Heat pipe cooling system of high-power three-level explosion-proof inverter based on the loss calculation and finite element analysis

2017 ◽  
Vol 31 (19-21) ◽  
pp. 1740005
Author(s):  
Yuan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Pipe ◽  
High Power ◽  
Cooling System ◽  
Engineering Application ◽  
Element Analysis ◽  
Cooling Systems ◽  
Critical Problems ◽  
Theory Calculation

The special using condition of high-power three-level explosion-proof inverter limits its cooling system within heat pipe and water-cooled cooling systems. How to calculate these two systems quantitatively to provide references for engineering application becomes one of the critical problems. In this paper, the principle of three-level explosion-proof was introduced first, and the power-loss generation theory was described and deduced into equations. Secondly, the heat pipe cooling system theory calculation was conducted based on the power losses of power devices, and the whole cooling system model was built by using finite element analysis. Finally, the temperature rise experiment was carried out on a 1 MW high-power three-level explosion-proof inverter, and the results proved the feasibility of this theory and its accuracy of analysis.

Separation of Primary Stress in Finite Element Analysis of Pressure Vessel with the Principle of Superposition

2007 ◽  
Vol 353-358 ◽  
pp. 373-376 ◽  
Author(s):  
Bing Jun Gao ◽  
Xiao Ping Shi ◽  
Hong Yan Liu ◽  
Jin Hong Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Engineering Application ◽  
Total Stress ◽  
Principle Of Superposition ◽  
Element Analysis ◽  
Primary Stress ◽  
The Finite Element Analysis ◽  
Asme Code ◽  
Allowable Load

A key problem in engineering application of “design by analysis” approach is how to decompose a total stress field obtained by the finite element analysis into different stress categories defined in the ASME Code III and VIII-2. In this paper, we suggested an approach to separate primary stress with the principle of superposition, in which the structure does not need to be cut into primary structure but analyzed as a whole only with decomposed load. Taking pressurized cylindrical vessel with plate head as example, the approach is demonstrated and discussed in detail. The allowable load determined by the supposed method is a little conservative than that determined by limited load analysis.

Theoretical Analysis and Engineering Improvement Test Verification of the Crack Problem in the Back Van of the Vehicle

2011 ◽  
Vol 121-126 ◽  
pp. 3431-3436
Author(s):  
Guo Quan Yang ◽  
You Qun Zhao ◽  
Jun Yan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Theoretical Analysis ◽  
Crack Problem ◽  
Engineering Application ◽  
Reference Value ◽  
Element Analysis ◽  
Crack Problems ◽  
The Finite Element Analysis ◽  
Test Verification

This paper discussed the theoretical analysis and engineering improvement test verification of the crack problem in the back van of the vehicle. Causes that may result in the crack problem are firstly analyzed and then determined by the finite element analysis. Improvement are given and proved to be effective by the test verification of an improved vehicle. The method used in this paper will contribute to the analysis and solution of the crack problems in some parts of the vehicle and has reference value in engineering application.

Finite Element Simulating of C/SiC Composite Bolt

2012 ◽  
Vol 268-270 ◽  
pp. 3-6
Author(s):  
Tao Huang ◽  
Yi Yan Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Elevated Temperature ◽  
Room Temperature ◽  
Engineering Application ◽  
Contact Friction ◽  
Element Analysis ◽  
Valuable Data ◽  
The Finite Element Analysis ◽  
Sic Composites

A numerical investigation was conducted to determine the mechanical behavior of C/SiC composites bolt under room temperature and elevated temperature. The influence of the contact friction coefficient on the stress and displacement was considered in the finite element analysis. The FEA results provided some valuable data for the engineering application of C/SiC composites bolt.

Accelerating the Product Development of a Commercial Vehicle Radiator using Finite Element Analysis

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
P.R. Roy ◽  
V. Hariram ◽  
M. Subramanian
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Product Development ◽  
Commercial Vehicle ◽  
Cooling System ◽  
Experimental Testing ◽  
Engine Oil ◽  
Operating Pressure ◽  
Element Analysis ◽  
Engine Cooling

Emissions such as Nox and CO resulting from the combustion of the diesel engines in the commercial vehicles leads to environmental degradation and ozone layer depletion. Alarming environment trend forces the government institutions to develop and enforce strict emission laws for the next generation transportation vehicles. Stricter emission laws mean higher operating pressure, temperature, reduced weight, tight packaging space, engine downsizing etc. Engine cooling systems are the critical components in the managing the engine cooling requirement of the commercial vehicle. Generally engine cooling system includes radiator, charge air cooler, engine oil cooler etc. Product development of thermal management system using the traditional design process takes more time, resource and money. To solve the complex design problem, numerical technique such as finite element analysis is performed upfront in the product development of the radiator to evaluate the structure behaviour under mechanical loading. In this paper, internal static pressure analysis of a radiator is presented to showcase the benefits of using the finite element technique earlier in the product design phase. Pressure cycle life at a critical joint of the radiator is calculated using strain-life approach. Finite element analysis aids in visualization of the hot spots in the design, comparing different design options with less turnaround time. Experimental testing and prototypes can be reduced. Risk of a product being failed is greatly minimized by performing the numerical simulation.

Risk-Based Stability Assessment of a Gantry Crane

2014 ◽  
Author(s):  
Bin Xu ◽  
Zhongjian Yu ◽  
Yuqing Yang ◽  
Xiaoying Tang ◽  
Tao Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Analytical Method ◽  
Engineering Application ◽  
Structure Design ◽  
Gantry Crane ◽  
Stability Assessment ◽  
Element Analysis ◽  
Risk Elements ◽  
Assessment Approach

Stability of a gantry crane was a challenge in its structure design. A new risk-based stability assessment approach was proposed in this paper. Analytical method was introduced firstly, and then finite element method was adopted to evaluate the stability of square bar. In order to verify the finite element models, results of buckling analysis were compared with the results of analytical method. Secondly, this finite element analysis was applied in stability assessment of a gantry crane, and through parameterized analysis risk elements were identified. Finally, risk-based stability assessment was applied to this gantry crane, and neural network algorithm was adopted to evaluate the risk elements which were defined by finite element analysis. The evaluating results were well consistetent with statistical data, which indicated this risk-based stability assessment approach was reliable which showed a potential in engineering application.

The Encapsulation of Finite Element Analysis Process about Bogie’s Side Frame Based on EASA

2014 ◽  
Vol 1030-1032 ◽  
pp. 1251-1254
Author(s):  
Huan Xie ◽  
Wei Zeng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Engineering Application ◽  
Integrated Analysis ◽  
Strength Analysis ◽  
Application Software ◽  
Engineering Analysis ◽  
Element Analysis ◽  
Analysis Process ◽  
Remote Invocation

Taking into account the problem of plenty repeated works during the operation of engineering application software, the integrated solution of engineering application software based on EASA (the encapsulate tools of software) was proposed for improving the analysis efficiency and ensuring the analysis accuracy of software purpose. Then taking the strength analysis of bogie’s side frame as an example, the integrated analysis interface of strength analysis about side frame was established, realized the remote invocation based on Web, and the efficiency of engineering analysis was improved.

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