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Online since: June 2012
Authors: Chun Ying Zhou
Plane182 unit has Many unit technology that overcome shear locking and volumetric locking, such as the enhanced strain formula, the choose cut integration ,the unanimous reduction integration and the mixed U-P etc, powerful, has a lot of advantages.
3.1.2 The choice of unit formula
The traditional unit formula is called the complete integral, at the bending problem, the complete integral low order unit occurs shear locking for” too hard"; when the Poisson's ratio approaches to 0.5, volumetric locking happens by numerical integral difficulty, so the traditional unit formula due to the shear locking and volumetric locking is rarely used.
The unanimous reduction integration, uses the low first-order integral formula that the accurate numerical integration required, Volume and deviation use cut integration, can help to eliminate the volumetric locking and shear locking problem.
In the choice of unit, to ensure that the selected unit support the plastic of the concern, If it is the dominant issues in bent model, adopt appropriate unit formula to ensure that shear locking is not a problem, for big strain, should use unanimous reduction integral (URI) unit.
Here to choose unanimous reduction integration unit formula. 3.2 The treatment of Contact and friction In the finite element method, first of all, finite element discrete for the possible contact boundary, namely, establish a layer of virtual contact unit between these boundaries, after finding the contact point, calculate contact force according to the object motion law, the constraint method of the contact force calculation is penalty function method and Lagrange multiplier method.
The exact shape of the formation spline can be gained by the extraction, analysis and calculations of the result datas according to calculate for the model.
The unanimous reduction integration, uses the low first-order integral formula that the accurate numerical integration required, Volume and deviation use cut integration, can help to eliminate the volumetric locking and shear locking problem.
In the choice of unit, to ensure that the selected unit support the plastic of the concern, If it is the dominant issues in bent model, adopt appropriate unit formula to ensure that shear locking is not a problem, for big strain, should use unanimous reduction integral (URI) unit.
Here to choose unanimous reduction integration unit formula. 3.2 The treatment of Contact and friction In the finite element method, first of all, finite element discrete for the possible contact boundary, namely, establish a layer of virtual contact unit between these boundaries, after finding the contact point, calculate contact force according to the object motion law, the constraint method of the contact force calculation is penalty function method and Lagrange multiplier method.
The exact shape of the formation spline can be gained by the extraction, analysis and calculations of the result datas according to calculate for the model.
Online since: November 2013
Authors: Norbert Vennemann, Claudia Kummerlöwe, Achim Siebert
Induction and cure times obtained from rheometer curves exhibited a considerable decrease with increasing filler loading and kinetic investigations using a first order model indicated a distinct reduction of the activation energy.
The activation energies were evaluated from the rheometer data using a 1st order kinetic model.
The evaluation of DSC data was done according to the approach of Ozawa [7].
The activation energies were evaluated from the rheometer data using a 1st order kinetic model.
The evaluation of DSC data was done according to the approach of Ozawa [7].
Online since: May 2012
Authors: Yu Long Zhang, Lin Fei Zhou, Qian Cheng
The results showed that the main pressure of the wetland is from agricultural production and urban expansion since 1988, which resulted in large-scale land reclamation, expansion of rice planting area and reduction of tidal flat areas.
Data processing With reference to the national standard classification system of land resources and Convention of Wetlands, on the basis of TM images of 1988, 2009 and specific characteristics of the wetland, the article extracted the wetland’s basic land classification information using visual interpretation method, then analyzed and evaluated the wetland’s ecological environmental variations in Table 1.
Sensitivity of landscape pattern indices to input data characteristics on real landscapes: implications for their use in natural disturbance emulation .Landscape Ecology, 19: 255-271.
Data processing With reference to the national standard classification system of land resources and Convention of Wetlands, on the basis of TM images of 1988, 2009 and specific characteristics of the wetland, the article extracted the wetland’s basic land classification information using visual interpretation method, then analyzed and evaluated the wetland’s ecological environmental variations in Table 1.
Sensitivity of landscape pattern indices to input data characteristics on real landscapes: implications for their use in natural disturbance emulation .Landscape Ecology, 19: 255-271.
Online since: July 2020
Authors: Nikolay Legkiy
The article covers a solution of a modern electronics problem: improvement of data transmission device speed using the example of fiber-optic communication lines (FOCL).
The data processing rate and throughput of transmission channels are determined by capabilities of the optoelectronics and, first of all, by the performance of its hardware components.
The data processing rate and throughput of transmission channels are determined by capabilities of the physical transmission lines, first of all the fiber optic lines, and by performance of the hardware components of the electronics and optoelectronics.
There are three ways to increase the throughput and data transfer speed.
The possibility to influence the electronic properties of graphene is evidenced by the experimental data showing changes in the Raman shift depending on the isotopic composition of graphene (Fig. 2).
The data processing rate and throughput of transmission channels are determined by capabilities of the optoelectronics and, first of all, by the performance of its hardware components.
The data processing rate and throughput of transmission channels are determined by capabilities of the physical transmission lines, first of all the fiber optic lines, and by performance of the hardware components of the electronics and optoelectronics.
There are three ways to increase the throughput and data transfer speed.
The possibility to influence the electronic properties of graphene is evidenced by the experimental data showing changes in the Raman shift depending on the isotopic composition of graphene (Fig. 2).
Online since: July 2011
Authors: Jian Guang Li
Introduction
Based on the “Twelfth five” emission reduction targets and the current building energy efficiency quality problems, Building Energy Research Group of Zhengzhou University developed a small frame exterior composite insulation system (referred to as “XKT”), and acquired the National patent(No.
Model 2: W1-XKTP facing layer with shear key, with specific data same as model1.
