Analysis of the Settlement of Roadbed-Culvert Transitional Section in the High Salinity Regions

2016 ◽  
Vol 835 ◽  
pp. 554-558
Author(s):  
Ya Ping Wu ◽  
Huan An Huang ◽  
Zhi Biao Xu ◽  
Jun Wang ◽  
Gang Wang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Salinity ◽  
Fine Sand ◽  
Field Monitoring ◽  
Treatment Technology ◽  
Element Analysis ◽  
Transition Section ◽  
Transitional Section ◽  
Load Conditions

In this paper, the construction treatment technology for the transition section connecting road and culvert founded on the high salt saturated fine sand is carried out, in which an actual project of a new local railway from XieTieshan to North Hobson in China is the background. Meanwhile,the field monitoring and finite element analysis of the settlement law of the transition section are carried out under different load conditions. The results are of referential significance to the settlement law and design of roadbed-culvert transitional section in high salinity regions.

scholarly journals Thermal Stress Analysis of Process Piping System Installed on LNG Vessel Subject to Hull Design Loads

2020 ◽  
Vol 8 (11) ◽  
pp. 926
Author(s):  
Se-Yun Hwang ◽  
Min-Seok Kim ◽  
Jang-Hyun Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Evaluation Model ◽  
Element Model ◽  
Piping System ◽  
Wave Load ◽  
Element Analysis ◽  
Expansion Joints ◽  
Load Conditions

In this paper, the procedure for the strength evaluation of the piping system installed on liquefied natural gas (LNG) carriers is discussed. A procedure that accounts for the ship’s wave load and hull motion acceleration (as well as the deformation due to the thermal expansion and contraction experienced by the hull during seafaring operations) is presented. The load due to the temperature and self-weight of the piping installed on the deck is also considered. Various operating and load conditions of the LNG piping system are analyzed. Stress analysis is performed by combining various conditions of sustained, occasional, and expansion loads. Stress is assessed using finite element analysis based on beam elements that represent the behavior of the piping. The attributes of the piping system components (such as valves, expansion joints, and supports) are represented in the finite element model while CAESAR-II, a commercial software is used for finite element analysis. Component modeling, load assignment, and load combinations are presented to evaluate pipe stresses under various load conditions. An evaluation model is selected for the piping arrangement of LNG and the evaluated stress is compared with the allowable stress defined by the American Society of Mechanical Engineers (ASME).

The Finite Element Analysis and Optimal Design to Inverted Umbrella Aerator

2011 ◽  
Vol 199-200 ◽  
pp. 187-192 ◽  
Author(s):  
Pu Xing ◽  
Jing Yun Zhao ◽  
Xiu Jie Yin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimal Design ◽  
Plug Flow ◽  
Solid Modeling ◽  
Weak Links ◽  
Treatment Technology ◽  
Element Analysis ◽  
Design And Optimization ◽  
Analysis Process

The inverted umbrella aerator is the key equipment of biological wastewater treatment technology, which have the effects of oxygenation, mixing and plug-flow. the design and optimization of the mixing impeller is most important to the efficiency of oxygenation.In this paper, the solid modeling and finite element analysis and optimal design of aerator blades was made based on the study of the oxygenation mechanism.Firstly, the working process of the blades have been studied through solid modeling, mesh generation and finite element analysis process, and the stress-strain finite element analysis was offered based on Nastran, which identified the weak links in the leaves. And more, the optimize and improve designs for the production was made,which set the foundation for the manufacture of the blades.

Analysis of Losses and Thermal in Induction Motors

2013 ◽  
Vol 446-447 ◽  
pp. 503-508
Author(s):  
Xiao Feng Ding ◽  
Hui Chang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Pulse Width ◽  
Induction Motors ◽  
Thermal Characteristics ◽  
Sinusoidal Voltage ◽  
Element Analysis ◽  
Voltage Supply ◽  
Pulse Width Modulated ◽  
Load Conditions

This paper presents an investigation into the losses and thermal characteristics of induction motors operated from pulse width-modulated (PWM) voltage supply in comparison to that operated from sinusoidal voltage supply. It was concluded that due to the abundant harmonics in the PWM waveforms, significant losses are induced in the motor by the inverter supply. The temperature ascends correspondingly. Experiments were conducted with no load and with load conditions. The losses and thermal characteristics were calculated using finite element analysis (FEA) and validated by the experiments.

Induction Motor Rotor Quantities at Load Conditions: Finite Element Analysis and Experimental Validation

2006 ◽  
Vol 42 (10) ◽  
pp. 3476-3478 ◽  
Author(s):  
A. Bellini ◽  
O. Bottauscio ◽  
M. Chiampi ◽  
C. Tassoni ◽  
M. Zucca
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Induction Motor ◽  
Experimental Validation ◽  
Element Analysis ◽  
Load Conditions

Finite element analysis of hybrid composite material based leaf spring at various load conditions

2020 ◽  
Vol 33 ◽  
pp. 3540-3548
Author(s):  
S. Seralathan ◽  
Hemanth Prasanna ◽  
J. Arun ◽  
B. Guhanesh ◽  
D. Prasanth ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Composite Material ◽  
Hybrid Composite ◽  
Leaf Spring ◽  
Element Analysis ◽  
Hybrid Composite Material ◽  
Load Conditions

Static Finite Element Analysis of Large Liquefied Natural Gas Prestressed Storage Tank

2014 ◽  
Vol 578-579 ◽  
pp. 173-176
Author(s):  
Wei Ling Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Storage Tank ◽  
Liquefied Natural Gas ◽  
Element Analysis ◽  
Temperature Load ◽  
Calculation Results ◽  
Control Load ◽  
Prestressed Reinforcement ◽  
Load Conditions

Finite element analysis of LNG prestressed storage tank which was under various load conditions was carried out. The calculation results show that the low temperature load and prestress force are the control load which affect the storage tank stress. Further,some recommendations on the configuration of the prestressed reinforcement have been made so as to provide the basis for the design optimization of prestressed LNG tanks.

scholarly journals Fossils and FEA

2012 ◽  
Vol 134 (03) ◽  
pp. 44-47
Author(s):  
Jean Thilmany
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Behavior ◽  
Complex Geometries ◽  
Biological Applications ◽  
Skeletal System ◽  
Element Analysis ◽  
Non Invasive ◽  
Load Conditions

This article explores the application of finite element analysis (FEA) in studying the evolution of animals, including dinosaurs. Scientists have applied the method to determine how dinosaurs originally looked and functioned, and how they and other animals changed and evolved through the years. FEA is a useful tool to reconstruct the mechanical behavior of the muscle and skeletal system in zoological and paleontological studies because it is non-invasive and reconstructs stress at multiple sites and depths throughout the skeleton. It can be used to study extinct animals by way of their fossilized remains and can deal with complex geometries and load conditions. FEA is now routinely used to interpret skeletal forms for function in both medical and biological applications. The scientists believe that FEA will hopefully allow to see the effect of eating hard foods, such as the belemnites with their bullet-shaped guards. FEA allows a far more intricate, accurate, and precise picture of the bone to be used in studies.

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