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Online since: July 2014
Authors: Jun Ping Liu, Fei Long Dong, Jia Wei Shao
It provides data and mature management mode for seawall management.
Then the data is processed simply by using the function of the software to realize the visualization of distribution about seawall engineering and data system.
database of system and seawall data input database established data processing data analysis draw a conclusion safety warning Fig.2 A simple flowchart of ArcGIS application Data input.
In ArcGIS, each spatial data has its corresponding attribute table.
To quickly acquire these data, the data can be displayed directly on the diagram.
Then the data is processed simply by using the function of the software to realize the visualization of distribution about seawall engineering and data system.
database of system and seawall data input database established data processing data analysis draw a conclusion safety warning Fig.2 A simple flowchart of ArcGIS application Data input.
In ArcGIS, each spatial data has its corresponding attribute table.
To quickly acquire these data, the data can be displayed directly on the diagram.
Online since: October 2010
Authors: Fu Zhen Xuan, Jin Quan Guo, Li Xin Wang
The major disadvantage of these creep equations used in
these calculations is that they require creep rupture strain data of the materials.
The creep test data is illustrated in Fig 2.
The material constants P, Q, n, et al used in creep-relaxation conversion model were derived from creep testing data.
The predicted results are compared with the data of stress relaxation tests conducted on bolting steel 1Cr10NiMoW2VNbN.
Wada: Collection and Uses for Relaxation Data in Design ( ASME, USA 1989), pp.15-19
The creep test data is illustrated in Fig 2.
The material constants P, Q, n, et al used in creep-relaxation conversion model were derived from creep testing data.
The predicted results are compared with the data of stress relaxation tests conducted on bolting steel 1Cr10NiMoW2VNbN.
Wada: Collection and Uses for Relaxation Data in Design ( ASME, USA 1989), pp.15-19
Online since: August 2014
Authors: José Eduardo Mautone Barros, Ramon Molina Valle, Fabrício Torres Borghi
The range of validity of the method is studied comparing results to experimental data.
The results will compare numerical to experimental data.
The total simulation time for spectral data comparisons is 0.5 seconds.
The post-processing for the experimental measurements data was performed with equivalent signal processing used for the computational simulation.
Results The comparison between the experimentally measured data and the CAA prediction is showed for a probe point by Figure 1.
The results will compare numerical to experimental data.
The total simulation time for spectral data comparisons is 0.5 seconds.
The post-processing for the experimental measurements data was performed with equivalent signal processing used for the computational simulation.
Results The comparison between the experimentally measured data and the CAA prediction is showed for a probe point by Figure 1.
Online since: May 2014
Authors: Rolf Kall, Christoph Landmann
Graphical Hardware Description as a High-Level Design Entry Method
for FPGA-based Data Acquisition Systems
Christoph Landmann, M.Sc.1,a, Dr.
Process No. 1 reads updates from the FP through the terminals with every iteration and performs the operation according to the data flow.
During the execution, the Enable line is asserted first and the FF is enabled for synchronization (Data In Register).
The lower path represents the Enable chain and is used to determine, how many cycles are required to transfer the data through the network.
Both types implement a VHDL design in parallel to a LabVIEW FPGA VI that can run in different clock domains and share data.
Process No. 1 reads updates from the FP through the terminals with every iteration and performs the operation according to the data flow.
During the execution, the Enable line is asserted first and the FF is enabled for synchronization (Data In Register).
The lower path represents the Enable chain and is used to determine, how many cycles are required to transfer the data through the network.
Both types implement a VHDL design in parallel to a LabVIEW FPGA VI that can run in different clock domains and share data.
Online since: June 2015
Authors: David T. Clark, Ewan P. Ramsay, A.E. Murphy, Dave A. Smith, Robin. F. Thompson, R.A.R. Young, A.B. Horsfall, B.J.D. Furnival, Craig Ryan, Ming Hung Weng
DIT was extracted from the high frequency capacitance data by means of the Terman method [11].
The data in Fig. 4 shows DIT as a function of the energy position in the bandgap, Ec-Et.
The ConV data shown in Fig. 6 uses a constant voltage and allows projection of dielectric lifetime.
The data in Fig. 7 show the effect of a hold stress on the capacitance voltage characteristics.
