Thermal Deformation Analysis of Copper Microbridges with Speckle Interferometry and Finite Element

2007 ◽  
Vol 353-358 ◽  
pp. 2871-2874
Author(s):  
Zhao Zhang ◽  
Xi De Li ◽  
Wen Shen
Keyword(s):  
Finite Element ◽  
Thermal Deformation ◽  
Thermal Loading ◽  
Speckle Interferometry ◽  
Deformation Analysis ◽  
Testing System ◽  
Element Analysis ◽  
Digital Thermometer ◽  
The Finite Element Analysis ◽  
Different Dimensions

In this paper, a speckle microinterferometric system was employed to study the thermal deformation of the Cu microbridges with different dimensions. The deflections of the microbridges caused by the thermal loading were measured with real-time by the speckle microinterferometric system and the surface temperatures of the bridges were recorded using a digital thermometer. The deformation evaluation after microbridges buckling was also recorded with our testing system. Then, the experimental results were compared with the finite element analysis (FEA).

Thermal Deformation Analysis for the Guideway of Large-Type CNC Lathe Based on Finite Element Method

2011 ◽  
Vol 58-60 ◽  
pp. 198-204
Author(s):  
Feng Shou Zhang ◽  
Don Gyan Wang ◽  
Jian Ting Liu ◽  
Feng Kui Cui
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Thermal Deformation ◽  
Thermal Characteristics ◽  
Thermal Error ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Large Type ◽  
Cnc Lathe ◽  
Optimizing Design

Friction between the guideway and the bench of large-type CNC lathe will cause thermal deformation of the guideway, which causes processing error of the lathe，thereby reduces machining precision of the workpiece. The authors establish the mathematical model of temperature field and thermal deformation of the guideway in the work process, numerically simulate the guideway thermal characteristics by ANSYS finite element analysis software, and obtain the distribution regularities of temperature field and thermal deformation and their major influencing factors, which provide a theoretical basis for optimizing design and thermal error compensation design of the lathe guideway.

Deformation Analysis of Simple-Shear Sheet Specimens

1995 ◽  
Vol 117 (3) ◽  
pp. 269-277 ◽  
Author(s):  
Fuh-Kuo Chen
Keyword(s):  
Finite Element ◽  
Shear Deformation ◽  
Shear Zone ◽  
Simple Shear ◽  
Pure Shear ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Shear Properties ◽  
The Finite Element Analysis ◽  
Strength Material

The shear properties of different simple-shear sheet specimens were investigated using the elastic-plastic finite element method. Tension loaded specimens with a shear zone formed at the center area between two transverse slots were adopted to analyze the shear properties of sheet metals under uniaxial tension. Specimens prepared by single material as well as by bonding two different strength materials together were both studied. Since the shear zone could not be kept free from bending stress during loading, the pure shear deformation was not possibly obtained. However, by varying the shape and the location of the slots, an optimum geometry of the shear zone which yields a nearly pure shear deformation in the plastic range was determined through the finite element analysis. The results also revealed when the shear zone was formed by a low strength material which was bonded on each side with a higher strength material, a nearly pure shear deformation could be obtained even in the elastic range.

Groove Optimization and Finite Element Analysis for Different Groove Milling Insert

2012 ◽  
Vol 151 ◽  
pp. 716-720
Author(s):  
Yao Nan Cheng ◽  
Li Quan Wang ◽  
Zhen Jia Li ◽  
Jun Gao ◽  
Xiao Chun Ao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Field Analysis ◽  
Orthogonal Experimental Design ◽  
Testing System ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Experimental Design Method ◽  
Stress Field Analysis

Based on the experiments on milling the 45 steel with several types of different grooves milling inserts, this article has groove optimization and finite element analysis for different groove milling inserts. With the milling force testing system and orthogonal experimental design method, we have experiments with five types of different groove milling inserts for machining the 45 steel and compare their cutting capability, and the different grooves milling inserts are optimized. Based on the experiments, we have stress field analysis for different grooves milling inserts with finite element analysis method. The finite element analysis results are consistent with the experiment results well. All these studies provide the theoretic and experimental bases for groove development and groove optimization technology.

