scholarly journals Structure Design and Analysis of Canted-Cosine-Theta (CCT) Superconducting Quadrupole Magnet

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Luncai Zhou ◽  
Rongzhen Zhao ◽  
Yuquan Chen ◽  
Liang Yu ◽  
Wei Wu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Stress Analysis ◽  
Electromagnetic Force ◽  
Mechanical Design ◽  
Complex Structure ◽  
Structure Design ◽  
Gradient Field ◽  
Accelerator Facility ◽  
Quadrupole Magnet ◽  
Subcritical System

A superconducting quadrupole magnet based on the Canted-Cosine-Theta (CCT) type coil with a gradient field of 40 T/m and a bore diameter of 60 mm has been designed for the preresearch of two projects of high intensity accelerator facility (HIAF) and accelerator driven subcritical system (ADS). The magnet is comprised of two-layer coils embedded in the formers and the end plates for locating. The coil formers made of aluminum alloy are machined with grooves according to the drive equations of CCT for placing the wires. The existence of ribs between two adjacent wires can avoid accumulation of the electromagnetic force. It is important to take the mechanical design for the complex structure to avoid tensile stresses on the conductor and confine the stresses within a reasonable value. The stress analysis for the quadrupole magnet has been carried out considering the thermal shrinking due to cool down as well as the electromagnetic force on the coil. This paper reports the detailed stress analysis for the CCT quadrupole magnet structure, discusses the calculating results, and gives a reasonable mechanical design.

Structure Design and Analysis for the Spacecraft On-Orbit Replacement Unit (ORU)

2013 ◽  
Vol 437 ◽  
pp. 449-453 ◽  
Author(s):  
Xi Zhai ◽  
Xin Hong Li ◽  
Si Yin Zhou
Keyword(s):  
Complex Structure ◽  
Structure Design ◽  
Module Structure ◽  
Assembly Technology ◽  
Universal Structure ◽  
Module Structures

By using on-orbit replacement and assembly technology, some fresh ideas and methods for the design, produce and application of spacecraft were put forward. Universal structure is one of the most basic requirements of On-Orbit replacement, assembly. Module structure must obey the rules of the Operationally Responsive Space (ORS). According to the degree of spacecraft module division, two module structures were proposed, and the complex structure was analyzed to verify the correctness of it.

Mechanical Design for Accuracy of Linkage Servo Press for Near-Net Shape Forming

2018 ◽  
Author(s):  
Jing Tao ◽  
Huanan Qian ◽  
Suiran Yu
Keyword(s):  
Mechanical Design ◽  
Structure Design ◽  
Tolerance Allocation ◽  
Component Level ◽  
Eccentric Load ◽  
Servo Press ◽  
Near Net Shape ◽  
Net Shape Forming ◽  
Heavy Loads

The accuracy of machine is important to achieving highly accurate shapes. This paper is focused on mechanical design of highly accurate mechanical linkage servo press applicable to (near-)net shape forming. The effects of geometric errors, deformations under heavy loads and ram tilting are analyzed. A top-down design for accuracy approach is proposed: First, accuracy model for identification of inaccuracy-causing factors and their interlinking relations is developed. Then, based on this model, top accuracy index are decomposed and translated into structure design specifications at component level. Both analytic and simulation methods are employed for design for accuracy in aspects of dimensional and geometric tolerance allocation, stiffness synthesis and anti-eccentric load capability. A case study of mechanical design for accuracy of a six-linkage mechanical servo press is also presented to demonstrate and test the proposed design approaches.

A high-sensitivity dual-sample synchronous detection photonic crystal fiber sensor

2021 ◽  
pp. 2150306
Author(s):  
Pibin Bing ◽  
Guifang Wu ◽  
Zhongyang Li ◽  
Sheng Yuan ◽  
Hongtao Zhang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Complex Structure ◽  
High Sensitivity ◽  
Structure Design ◽  
Synchronous Detection ◽  
Crystal Fiber ◽  
The Core ◽  
Wavelength Sensitivity ◽  
Air Hole