The data in Fig. 8 shows Fowler Nordheim analysis of the high-field regions of J-E plots.
The data in Fig. 4 shows DIT as a function of the energy position in the bandgap, Ec-Et.
The ConV data shown in Fig. 6 uses a constant voltage and allows projection of dielectric lifetime.
The data in Fig. 7 show the effect of a hold stress on the capacitance voltage characteristics.
The data in Fig. 8 shows Fowler Nordheim analysis of the high-field regions of J-E plots.
Online since: September 2007
Authors: H. Van der Auweraer, Stoyan Kanev, B. Peeters, Michel Verhaegen
Fig. 3 shows the PolyMAX stabilization diagram for the reference data set S0.
The available data for each damage scenario are split in two equal parts.
The variances in Eq. 1 are estimated empirically using the available data.
Online (thus, using validation data), at each sample, the current VAFs are computed.
In this case, 2 s of data were used to identify a new model.
The available data for each damage scenario are split in two equal parts.
The variances in Eq. 1 are estimated empirically using the available data.
Online (thus, using validation data), at each sample, the current VAFs are computed.
In this case, 2 s of data were used to identify a new model.
Online since: April 2016
Authors: Tereza Pavlů, Magdaléna Šefflová, Vladimír Kočí
The research groups around the world deal with possibilities of reduction of cement in concrete.
These applications especially cement replacement could lead to CO2 emissions reduction [6].
The inventory data of recycling were calculated according to collected data from Czech recycling plants.
The data of the other processes were taken from Ecoinvent database [11].
The reductions of CO2 emissions were 12%, maximally.
These applications especially cement replacement could lead to CO2 emissions reduction [6].
The inventory data of recycling were calculated according to collected data from Czech recycling plants.
The data of the other processes were taken from Ecoinvent database [11].
The reductions of CO2 emissions were 12%, maximally.
Online since: February 2011
Authors: Jian Feng Chen
In order to study the load-bearing properties of butt-welded connection of steel structure post fire, the strength design value of weld connection post-fire is proposed based on the experimental data and theoretical analysis.
Strength degradation regularity of the weld connection post fire is tested by the author and reduction coefficient for tensile strength of butt-welded connection is given in the reference [3,4].
When the reduction coefficient is used to check the strength of the weld connection post fire, the strength design value of weld connection and calculation method for strength of weld after high temperature are needed to be studied further more.
(10) Where, N ——The axial tensile or compressive force; lw ——Length of the weld; t ——The smaller thickness of connectors in butt-welded joint; The thickness of web in T-shaped joint; ——Reduction coefficient for tensile strength of butt-welded joint after high temperature cooling; ,——Design value of tensile, compressive strength of butt-welded connection before fire.
Strength degradation regularity of the weld connection post fire is tested by the author and reduction coefficient for tensile strength of butt-welded connection is given in the reference [3,4].
When the reduction coefficient is used to check the strength of the weld connection post fire, the strength design value of weld connection and calculation method for strength of weld after high temperature are needed to be studied further more.
(10) Where, N ——The axial tensile or compressive force; lw ——Length of the weld; t ——The smaller thickness of connectors in butt-welded joint; The thickness of web in T-shaped joint; ——Reduction coefficient for tensile strength of butt-welded joint after high temperature cooling; ,——Design value of tensile, compressive strength of butt-welded connection before fire.
Online since: September 2014
Authors: Shi Gang Wang, Feng Juan Wang, Bo Yu Zhao
The simulation data and conclusion supply the basis for the actual processing.
The core head Ball Drawing Connecting rod Winding core heard Steel ring turning Core head turning Sizing die Steel ring The outer membrane Fig. 1 The principle of ball spinning forming Before forming the pipe blank, for the annealed light tube, first of all, through the floating mandrel diameter reduction of drawing, but traveling core head due to the axial force and different from the usual thinning, reducing floating mandrel drawing, the drawing force requirements as small as possible.
Ball feed 3 mm/r, reduction of 0.16 mm.
