Thermal analysis of the intact mandibular premolar: a finite element analysis

2013 ◽  
Vol 46 (9) ◽  
pp. 841-846 ◽  
Author(s):  
I. Z. Oskui ◽  
M. N. Ashtiani ◽  
A. Hashemi ◽  
H. Jafarzadeh
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis

Simulation of Nine-Spacer Nozzle’s Flow Field of Al Roll-Casting Using Coupled Fluid-Thermal Finite Element Analysis

2010 ◽  
Vol 159 ◽  
pp. 697-702
Author(s):  
Ying Zhou ◽  
Ya Xi Tan
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Flow Field ◽  
Three Dimensional ◽  
Fem Simulation ◽  
Cooling Capacity ◽  
Element Analysis ◽  
Roll Casting ◽  
Element Simulation

A three-dimensional coupled fluid-thermal finite element simulation model has been developed to provide analyzing distribution of velocity and temperature of nine-spacer nozzle by using FEM simulation of FLOTRAN module in ANSYS 6.0. To explore fluid-thermal analysis of the flow fields of nine-spacer nozzle of aluminum roll-casting, stricter analysis of postprocessing result was conducted by MATLAB. It was concluded that flow field of nine-spacer nozzle was able to match cooling capacity of cast rollers, but nine-spacer nozzle’s geometric flaw didn’t suit for working in the case of speed increasing of the drawing-sheet and thickness reducing of the aluminium sheet during roll casting.

scholarly journals NUMERICAL SIMULATION ON JOINING OF CERAMICS WITH METAL BY FRICTION WELDING TECHNIQUE

2013 ◽  
Vol 22 ◽  
pp. 190-195 ◽  
Author(s):  
N. RAJESH JESUDOSS HYNES ◽  
P. NAGARAJ ◽  
S. JOSHUA BASIL
Keyword(s):  
Numerical Simulation ◽  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Temperature Distribution ◽  
Friction Welding ◽  
Transient Liquid Phase ◽  
Sheet Thickness ◽  
Welding Process ◽  
Element Analysis

The joining of ceramic and metals can be done by different techniques such as ultrasonic joining, brazing, transient liquid phase diffusion bonding, and friction welding. Friction Welding is a solid state joining process that generates heat through mechanical friction between a moving workpiece and a stationary component. In this article, numerical simulation on thermal analysis of friction welded ceramic/metal joint has been carried out by using Finite Element Analysis (FEA) software. The finite element analysis helps in better understanding of the friction welding process of joining ceramics with metals and it is important to calculate temperature and stress fields during the welding process. Based on the obtained temperature distribution the graphs were plotted between the lengths of the joint corresponding to the temperatures. To increase the wettability, aluminium sheet was used as an interlayer. Hence, numerical simulation of friction welding process is done by varying the interlayer sheet thickness. Transient thermal analysis had been carried out for each cases and temperature distribution was studied. From the simulation studies, it is found that the increase in interlayer thickness reduces the heat affected zone and eventually improves the joint efficiency of alumina/aluminum alloy joints.

Unsteady Analysis of a Mechanical Seal Using Duhamel’s Method

2004 ◽  
Vol 127 (3) ◽  
pp. 623-631 ◽  
Author(s):  
Richard F. Salant ◽  
Bin Cao
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Numerical Model ◽  
Numerical Experiment ◽  
Auxiliary Function ◽  
Mixed Lubrication ◽  
Mechanical Seal ◽  
Element Analysis ◽  
Semiempirical Approach

An unsteady numerical model of a mechanical seal, with mixed lubrication, has been developed. The thermal analysis is performed using Duhamel’s method in combination with a numerical experiment to determine Duhamel’s auxiliary function. The results using this semiempirical approach compare well with those from a finite element analysis. The model has been used to predict the performance of a mechanical seal during startup and shutdown.

Spatial and temporal thermal analysis of acousto-optic deflectors using finite element analysis model

Ultrasonics ◽  
2012 ◽  
Vol 52 (5) ◽  
pp. 643-649 ◽  
Author(s):  
Runhua Jiang ◽  
Zhenqiao Zhou ◽  
Xiaohua Lv ◽  
Shaoqun Zeng ◽  
Zhifeng Huang ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model

scholarly journals Structural and Thermal Analysis of Brake Drum

2020 ◽  
Vol 6 (12) ◽  
pp. 8-15
Author(s):  
Shaik Chand Mabhu Subhani A.Pavan Kumar and Dr.D Venkata Rao
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Cast Iron ◽  
Thermal Stresses ◽  
Carbon Composite ◽  
Brake Disc ◽  
Element Analysis ◽  
Drum Brake ◽  
Brake Drum

