Thermal Stress Performance Analysis for a New External Wall Insulation System

2011 ◽  
Vol 71-78 ◽  
pp. 1929-1932
Author(s):  
Jian Guang Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
The Other ◽  
Stress And Strain ◽  
Insulation System ◽  
Shear Key ◽  
Small Frame ◽  
Extreme High Temperature ◽  
System Temperature

In this paper, two models are taken as subjects, one being a small frame exterior composite insulation system with the shear key, the other being the system without the shear key. In extreme high temperature conditions in summer, the small frame exterior composite insulation system temperature stress and strain are analyzed with numerical simulation using finite element method. Results show that shear key can effectively reduce the stress concentration, weaken the stress peak by nearly 50% and reduce the deformation by nearly 50% as well, thus effectively reducing the probability of crack cracking, improving the durability and extending service life.

ACSR Strands Stress Numerical Simulation

2012 ◽  
Vol 256-259 ◽  
pp. 710-713
Author(s):  
Li Qin ◽  
Jun Kuo Li ◽  
Qiang Fu
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Principal Part ◽  
Concentration Level ◽  
Structural Characteristics ◽  
Stress And Strain ◽  
Electricity Power ◽  
Distribution Of Stress

As an important carrier of electricity power, ACSR is a principal part of power system and is directly related to the transmission line reliability and safety. ACSR strands stress analysis is the foundation of studying ACSR mechanical properties. In this paper, finite element method is used to analysis the Acsr strands stress. The structural characteristics of Acsr is considered and the complete Acsr model is created by ansys to simulate the distribution of stress and strain under appropriate boundary conditions. The Conclusions are drawn that both the state of strands stress and the stress concentration level are related with its structural properties. The strands of out layers bears more stress and firstly comes into plastic strain. The results of the research is helpful to the further study of ACSR strength and conductor fatigue life.

The study of the elastic deformation of a flexible wheel by a cam wave generator

2020 ◽  
Vol 65 (1) ◽  
pp. 51-58
Author(s):  
Sava Ianici
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Elastic Deformation ◽  
Theoretical Study ◽  
Elastic Field ◽  
The Finite Element Method ◽  
Elastic Deformations ◽  
Wave Generator ◽  
Two Stages

The paper presents the results of research on the study of the elastic deformation of a flexible wheel from a double harmonic transmission, under the action of a cam wave generator. Knowing exactly how the flexible wheel is deformed is important in correctly establishing the geometric parameters of the wheels teeth, allowing a better understanding and appreciation of the specific conditions of harmonic gearings in the two stages of the transmission. The veracity of the results of this theoretical study on the calculation of elastic deformations and displacements of points located on the average fiber of the flexible wheel was subsequently verified and confirmed by numerical simulation of the flexible wheel, in the elastic field, using the finite element method from SolidWorks Simulation.

Multi-Step Forward Finite Element Method for the Numerical Simulation of Sheet Metal Forming

2011 ◽  
Vol 474-476 ◽  
pp. 251-254
Author(s):  
Jian Jun Wu ◽  
Wei Liu ◽  
Yu Jing Zhao
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Mapping Method ◽  
Constitutive Relationship ◽  
Element Method

The multi-step forward finite element method is presented for the numerical simulation of multi-step sheet metal forming. The traditional constitutive relationship is modified according to the multi-step forming processes, and double spreading plane based mapping method is used to obtain the initial solutions of the intermediate configurations. To verify the multi-step forward FEM, the two-step simulation of a stepped box deep-drawing part is carried out as it is in the experiment. The comparison with the results of the incremental FEM and test shows that the multi-step forward FEM is efficient for the numerical simulation of multi-step sheet metal forming processes.

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