scholarly journals Simulation of the Pressure Vessel Saddle Thickness Effect to Stress Distribution

2021 ◽  
Vol 20 (1) ◽  
pp. 18
Author(s):  
Krisdiyanto Krisdiyanto
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Pressure Vessel ◽  
Maximum Stress ◽  
Thickness Effect ◽  
Cylinder Pressure ◽  
Gas Industry ◽  
Finite Element Software ◽  
Complex Design ◽  
As Stress

Cylinder pressure vessel is a device that is used to process industry, power industry, oil industry, and gas industry. Structure of pressure vessel has complex design that is used to accommodate force, temperature, internal pressure loading, etc. Pressure vessel loading is supported by two saddle. Loading pressure vessel is distributed to saddle as stress. Stress distribution can be checked by finite element software. Autodesk Inventor 2019 is a software that used finite element basic. This research aims to get the effect of pressure vessel saddle width to maximum stress at pressure vessel.

scholarly journals Force Transfer and Stress Distribution in an Implant-Supported Overdenture Retained with a Hader Bar Attachment: A Finite Element Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Preeti Satheesh Kumar ◽  
Kumar K. S. Satheesh ◽  
Jins John ◽  
Geetha Patil ◽  
Ruchi Patel
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Maximum Stress ◽  
Alveolar Bone ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Finite Element Software ◽  
Force Transfer ◽  
Edentulous Mandible

Background and Objectives. A key factor for the long-term function of a dental implant is the manner in which stresses are transferred to the surrounding bone. The effect of adding a stiffener to the tissue side of the Hader bar helps to reduce the transmission of the stresses to the alveolar bone. But the ideal thickness of the stiffener to be attached to the bar is a subject of much debate. This study aims to analyze the force transfer and stress distribution of an implant-supported overdenture with a Hader bar attachment. The stiffener of the bar attachments was varied and the stress distribution to the bone around the implant was studied. Methods. A CT scan of edentulous mandible was used and three models with 1, 2, and 3 mm thick stiffeners were created and subjected to loads of emulating the masticatory forces. These different models were analyzed by the Finite Element Software (Ansys, Version 8.0) using von Mises stress analysis. Results. The results showed that the maximum stress concentration was seen in the neck of the implant for models A and B. In model C the maximum stress concentration was in the bar attachment making it the model with the best stress distribution, as far as implant failures are concerned. Conclusion. The implant with Hader bar attachment with a 3 mm stiffener is the best in terms of stress distribution, where the stress is concentrated at the bar and stiffener regions.

A Modified Weld Structure of Layered Urea Reactor Based on Stress Analysis and Leak Detection

2012 ◽  
Vol 134 (3) ◽  
Author(s):  
Shugen Xu ◽  
Weiqiang Wang ◽  
Mengli Li
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Pressure Vessel ◽  
Calculation Result ◽  
Maximum Stress ◽  
Leak Detection ◽  
Finite Element Software ◽  
Weld Structure ◽  
Status Analysis ◽  
Modified Urea

In this paper, a modified weld structure of the layered urea reactor has been provided. In the modified structure, new circumferential weld can improve the stress status of the urea reactor. It has the both advantage of separated and integrated layered pressure vessel. This modified design is based on the stress status analysis and the requirement of leak detection. In order to evaluate the modified structure, stresses of original and modified urea reactor shell with interlayer gaps were calculated via Finite element software ANSYS 12.0. The calculation result shows that the maximum stress of the modified structure is reduced obviously in the same condition, and the leak of liner also can be detected effectively.

A Modified Weld Structure of Layered Urea Reactor Based on Stress Analysis and Leak Detection

2010 ◽  
Author(s):  
Shugen Xu ◽  
Weiqiang Wang ◽  
Mengli Li ◽  
Mingda Song
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Pressure Vessel ◽  
Calculation Result ◽  
Maximum Stress ◽  
Leak Detection ◽  
Finite Element Software ◽  
Weld Structure ◽  
Status Analysis ◽  
Modified Urea

In this paper, a modified weld structure of the layered urea reactor has been provided. In the modified structure, new circumferential weld can improve the stress status of the urea reactor. It has the both advantage of separated and integrated layered pressure vessel. This modified design is based on the stress status analysis and the requirement of leak detection. In order to evaluate the modified structure, stresses of original and modified urea reactor shell with interlayer gaps were calculated via Finite element software ANSYS 12.0. The calculation result shows that the maximum stress of the modified structure is reduced obviously in the same condition, and the leak of liner also can be detected effectively.

