingly important, especially in today’s society undergoing the development of economic globalization, high-speed information, urban internationalization, and data digitization. Based on instances of sign markup language, the present paper will apply the theory of memes in sign markup language to analyze and put forward the cognitive mechanism used in multimodal contexts.

Image Morphology-Based Path Generation for High-Speed Pocketing

2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Bingfei Xiang ◽  
Yingguang Li ◽  
Ke Xu ◽  
Mengyuan Yang
Keyword(s):  
High Speed ◽  
Geometric Constraints ◽  
Aviation Industry ◽  
Path Generation ◽  
Pocket Milling ◽  
Parallel Path ◽  
Mirror Milling ◽  
Local Modification ◽  
Initial Path ◽  
Image Morphology

Abstract Pocket milling has long been a popular means for machining pocket features in structural parts and skins in the aviation industry. Recent advanced milling technologies pose new challenges for pocket milling path which existing contour-parallel path generation schemes cannot overcome. For high-speed machining, pocket milling path is desired to be smooth and with no tool retractions during the process, while the path stepover should be kept within a prescribed range to achieve relatively constant cutting load. These geometric constraints are also vital in the application of aircraft skin mirror milling in order to guarantee a correct and consistent thickness signal reception for real-time adjustment of the process. Traditional path optimization based on local modification can only meet a few of these constraints while others are being violated. Therefore, we propose a novel contour-parallel path generation scheme that respects all these process constraints by utilizing the idea of image morphology. The two-step scheme first generates an initial path by propagating from the rectified medial curve of the pocket shape. The initial path is then treated as a binary image being iteratively deformed and projected back into the pocket region via quadratic optimization. Experimental results show that our developed scheme can generate a smooth, tool retraction free and stepover-guaranteed path for various shapes of pocket.

scholarly journals A Path-Planning Strategy for Unmanned Surface Vehicles Based on an Adaptive Hybrid Dynamic Stepsize and Target Attractive Force-RRT Algorithm

2019 ◽  
Vol 7 (5) ◽  
pp. 132 ◽  
Author(s):  
Zhen Zhang ◽  
Defeng Wu ◽  
Jiadong Gu ◽  
Fusheng Li
Keyword(s):  
Path Planning ◽  
High Speed ◽  
Attractive Force ◽  
Simulation Experiments ◽  
Planning Strategy ◽  
Unmanned Surface Vehicles ◽  
Planning Algorithm ◽  
Pass Through ◽  
Path Planning Algorithm ◽  
Narrow Area

It is well known that path planning has always been an important study area for intelligent ships, especially for unmanned surface vehicles (USVs). Therefore, it is necessary to study the path-planning algorithm for USVs. As one of the basic algorithms for USV path planning, the rapidly-exploring random tree (RRT) is popular due to its simple structure, high speed and ease of modification. However, it also has some obvious drawbacks and problems. Designed to perfect defects of the basic RRT and improve the performance of USVs, an enhanced algorithm of path planning is proposed in this study, called the adaptive hybrid dynamic stepsize and target attractive force-RRT(AHDSTAF-RRT). The ability to pass through a narrow area and the forward speed in open areas of USVs are improved by adopting the AHDSTAF-RRT in comparison to the basic RRT algorithm. The improved algorithm is also applied to an actual gulf map for simulation experiments, and the experimental data is collected and organized. Simulation experiments show that the proposed AHDSTAF-RRT in this paper outperforms several existing RRT algorithms, both in terms of path length and calculating speed.

Analysis and Optimization of Hangzhou East Area Traffic Based on the Congestion Index Detection Platform

2014 ◽  
Vol 1030-1032 ◽  
pp. 2182-2186
Author(s):  
Ling Yan Ge ◽  
Bi Feng Zhu
Keyword(s):  
Automobile Industry ◽  
Traffic Congestion ◽  
High Speed ◽  
Road Traffic ◽  
Rapid Development ◽  
Traffic Demand ◽  
The Road ◽  
Fast Pace ◽  
Urbanization In China ◽  
Congestion Index

With the rapid development of urbanization in China and the motorization’s fast pace of high speed as well as the national automobile industry process, many cities in our country have been facing a huge problem - traffic congestion in recent years. And the essence of the problem is the imbalance between road traffic supply and traffic demand in the process of urban development. Aimed at the problem of traffic congestion, this paper based on Hangzhou city’s traffic congestion index of monitoring data from testing platform and statistical data from field survey , studied the Hangzhou east area of road traffic running situation, analyzed the causes of the east area of Hangzhou road congestion, and thus to adjust and optimize the road traffic system of the area, put forward reasonable system solutions and proposals to improve the management level

South-east Asian aviation faces growing pains

2019 ◽  
Keyword(s):  
High Speed ◽  
Aviation Industry ◽  
South East Asia ◽  
Kuala Lumpur ◽  
High Speed Railway ◽  
Content Type ◽  
Passenger Traffic ◽  
Development Costs ◽  
Growing Pains ◽  
The World

Subject Challenges facing South-east Asia's aviation industry. Significance South-east Asia is experiencing one of the sharpest increases in air passenger traffic anywhere in the world. Besides intensifying competition between airlines, this is prompting disputes over airspace and straining capacity at many of the region’s airports. Impacts Indonesia’s establishment of air defence identification zones could intensify territorial and airspace disputes in the South China Sea. The deferral of the Kuala Lumpur-Singapore high-speed railway will mean little change to air traffic levels between the two places. Changes to funding for Malaysian airport operators could result in higher fees being passed on to passengers to cover development costs.

Tensile Properties of Sewing Thread and Sewing Needle Temperature at Different Speed of Sewing Machine

2012 ◽  
Vol 627 ◽  
pp. 456-460 ◽  
Author(s):  
Adnan Mazari ◽  
Antonin Havelka
Keyword(s):  
Tensile Properties ◽  
Automobile Industry ◽  
High Speed ◽  
Apparel Industry ◽  
Sewing Machine ◽  
Sewing Needle ◽  
Sewing Thread ◽  
Synthetic Materials ◽  
Exact Temperature ◽  
Lockstitch Sewing

Needle heatup is a big issue for apparel industry especially for automobile industry seat covers where a lot of synthetic materials are used which get damaged by needle heat at high speed of sewing machine,in this article thermocamera and thermocouple are used to measure the precise temperature of needle eye and then 100% polyester 35x3 Tex thread is taken for sewing,the lockstitch sewing machine is run at 1000rpm,2000rpm and 3000rpm respectively and the both methods are used to obtain the accurate needle temperature and finally thread tensile properties are measured before the sewing and taking out the thread from the seam precisely to get the tensile properties of thread after 10,30 and 60 seconds of continuous stitching,the article is very helpful in predicting the exact temperature of needle in lock stitch machine and getting the damage to thread by the needle heat at different speeds and different stages of sewing process.

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