Simulation on Steel Solidification and its Shrinkage in Mould of FTSC Slab

2012 ◽  
Vol 472-475 ◽  
pp. 2018-2023
Author(s):  
Li Guang Zhu ◽  
Jian Chen ◽  
Ying Xu ◽  
Cai Jun Zhang ◽  
Shuo Ming Wang
Keyword(s):  
Liquid Steel ◽  
Deformation Behavior ◽  
Theoretical Basis ◽  
Thin Shell ◽  
Thermal Deformation ◽  
Coupled Model ◽  
Thin Slab ◽  
Ansys Software ◽  
Solidification Shrinkage ◽  
Important Basis

The solidification shrinkage of liquid steel has an important impact on thermal deformation behavior of high-temperature thin shell. Solidification shrinkage of liquid steel is an important basis for structure and shap optimization of the mould. In this paper, a direct coupled model was built on heat transfer in solidification and stress-strain by using the ANSYS software. And solidification shrinkage of liquid steel with the interior temperature and stress distribution were studied in the process of steel solidification, and it provided a theoretical basis for the further optimization of shape of the thin slab FTSC mould. This study was based on analysis of temperature and stress, deriving calculation of solidification shrinkage of steel’s phase change on macro-state by calculating the variation discipline of the distance between nodes.

Research on Thermal Deformation Behavior of Marine crankshaft S34MnV Steel

2021 ◽  
Author(s):  
Zhenwei Zhang ◽  
Heng Li ◽  
Yuwei Zhou ◽  
Weimin Guo ◽  
Rui Jiang ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Thermal Deformation

Thermal deformation behavior of γ-TiAl based alloy by plasma hydrogenation

2020 ◽  
Vol 45 (58) ◽  
pp. 34214-34226
Author(s):  
Fuyu Dong ◽  
Yongda Liu ◽  
Yue Zhang ◽  
Weidong Li ◽  
Peter K. Liaw ◽  
...  
Keyword(s):  
Deformation Behavior ◽  
Thermal Deformation ◽  
Plasma Hydrogenation

scholarly journals Strengthening mechanism and thermal deformation behavior of Al-12Si/Fe piston composite

2020 ◽  
Vol 7 (1) ◽  
pp. 016596
Author(s):  
Hao Yang ◽  
Yuan Wang ◽  
Xiuchang Wang ◽  
Qihong Cen ◽  
Xiaohua Yu
Keyword(s):  
Deformation Behavior ◽  
Thermal Deformation ◽  
Strengthening Mechanism

Study of the Process of Turbine Blade and Fixture Design Based on UG and ANSYS

2011 ◽  
Vol 421 ◽  
pp. 369-372
Author(s):  
Jie Shao Xin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Turbine Blade ◽  
Theoretical Basis ◽  
Three Dimensional ◽  
Processing Technology ◽  
Fixture Design ◽  
Ansys Software ◽  
Element Analysis

This paper made an analysis on the process of turbine blade, and completed the three-dimensional design of milling and cutting fixture used in the process on the UG software. After the stress analysis of the workpiece is completed, the author made a finite element analysis on both the blades and the main parts of the fixture with the help of ANSYS software, the results of the research provide theoretical basis for the development of reasonable processing technology and reliable workpiece assembly.

Support Analysis of Horizontal Pressure Vessel Using FEA

2014 ◽  
Vol 592-594 ◽  
pp. 1220-1224
Author(s):  
Navin Kumar ◽  
Surjit Angra ◽  
Vinod Kumar Mittal
Keyword(s):  
Stress Analysis ◽  
Pressure Vessel ◽  
Theoretical Basis ◽  
Pressure Vessels ◽  
Loading Conditions ◽  
Ansys Software ◽  
Support Design ◽  
Horizontal Pressure ◽  
The Given

Saddles are used to support the horizontal pressure vessels such as boiler drums or tanks. Since saddle is an integral part of the vessel, it should be designed in such a way that it can withstand the pressure vessel load while carrying liquid along with the operating weight. This paper presents the stress analysis of saddle support of a horizontal pressure vessel. A model of horizontal pressure vessel and saddle is created in Ansys software. For the given boundry and loading conditions, stresses induced in the saddle support are analyzed using Ansys software. After analysis it is found that maximum localized stress arises at the saddle to vessel interface near the saddle horn area. The results obtained shows that the saddle support design is safe for the given loading conditions and provides the theoretical basis for furthur optimisation.

Supporting Structure Performances Analysis of Heavy-Duty Gas Turbine Based on Fluid-Solid Coupling Method

2015 ◽  
Author(s):  
Guohui Xu ◽  
Jian Zhou ◽  
Mingjian Lu ◽  
Haipeng Geng ◽  
Yanhua Sun ◽  
...  
Keyword(s):  
Thermal Stress ◽  
High Temperature ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Thermal Deformation ◽  
Coupled Model ◽  
Strength Analysis ◽  
Cooling Flow ◽  
Heavy Duty Gas Turbine ◽  
Steady State Heat Transfer

In order to achieve high working efficiency, modern gas turbines operate at high temperature which is close to the melting points of metal alloys. However, the support of turbine end suffers the thermal deformation. And the journal center position is also changed due to the effects of high temperature and shaft gravity. Tangential or radial supporting structures, which are composed of supporting struts, diffuser cones, hot and cooling fluid channel, are widely used in gas turbine hot end. Cooling technology is usually used to keep the bearing temperature in a reasonable range to meet requirements of strength and deformation of the supporting struts. In this paper, three major assumptions are proposed: (a) radiation is not considered, (b) cooling flow system is only partially modeled and analysis assumes significantly higher cooling flow that is not typical for current engines, and (c) only steady state heat transfer is considered. And a 3D fluid-solid coupled model based on finite-element method (FEM) is built to analyze the performances of both the tangential and the radial support. The temperature distribution, thermal deformation and stress of supports are obtained from CFD and strength analysis. The results show that either the tangential or radial support is used in a 270MW gas turbine; the thermal stress is about 90.3% of total stress which is produced by both thermal effects and shaft gravity. Comparing to the results from radial supports, it can be seen that the struts stress and position variation of journal center of tangential support are smaller. Due to a rotational effect of the bearing housing caused by the deformation of the tangential struts, the thermal stress in these tangential struts can be relieved to some extent. When both thermal effect and shaft gravity are considered, the stress of each tangential supporting strut is almost uniformly distributed, which is beneficial to the stability of rotor system in the gas turbine.

Dynamics Behaviors Analysis on the Column of Gear Grinding Machine

2012 ◽  
Vol 472-475 ◽  
pp. 1885-1888
Author(s):  
Ya Hui Wang ◽  
Xiao Zhong Ren
Keyword(s):  
Theoretical Basis ◽  
Natural Frequencies ◽  
Element Model ◽  
Vibration Modes ◽  
Ansys Software ◽  
Dynamic Behaviors ◽  
Structural Improvement ◽  
Gear Grinding ◽  
Column Structure ◽  
Grinding Machine

Aiming at the issue on the development of gear form grinding machine, a method for analyzing the dynamic behaviors of the machine column was introduced. Based on the model of gear grinding machine developed before, a suitable finite element model of the column was established firstly. Modal analysis on the column was carried out by means of ANSYS software, and the first five natural frequencies and vibration modes of the column were obtained. According to the analysis results, some improvements on the original column structure were made. By comparing the static and dynamic behaviors of several different rib structures presented, the best column structure is selected. This method offers theoretical basis for the structural improvement of gear grinding machine.

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