Table 3 Simulation parameters Spinning speed (r/min) Ball diameter (mm) Drawing speed (m/min) The number of ball Load (mm/r) Reduction (mm) 8000, 12000 18000, 24000 8 80 6 3 0.16 Fig. 3 Equivalent stress and strain (8000 r/min) Fig. 4 Equivalent stress and strain (12000 r/min) Fig. 5 Equivalent stress and strain (18000 r/min) Fig. 6 Equivalent stress and strain (24000 r/min) Through Fig. 3 to Fig.6 different spinning speed to form the inner straight groove tube stress, strain distribution were analyzed, effects of different spinning speed can be obtained in the straight groove tube high-speed ball spinning.
The core head Ball Drawing Connecting rod Winding core heard Steel ring turning Core head turning Sizing die Steel ring The outer membrane Fig. 1 The principle of ball spinning forming Before forming the pipe blank, for the annealed light tube, first of all, through the floating mandrel diameter reduction of drawing, but traveling core head due to the axial force and different from the usual thinning, reducing floating mandrel drawing, the drawing force requirements as small as possible.
Ball feed 3 mm/r, reduction of 0.16 mm.
Table 3 Simulation parameters Spinning speed (r/min) Ball diameter (mm) Drawing speed (m/min) The number of ball Load (mm/r) Reduction (mm) 8000, 12000 18000, 24000 8 80 6 3 0.16 Fig. 3 Equivalent stress and strain (8000 r/min) Fig. 4 Equivalent stress and strain (12000 r/min) Fig. 5 Equivalent stress and strain (18000 r/min) Fig. 6 Equivalent stress and strain (24000 r/min) Through Fig. 3 to Fig.6 different spinning speed to form the inner straight groove tube stress, strain distribution were analyzed, effects of different spinning speed can be obtained in the straight groove tube high-speed ball spinning.
Online since: January 2013
Authors: Zhao Lv
Second, in the stage of moderate earthquake, the data is calculated by adjusting the corresponding parameter values.
The structural computation model shown in Figure 1. 1.2 Calculation Parameters floors 5 Wind load the basic wind pressure In 50 years Earthquake Unidirectiona earthquake and accidental eccentricity (± 5%) Earthquake computing CQC, Elastic time-history analysis, Static elastoplastic analysis Earthquake direction x .y.z Live Load Reduction According to the standard Weight adjustment 1 Floor assumption Rigid floor Cycle reduction 0.9 Damping ratio 0.04 Stiffness enlarge 2 1.3 The Analysis of main calculation results The calculation results show that in the calculation of the 50 formation were not mainly to reverse the cycle of vibration, which can be judged the original main concrete structure due to increase steel reasons, the overall structure has enough torsional rigidity.
Specific parameter adjustment: the largest earthquake influence coefficient а take 0.46 earthquake amplification factor of 1; cycle take 1 reduction factor; the seismic level defined as the four; adopt the role of partial factor, material partial safety factor and the seismic capacity adjustment factor The strength of the material used the design value.The definition of other design parameters are the same as in the design of small earthquakes. 2.2The Analysis of main calculation results In earthquakes, structure in the X direction, the first floor shear 95451KN, is about a small earthquake of 2.3 times,In the Y direction first floor shear 76323KN, and is a small earthquake of 2.1 times.
The structural computation model shown in Figure 1. 1.2 Calculation Parameters floors 5 Wind load the basic wind pressure In 50 years Earthquake Unidirectiona earthquake and accidental eccentricity (± 5%) Earthquake computing CQC, Elastic time-history analysis, Static elastoplastic analysis Earthquake direction x .y.z Live Load Reduction According to the standard Weight adjustment 1 Floor assumption Rigid floor Cycle reduction 0.9 Damping ratio 0.04 Stiffness enlarge 2 1.3 The Analysis of main calculation results The calculation results show that in the calculation of the 50 formation were not mainly to reverse the cycle of vibration, which can be judged the original main concrete structure due to increase steel reasons, the overall structure has enough torsional rigidity.
Specific parameter adjustment: the largest earthquake influence coefficient а take 0.46 earthquake amplification factor of 1; cycle take 1 reduction factor; the seismic level defined as the four; adopt the role of partial factor, material partial safety factor and the seismic capacity adjustment factor The strength of the material used the design value.The definition of other design parameters are the same as in the design of small earthquakes. 2.2The Analysis of main calculation results In earthquakes, structure in the X direction, the first floor shear 95451KN, is about a small earthquake of 2.3 times,In the Y direction first floor shear 76323KN, and is a small earthquake of 2.1 times.