Simplified calculation method of threshold value for the non-unit transient-voltage based protection in multi-terminal VSC-HVDC grid

2022 ◽  
Vol 134 ◽  
pp. 107435
Author(s):  
Jiawei He ◽  
Bin Li ◽  
Ye Li ◽  
Wenbo Wang ◽  
Huijie Lyu ◽  
...  
Keyword(s):  
Calculation Method ◽  
Threshold Value ◽  
Transient Voltage ◽  
Simplified Calculation ◽  
Simplified Calculation Method

Research on Confidence Degree of Enterprise Alliance under the Environment of Network-Based Manufacturing

2012 ◽  
Vol 605-607 ◽  
pp. 516-520
Author(s):  
Xian Zhang
Keyword(s):  
Calculation Method ◽  
New Products ◽  
Partner Selection ◽  
Confidence Degree ◽  
Set Up ◽  
Simplified Calculation ◽  
Simplified Calculation Method

Under the environment of the network-based manufacturing, Ihe goal of the formation of enterprise alliance is to expeditiously complete the development of new products to gain the market. In order to meet the chance for enterprises alliance to complete the goal largest, this paper provided the concept of confidence degree and its corresponding calculation method. After studying the confidence degree of the total enterprise alliance, the simplified calculation method is set up for the big alliance. This calculation mathod can embody the essence of the partner selection better, and provide a rational strategy for establishing the enterprise alliance.

A Study on the Simplified Calculation Method for the Residual Ultimate Strength of Damaged Hull Structures

2016 ◽  
Author(s):  
Kimihiro Toh ◽  
Shunsuke Maeda ◽  
Takao Yoshikawa
Keyword(s):  
Ultimate Strength ◽  
Calculation Method ◽  
Fe Analysis ◽  
Structural Members ◽  
Average Strain ◽  
Non Linear ◽  
Compressive Loads ◽  
Calculation Results ◽  
Simplified Calculation ◽  
Simplified Calculation Method

In order to obtain the non-linear average stress-average strain relationships (σ-ε curves) of damaged structural members under both tensile and compressive loads, the systematical calculations are performed using the non-linear FE analysis (FEA) code, LS-DYNA, and the idealized σ-ε curves of damaged structural members are estimated from FEA results. In addition, by introducing the idealized σ-ε curves of damaged structural members to the simplified calculation program, which is developed by authors and based on the Smith’s method, the residual ultimate strength of damaged hull structures is calculated. The residual ultimate strength of damaged hull structures is also calculated utilizing FEA, the calculation results by the simplified calculation program are compared with the results obtained from FE analyses so as to examine the accuracy of simplified calculation method.

Practical Calculation Method for the Bearing Capacity at High Temperature of Concrete Filled Steel Tubular Columns Subjected to Fire

2014 ◽  
Vol 1065-1069 ◽  
pp. 1358-1362
Author(s):  
Jin Sheng Han ◽  
Hao Ran Liu ◽  
Shu Ping Cong
Keyword(s):  
High Temperature ◽  
Bearing Capacity ◽  
Fire Resistance ◽  
Calculation Method ◽  
Engineering Application ◽  
Practical Calculation ◽  
Tubular Columns ◽  
Calculation Results ◽  
Simplified Calculation ◽  
Simplified Calculation Method

The fire resistance of concrete filled steel tubular column is usually obtained by the numerical analysis method, which is difficult to operate and not convenient in the actual civil engineering. So it is necessary to study the simplified calculation method. A large number of numerical simulation results of the temperature distribution of the section and the bearing capacity at high temperature of the concrete filled steel tubular columns are analyzed. The influences of secondary parameters are simplified. The simplified calculation method at 150 min and 180 min for the bearing capacity at high temperature of concrete filled steel tubular columns subjected to axial compression and fire is presented on the basis of comprehensive analysis of the numerical calculation results. The calculation results can be used as the basis to judge the fire resistance. It is shown by the comparison with the experimental results that the precision of the simplified calculation method can meet the requirements of engineering application.

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