The brake drum is a specialized brake that uses the concept of friction to decelerate or to stop the vehicle. The deceleration is achieved by the assistance of the friction generated by a set of brake shoes or pads. During the brake operation heat is ejected out this causes damage to the brake. Disc (Rotor) brakes are exposed to large thermal stresses during routine braking and extraordinary thermal stresses during hard braking. To satisfy this condition the drum material should possess a high thermal conductivity, thermal capacity and high strength .The common material used for construction of brake drum is cast iron. The aim of the project is to design, model a disc. Modeling is done using catia. Structural and Thermal analysis is to be done on the drum brakes using four materials Stainless Steel, gray Cast iron, carbon carbon composite & aluminum metal matrix. The shoes of this kind of brake are contained within the drum and expand outwards when the brake is applied. Such kind of brakes is used in medium heavy-duty vehicles. Structural analysis is done on the drum brake to validate the strength of the drum brake and thermal analysis is done to analyze the thermal properties. Comparison can be done for deformation; stresses, temperature etc. form the three materials to check which material is best. Catia is a 3d modeling software widely used in the design process. ANSYS is general-purpose finite element analysis (FEA) software package. Finite Element Analysis is a numerical method of deconstructing a complex system into very small pieces (of user-designated size) called elements.

Localized Deposition of Polysilicon for MEMS Post-Fabrication Processing

1999 ◽  
Author(s):  
Daphne Joachim ◽  
Liwei Lin
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Thermal Decomposition ◽  
Finite Element ◽  
Peak Temperature ◽  
Process Conditions ◽  
Element Analysis ◽  
Deposition Rates

Abstract In this paper, the localized deposition of polysilicon is demonstrated on suspended and attached microbeams. The microbeams are 1, 2 and 5μm wide; 0.5, 1.5 and 2μm thick; and 50 and 100 μm long. Polysilicon is deposited by thermal decomposition of silane gas on the electrically-heated structures. The peak temperature of each microbeam is estimated using finite element analysis and an electro-thermal analysis is discussed. The deposited silicon is amorphous or polycrystalline, depending on the process conditions. The deposition rates are much higher than those of conventional LPCVD polysilicon. Localized polysilicon deposition is useful in MEMS post-fabrication processes such as tuning resonators and sealing packages.

Thermal Analysis Module of ANSYS

2014 ◽  
Vol 1030-1032 ◽  
pp. 653-656 ◽  
Author(s):  
Ling Wei Lv
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Basic Principle ◽  
Post Treatment ◽  
Ansys Software ◽  
Analysis Software ◽  
Element Analysis ◽  
Data Pretreatment

Briefly introduced ANSYS software in this paper,especially its powerful function as a kind of finite element analysis software in terms of thermal analysis. Describes the basic principle of ANSYS thermal analysis、analysis steps and method of data pretreatment and post-treatment, discussed the application of ansys and problems needing attention. in thermal analysis

Design and Thermal Analysis of MgZrO3 Ceramic Coated I.C. Engine Piston Based on Finite Element Analysis (FEA)

2018 ◽  
pp. 156-176
Author(s):  
Shailendra Kumar
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Cast Iron ◽  
Combustion Engine ◽  
Machine Design ◽  
Main Shaft ◽  
Connecting Rod ◽  
Element Analysis ◽  
Engine Piston

Piston is considered to be one of the most important part of internal combustion engine. Piston is used to deliver thrust via connecting rod to the main shaft of the engine. Normally it is made of cast iron which bears high gas pressure and has damping property. The main objective of this chapter is to perform structural and thermal analysis of MgZrO3 top surface ceramic coated piston. Piston made up of gray cast iron coated with ceramic material (MgZrO3) which is bonded by special material (NiCrAl) is designed by machine design approach to determine the dimensions of the piston and Finite Element Analysis (FEA) was performed using ANSYS 17.1. The pressure of the 5 N/mm2 was applied at top land of piston. An equivalent Von misses stress in ceramic coated piston was found less in comparison to uncoated piston. Thermal analysis of both coated and non-coated piston was performed.

A FINITE ELEMENT ANALYSIS APPROACH TO IMPROVE INTEROPERABILITY FOR THERMAL ENERGY SIMULATIONS

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Yaowen Ou ◽  
Yunus Emre Harmanci ◽  
Qian Chen ◽  
Borja Garcia de Soto ◽  
Vasileios Ntertimanis ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Thermal Energy ◽  
Information Exchange ◽  
Current Practice ◽  
Design Stage ◽  
Element Analysis ◽  
Main Challenge ◽  
Geometrical Information

Information exchange between architectural design models and Thermal Energy Simulation (TES) tools still suffers from interoperability problems. The main challenge is to robustly translate the geometrical information required for TES. The current practice involves a cumbersome and iterative manual correction of the model between the architect and the engineer, which is prone to human errors. Interpreting the geometry solely based on the IFC file is not a trivial process due to its complex nature, in which different attributes are cross-linked to each other. To address this issue, an approach based on the Finite Element Analysis (FEA) is proposed, which aims to provide straightforward readability of geometrical information as well as a reliable and flexible thermal simulation. To demonstrate this approach, an IFC model of a residential building was transferred to a commercial FEA software and thermal analysis was conducted. Interoperability problems regarding robust transfer of geometrical information were not encountered and the process was deemed to be efficient. FEA also revealed another strength by providing thermal analysis of individual components of the structure. This can be employed in the early design stage by rapid prototyping of different components (e.g., geometry, thermal properties) and their role on the thermal performance of the whole structure. Results are presented by comparing the proposed approach with the current practice and the potential advantages are highlighted.

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