Numerical calculation and stress analysis of crack evolution in coal with a central hole under nonuniform load

With the development of the power grid, the proportion of large capacity unit is increasing rapidly. It requires a more in-depth study on the reliability of the unit, especially for the unit adjusting the peak. This paper concerned on the research of the surface heat transfer coefficient, which is the key factor affect the precision in thermal stress analysis. The surface heat transfer coefficient is obtained via the numerical calculation for the steam’s flow state and the transient heat transfer between rotor. This paper mainly describes the steam’s flow state and the transient heat transfer with the steam seal, and the results show that the direct numerical calculation is resultful in this subject.

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Photoviscoelastic Analysis of Polyurethane : 1st Report, Stress Analysis of the Rectangular Strip with a Central Hole under Constant Load

Transactions of the Japan Society of Mechanical Engineers ◽

10.1299/kikai1938.34.1198 ◽

1968 ◽

Vol 34 (263) ◽

pp. 1198-1202

Author(s):

Takeshi KUNIO ◽

Yasushi MIYANO ◽

Takakazu TAMURA

Keyword(s):

Stress Analysis ◽

Constant Load ◽

Central Hole ◽

Rectangular Strip

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Comparison of Analytical Stress Analysis and Numerical Calculation of Mobile Work Machine Part

MANUFACTURING TECHNOLOGY ◽

10.21062/ujep/76.2018/a/1213-2489/mt/18/2/190 ◽

2018 ◽

Vol 18 (2) ◽

pp. 190-193 ◽

Cited By ~ 7

Author(s):

Mária Blatnická ◽

Miroslav Blatnický ◽

Ján Dižo ◽

Milan Sága

Keyword(s):

Numerical Calculation ◽

Stress Analysis ◽

Machine Part ◽

Mobile Work

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Structure Optimization and Welding Residual Stress Analysis of Twin-Web Turbine Disc

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.622-623.309 ◽

2012 ◽

Vol 622-623 ◽

pp. 309-314 ◽

Cited By ~ 2

Author(s):

Xiu Li Shen ◽

Shao Jing Dong

Keyword(s):

Residual Stress ◽

Weight Loss ◽

Finite Element ◽

Numerical Calculation ◽

Stress Analysis ◽

Welding Process ◽

Structure Optimization ◽

Welding Residual Stress ◽

Turbine Disc ◽

Residual Stress Analysis

This paper has proposed a new shape of the twin-web turbine disc. Based on a design optimization of the shape of the twin-web turbine disc by finite element numerical calculation, we analyzed welding types and carried out the simulation of the welding process and obtained the residual stress. Finally we got a 5.8% weight loss and summarized residual stress of the welding and proved the feasibility of the new shape.

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