The photonic crystal fiber (PCF) sensor based on surface plasmon resonance (SPR) technology has flexibility in birefringence, negative dispersion, effective area and nonlinearity and has become a widely studied new fiber. However, there are many problems in the practical application of the sensor, such as complex structure design, not easy to prepare, the low sensitivity of sensing detection, narrow range of refractive index detection of analytes, which greatly limits the application range and functions of PCF sensors. To solve the above problems, this paper adopts a structure with a longer vertical distance between the D-shaped large air hole channel and the core. The energy of the core conduction mode is better limited by the cladding to transmit in the core, and the plasma mode is enhanced, which can effectively increase the wavelength sensitivity. In this paper, the hexagonal double-clad air hole structure and the D-type structure are combined to ensure a simple structure and facilitate manufacturing and production, while the wavelength sensitivity is also greatly improved. The wavelength sensitivity of the dual sample channel can reach up to 16200 nm/RIU and 15800 nm/RIU, which has broad application prospects in the field of high-sensitivity detection.

Using a cluster approach in the regional agro-industrial complex' structure design

2021 ◽  
Vol 19 (8) ◽  
pp. 1420-1456
Author(s):  
Lyudmila I. PRONYAEVA ◽  
Ol'ga A. FEDOTENKOVA ◽  
Anna V. PAVLOVA
Keyword(s):  
Complex Structure ◽  
Industrial Clusters ◽  
Original Method ◽  
Structure Design ◽  
Comprehensive Approach ◽  
Industrial Complex ◽  
Cluster Approach ◽  
Agricultural Economy ◽  
Foreign Countries ◽  
Organizational Work

Subject. This article studies the processes of clustering of the agro-industrial complex of the Orel Oblast. Objectives. The article aims to develop an improved methodology for identifying regional agro-industrial clusters. Methods. For the study, we used the methods of generalization, localization, formal characterization, and the point-rating and cartographic methods. Results. The article defines modern trends in the clustering of the agricultural economy in foreign countries and Russia, and offers an original method to identify regional agro-industrial clusters. Conclusions. The developed comprehensive approach to the identification of agro-industrial clusters can help systematically arrange organizational work to create them.

The Structure Optimization of Aluminum Alloy Automotive Wheels

2013 ◽  
Vol 753-755 ◽  
pp. 1175-1179
Author(s):  
Bao An Yang ◽  
Xu Hui Li ◽  
Fei Yang ◽  
Zi Ru Niu ◽  
Zhi Hong Wang
Keyword(s):  
Aluminum Alloy ◽  
Fatigue Test ◽  
Optimization Design ◽  
Structure Optimization ◽  
Scientific Basis ◽  
Structure Design ◽  
Bending Fatigue ◽  
Structure Characteristics ◽  
Bending Fatigue Test

The aluminum alloy automotive wheels are widely used and their quality safety is vital. So their structure design should be optimized. Based on the wheel bending fatigue test and the analysis of aluminum alloy automotive wheel's structure characteristics, the wheel's load was discussed and the analysis of the wheel was done by using Solidworks and ANSYS. The analysis result provides scientific basis for the optimization design of the aluminum alloy automotive wheels.

Research the Utilization Rate of Aluminum Alloy Material

2014 ◽  
Vol 595 ◽  
pp. 79-82
Author(s):  
De Ying Sun
Keyword(s):  
Aluminum Alloy ◽  
Complex Structure ◽  
Unit Cost ◽  
High Strength ◽  
Alloy Sheet ◽  
Machining Process ◽  
Utilization Rate ◽  
Material Consumption ◽  
The Individual ◽  
The Cost

There are many parts in aerospace fixing device, the 7075 - t351 brand aluminum alloy is a commonly used material of these parts [2].The material has high strength, good toughness, wear resistance and resistance to spalling corrosion resistance and other characteristics; After the machining deformation, comprehensive mechanical processing performance is good [1]. As a result, the materials are widely used in aerospace equipment. Smaller wall thickness, complex structure, multiple azimuth need processing, is the characteristics of these parts, make the individual parts machining material consumption is larger, increase the cost of the material consumption. In this paper, through the analysis of part structure and machining process, adopt to layout method, in order to improve the utilization rate of aluminum alloy sheet metal, reduce the unit cost.

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