After adding the shear key to the mortar layer, the stress peak of σx and σy in the region of stress concentration shows a reduction by 46.01% and 49.61% respectively. 4.
Model 2: W1-XKTP facing layer with shear key, with specific data same as model1.
After adding the shear key to the mortar layer, the stress peak of σx and σy in the region of stress concentration shows a reduction by 46.01% and 49.61% respectively. 4.
Online since: November 2010
Authors: Xin Yin, Yuan Peng Liu
Nickel Base Heat-resisting Alloy Supersonic Signal Noise Reduction Processing
This experiment uses the American UltraPAC system to carry on the extraction of supersonic signal.
Fig. 2 Around noise reduction supersonic signal Uses in the Nickel Base Heat-resisting Alloy Supersonic Signal Identification WNN This experiment uses the American UltraPAC system to carry on the extraction of supersonic signal.
Fig. 4 Defect signal and extracted 8 characters Table 1 Supersonic signal training sample Sample type Training sample data E3,0 E3,1 E3,2 E3,3 E3,4 E3,5 E3,6 E3,7 1 Non-defect 0.8274 0.1081 0.2383 0.0663 0.1306 0.0845 0.2820 0.3726 2 Defect signal 0.5734 0.1049 0.4353 0.2060 0.3133 0.4119 0.2734 0.2929 3 Non-defect 0.7812 0.1212 0.3948 0.1007 0.2190 0.2827 0.1633 0.2332 …… 16 Defect signal 0.3098 0.0792 0.2010 0.2131 0.3817 0.4605 0.5923 0.3214 17 Defect signal 0.1927 0.1705 0.4293 0.4595 0.2730 0.2046 0.4492 0.4673 18 Defect signal 0.4695 0.1166 0.2698 0.1961 0.3169 0.1211 0.5163 0.5226 Simulation Result.
Fig. 2 Around noise reduction supersonic signal Uses in the Nickel Base Heat-resisting Alloy Supersonic Signal Identification WNN This experiment uses the American UltraPAC system to carry on the extraction of supersonic signal.
Fig. 4 Defect signal and extracted 8 characters Table 1 Supersonic signal training sample Sample type Training sample data E3,0 E3,1 E3,2 E3,3 E3,4 E3,5 E3,6 E3,7 1 Non-defect 0.8274 0.1081 0.2383 0.0663 0.1306 0.0845 0.2820 0.3726 2 Defect signal 0.5734 0.1049 0.4353 0.2060 0.3133 0.4119 0.2734 0.2929 3 Non-defect 0.7812 0.1212 0.3948 0.1007 0.2190 0.2827 0.1633 0.2332 …… 16 Defect signal 0.3098 0.0792 0.2010 0.2131 0.3817 0.4605 0.5923 0.3214 17 Defect signal 0.1927 0.1705 0.4293 0.4595 0.2730 0.2046 0.4492 0.4673 18 Defect signal 0.4695 0.1166 0.2698 0.1961 0.3169 0.1211 0.5163 0.5226 Simulation Result.
Online since: February 2014
Authors: Ming Wang, Zhou Yang Bi, Jian Hui Chen, Wen Jie Ju, Ji Chen Li
(2) Prediction: According to the highly relevant of even subsets and an odd number, the odd number sequence can be predicted by the division of the even number sequence, which is based on the original data.
Simulation and experimental results show that comparing with the traditional generation wavelet noise reduction method the lifting wavelet improved threshold function method can obtain higher SNR and smaller MSE, and has a good real-time performance.
Adaptive Noise Reduction for Chaotic Signals Based on Dual-Lifting Wavelet Transform [J].
Simulation and experimental results show that comparing with the traditional generation wavelet noise reduction method the lifting wavelet improved threshold function method can obtain higher SNR and smaller MSE, and has a good real-time performance.
Adaptive Noise Reduction for Chaotic Signals Based on Dual-Lifting Wavelet Transform [J].
Online since: January 2013
Authors: Jong Rong Wang, Chun Kuan Shih, Chiung Wen Tsai
The delayed neutron data for thermal fission in U-235 are referred to the reference [8].
Fig. 4(a) also represents the decrease of fuel temperature because of the reduction of neutron flux (fission power).
Compared with the results by the step decrease of inlet flow rate, those by the step decrease of inlet coolant temperature lead to the increase of neutron flux (Fig. 5(a)) as a result of positive reactivity caused by the reduction of coolant temperature (Fig. 5(a)).
Fig. 4(a) also represents the decrease of fuel temperature because of the reduction of neutron flux (fission power).
Compared with the results by the step decrease of inlet flow rate, those by the step decrease of inlet coolant temperature lead to the increase of neutron flux (Fig. 5(a)) as a result of positive reactivity caused by the reduction of coolant temperature (Fig. 5(a)).
Online since: November 2014
Authors: Wan Khairuddin bin Wan Ali, Nor Erma Shuhadah binti Abdul Razak, Hussin bin Mohd Nor
The average number of chain scission, S, based on Mn values obtained by GPC
Time (hour)
Mn
S
0
132689
0
1
72391
0.83
3
65867
1.01
5
60096
1.21
20
34049
2.90
Meanwhile, increasing the amount of cobalt from 1% to 5% at constant reaction time caused in reduction of Mn and Mw as shown in Figure 2.
However higher reduction in molecular weight was observed by varying the cobalt amount rather than varying the reaction time.
However different data range of burning rate explained appropriateness to be used in different application.
However higher reduction in molecular weight was observed by varying the cobalt amount rather than varying the reaction time.
However different data range of burning rate explained appropriateness to be used in different application.