The Finite Element Analysis of the Excavation on Adjacent Buildings Based on Mohr Coulomb Model

2011 ◽  
Vol 374-377 ◽  
pp. 2171-2175 ◽  
Author(s):  
Dong Dong Zhang ◽  
Jun Feng Zhou ◽  
Wei Guo Zhang ◽  
Cheng Bing Zhu ◽  
Rui Rui Sun ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Deformation Analysis ◽  
Good Prediction ◽  
Deep Excavation ◽  
Element Analysis ◽  
Adjacent Buildings ◽  
The Finite Element Analysis ◽  
Coulomb Model ◽  
Design And Practice

The design and practice of a deep excavation in shanghai was presented. The FEM based on Mohr coulomb Model was adopted to analyze the deformation of the excavation and its effect on adjacent buildings. This method gives good prediction of both the deformation of the soil retaining structures and the settlement of the soils behind the wall after comparing with measured datas. Meanwhile, the method is suitable to deformation analysis of sensitive environment circumstance.

The Finite Element Analysis of Thermal Property of High-Speed Spindle System in Vertical Machining Center

2012 ◽  
Vol 433-440 ◽  
pp. 567-571 ◽  
Author(s):  
Hong Mei Sun ◽  
Yan Zhong Wang
Keyword(s):  
Finite Element ◽  
Thermal Property ◽  
High Speed ◽  
Thermal Deformation ◽  
Input Parameter ◽  
Element Analysis ◽  
Spindle System ◽  
Machining Center ◽  
The Finite Element Analysis ◽  
Thermal Steady State

The thermal property of the high-speed spindle system in vertical machining center was studied by using finite element method ( FEM ). When the spindle runs at the speed of 4300r/min, the system reaches the thermal steady state after 17 minutes, the temperature distribution in the spindle was symmetrical, and the highest temperature is in the inner ring the front bearing, with temperature rise of 36.7 .With the cutting force as load, The calculated result was taken as an input parameter in Abaqus software, the results of which show the thermal deformation of the spindle. The maximum thermal deformation of the spindle is 1.185 × 10-2 mm, on the shoulder, near the edge of the cutter.

The Strength and Deformation Analysis on the Top Steel-Tube Truss Supporting System of Silo

2013 ◽  
Vol 351-352 ◽  
pp. 760-764
Author(s):  
Tie Cheng Wang ◽  
Wen Xing Wang ◽  
Hai Long Zhao ◽  
Qin Shan Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Vertical Displacement ◽  
Steel Tube ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Supporting System ◽  
The Finite Element Analysis ◽  
Strength And Deformation ◽  
Maximal Displacement

The influence of diameters and loads on the displacement of truss supporting system is evaluated based on the results of the finite element analysis on the steel-tube truss supporting system of silo. The vertical displacement increases with the increasing of the load. The displacement increases with the increasing of the diameter in the same loads. The maximal displacement appears in the intermediate position of the truss, and the displacements of symmetric nodes are similar under the symmetric loads. The member yields before 30m of truss supporting system reaches the allowable deflection.

Finite Element Analysis of a Proposed New Express Car Wheel Design

2002 ◽  
Author(s):  
Gregory Gagarin ◽  
Cameron Lonsdale ◽  
James Pilch ◽  
Steven Dedmon
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Computer Simulations ◽  
Thermal Load ◽  
Thermal Loading ◽  
Development Work ◽  
Element Analysis ◽  
Braking System ◽  
The Finite Element Analysis ◽  
Future Work

This paper describes the engineering development work associated with a new wheel design intended for use under a proposed new, 256,000 pounds gross rail load (GRL) express car to be run at speeds up to 110 mph. Initial project assumptions are reviewed, and the new car’s proposed combination disc/tread braking system is described. Several assumed braking scenarios, based upon different thermal loading scenarios including a grade braking sequence to be experienced by the proposed new car in service, were used to determine the braking (thermal) load inputs for the finite element analysis (FEA) work. Wheel stress and temperature results from the various FEA computer simulations are reviewed and discussed in the context of wheel suitability and safety. Recommendations for future work are also discussed.

Interactive Graphics for the Analysis of Tires

1985 ◽  
Vol 13 (3) ◽  
pp. 127-146 ◽  
Author(s):  
R. Prabhakaran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Approximate Solutions ◽  
Interactive Graphics ◽  
Element Analysis ◽  
Analysis Process ◽  
Physical Problems ◽  
The Finite Element Analysis ◽  
Analysis Computer ◽  
Discretization Technique

Abstract The finite element method, which is a numerical discretization technique for obtaining approximate solutions to complex physical problems, is accepted in many industries as the primary tool for structural analysis. Computer graphics is an essential ingredient of the finite element analysis process. The use of interactive graphics techniques for analysis of tires is discussed in this presentation. The features and capabilities of the program used for pre- and post-processing for finite element analysis at GenCorp are included.

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