Thermo-mechanical finite element analysis incorporating the temperature dependent stress-strain response of low alloy steel for practical application to the hot stamped part

2010 ◽  
Vol 16 (2) ◽  
pp. 185-195 ◽  
Author(s):  
Hyun-Ho Bok ◽  
Myoung-Gyu Lee ◽  
Hoon-Dong Kim ◽  
Man-Been Moon
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Alloy Steel ◽  
Strain Response ◽  
Low Alloy Steel ◽  
Practical Application ◽  
Temperature Dependent ◽  
Stress Strain ◽  
Element Analysis ◽  
Stamped Part

scholarly journals Finite Element Analysis of Stress-Strain Response at the Tool Pin During Friction Stir Process

2015 ◽  
Vol 76 ◽  
pp. 522-527
Author(s):  
M. Shamil Jaffarullah ◽  
Nur’Amirah Busu ◽  
Cheng Yee Low ◽  
J.B. Saedon ◽  
Armansyah ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Response ◽  
Stress Strain ◽  
Element Analysis ◽  
Friction Stir Process ◽  
Friction Stir ◽  
Tool Pin

Evaluation of Dissimilar Socket Weld Connections

2006 ◽  
Author(s):  
Chakrapani Basavaraju
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stainless Steel ◽  
Alloy Steel ◽  
Finite Element Models ◽  
Low Alloy Steel ◽  
Element Analysis ◽  
Analysis Methodology ◽  
Higher Temperature ◽  
Symmetric Finite Element

In the power industry, stainless steel is widely utilized for instrumentation tubing, while the small bore branch piping up to the root valves is either of carbon steel (A106 Gr. B, A106 Gr. C) or low alloy steel (A335 Gr. P11, A335 Gr. P22), or intermediate alloy steel (A335 Gr. P91). Stainless steel is not widely used for small bore piping. Generally, socket weld connections are employed in small bore piping applications as well as for pipe to tube adapter locations in instrumentation for sampling and sensing line applications. In this paper, socket weld connections at pipe to tube adapter locations are evaluated to determine the acceptability for higher temperature service applications. Finite element analysis methodology, based on axi-symmetric finite element models, is utilized to obtain thermal discontinuity stresses at the dissimilar socket weld connection. Taking into account the stress and cyclic considerations, the dissimilar socket weld connection is evaluated. Limitations and guidelines are provided concerning the acceptability for higher temperature service.

Study on Cylindrical Heatsink Forging Process Considering Friction Condition

2019 ◽  
Vol 823 ◽  
pp. 141-144
Author(s):  
Tung Sheng Yang ◽  
Yong Nan Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Friction Factor ◽  
Testing Machine ◽  
Metal Flow ◽  
Compression Tests ◽  
Stress Strain ◽  
Element Analysis ◽  
Forging Process ◽  
Different Temperatures

The feasibility of forging of AL-1050 alloy of cylindrical heatsink under warm conditions is demonstrated in the present work. The stress-strain curves and friction factor play an important role in the cylindrical heatsink forging. The purpose of forging lubrication is to reduce friction between blank and die, and to decrease resistance of metal flow to die. The stress-strain curves at different temperatures are obtained by compressing tests. The friction factor between 1050 aluminum alloy and die material are determined at different temperatures by ring compression tests with graphite lubricants. The compressing and ring compressing tests are carried out by using the computerized screw universal testing machine. The finite element method is used to investigate the forming characters of the forging process. To verify the prediction of FEM simulation in the cylindrical heatsink forging process, the experimental parameters such as stress-strain curves and fiction factor, are as the input data during analysis. Maximum forging load and effective stress distribution are determined of the heatsink forging, using the finite element analysis. Finally, the cylindrical heatsink parts are formed by the forging machine under the conditions using finite element analysis.

Finite element analysis of stress–strain localization and distribution in Al-4.5Cu-2Mg alloy

2018 ◽  
Vol 28 (6) ◽  
pp. 1200-1215 ◽  
Author(s):  
Rahul BHANDARI ◽  
Prosanta BISWAS ◽  
Manas Kumar MONDAL ◽  
Durbadal MANDAL
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Strain Localization ◽  
Stress Strain ◽  
Element Analysis

Estimation of transverse tensile behavior of Zircaloy pressure tubes using ring-tensile test and finite element analysis

2012 ◽  
Vol 227 (6) ◽  
pp. 1177-1186 ◽  
Author(s):  
MK Samal ◽  
KS Balakrishnan ◽  
J Parashar ◽  
GP Tiwari ◽  
S Anantharaman
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Tensile Tests ◽  
Tensile Specimen ◽  
Displacement Curve ◽  
Stress Strain ◽  
Element Analysis ◽  
Transverse Tensile ◽  
Pressure Tubes ◽  
Load Displacement

Determination of transverse mechanical properties from the ring type of specimens directly machined from the nuclear reactor pressure tubes is not straightforward. It is due to the presence of combined membrane as well as bending stresses arising in the loaded condition because of the curvature of the specimen. These tubes are manufactured through a complicated process of pilgering and heat treatment and hence, the transverse properties need to be determined in the as-manufactured condition. It may not also be possible to machine small miniaturized specimen in the circumferential direction especially in the irradiated condition. In this work, we have performed ring-tensile tests on the un-irradiated ring tensile specimen using two split semi-cylindrical mandrels as the loading device. A three-dimensional finite element analysis was performed in order to determine the material true stress–strain curve by comparing experimental load–displacement data with those predicted by finite element analysis. In order to validate the methodology, miniaturized tensile specimens were machined from these tubes and tested. It was observed that the stress–strain data as obtained from ring tensile specimen could describe the load–displacement curve of the miniaturized flat tensile specimen very well. However, it was noted that the engineering stress–strain as directly obtained from the experimental load–displacement curves of the ring tensile tests were very different from that of the miniaturized specimen. This important aspect has been resolved in this work through the use of an innovative type of 3-piece loading mandrel.

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