Research of the Connecting Form about the Spherical Shell and the Nozzle

2011 ◽  
Vol 413 ◽  
pp. 520-523
Author(s):  
Cai Xia Luo
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Model ◽  
Spherical Shell ◽  
Maximum Stress ◽  
Peak Stress ◽  
Element Model ◽  
Small Opening ◽  
Large Opening ◽  
Reducing Stress

The Stress Distribution in the Connection of the Spherical Shell and the Opening Nozzle Is Very Complex. Sharp-Angled Transition and Round Transition Are Used Respectively in the Connection in the Light of the Spherical Shell with the Small Opening and the Large One. the Influence of the Two Connecting Forms on Stress Distribution Is Analyzed by Establishing Finite Element Model and Solving it. the Result Shows there Is Obvious Stress Concentration in the Connection. Round Transition Can Reduce the Maximum Stress in Comparison with Sharp-Angled Transition in both Cases of the Small Opening and the Large Opening, Mainly Reducing the Bending Stress and the Peak Stress, but Not the Membrane Stress. the Effect of Round Transition on Reducing Stress Was Not Significant. so Sharp-Angled Transition Should Be Adopted in the Connection when a Finite Element Model Is Built for Simplification in the Future.

Effects of Sheet Thickness on Residual Stress Distribution by Laser Shock Processing of 7050-T7451 Aluminum Alloy

2011 ◽  
Vol 189-193 ◽  
pp. 3778-3781
Author(s):  
Yin Fang Jiang ◽  
Lei Fang ◽  
Zhi Fei Li ◽  
Zhen Zhou Tang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Stress Distribution ◽  
Residual Stresses ◽  
Sheet Thickness ◽  
Laser Shock ◽  
Laser Shock Processing ◽  
Element Analysis ◽  
Finite Element Software ◽  
Shock Processing

Laser shock processing is a technique similar to shot peening that imparts compressive residual stresses in materials for improved fatigue resistance. Finite element analysis techniques have been applied to predict the residual stresses from Laser shock processing. The purpose of this paper is to investigate of the different sheet thickness interactions on the stress distribution during the laser shock processing of 7050-T7451 aluminum alloy by using the finite element software. The results indicate that the sheet thickness has little effects on the compression stress in the depth of sheet, but great impacts on the reserve side.

Wing-Fuselage Lug Stress Prediction Using Finite Element Method

2013 ◽  
Vol 393 ◽  
pp. 317-322
Author(s):  
Abdul Malik Hussein Abdul Jalil ◽  
Wahyu Kuntjoro
Keyword(s):  
Finite Element ◽  
Load Distribution ◽  
Applied Load ◽  
Maximum Stress ◽  
Finite Element Models ◽  
Finite Element Analyses ◽  
Finite Element Software ◽  
Stress Prediction ◽  
Reaction Forces ◽  
The Individual

This paper describes the methodology to predict the stress level that occurs at the wing-fuselage lugs (joints). The finite element models of the wing, the wing lugs and the fuselage lugs were developed. Finite Element Analyses were performed using NASTRAN finite element software. CQUAD4 and BAR2 elements were used to represent the individual structures of the wing such as the ribs and stringers. The applied load was based on the symmetrical level flight condition. Once the load distribution acting at the wing had been calculated and applied, reaction forces at the nodes representing the wing lugs were obtained and these values applied to the lug models where the maximum stress value acting at the lugs was obtained.

Research of Reinforce Stress on the Pressure Structure of Submersible Vehicle

2014 ◽  
Vol 496-500 ◽  
pp. 590-593
Author(s):  
Guan Nan Chu ◽  
Qing Yong Zhang ◽  
Guo Chun Lu
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Stress Distribution ◽  
Hoop Stress ◽  
External Pressure ◽  
Finite Element Models ◽  
Cylinder Pressure ◽  
Simulation Experiments ◽  
Element Analysis ◽  
Load Carrying

In order to improve the load-carrying properties of pressure structure, a new method to improve the external bearing limit is put forward and residual stress is used. Based on finite element analysis, finite element models of cylinder pressure structure of submersible vehicle are established to produce hoop residual stress in the process of outward expansion. According to a lot of data of simulation experiments, the result indicates that hoop residual stress is compressive on the outer surface of the pipe and the hoop stress keeps tensile on the inside surface. This kind of stress distribution is helpful to the cylinder structure and can improve its bearing capacity of external pressure. Moreover, the rules of the residual stress are got. The influences of physical dimension, yield strength of material and the expansion rate to the stress distribution are analyzed. The measures to produce the stress distribution are also presented.

Analysis Research of Frame-Supported Transfer Beam with Opening Using Finite Element

2010 ◽  
Vol 163-167 ◽  
pp. 1620-1625
Author(s):  
Ji Yao ◽  
Ze Li ◽  
Ming Jun Peng
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Mechanical Behavior ◽  
Local Stress ◽  
Weak Spot ◽  
High Rise ◽  
Finite Element Software ◽  
Weak Part ◽  
Working Performance

This paper presents research on mechanical behavior of frame-supported transfer beams with or without opening in the high-rise buildings using commercial finite element software ANSYS. The result indicated that the hole only impacted the local stress distribution of transfer beam. From the overall view, stress distribution of frame-supported transfer beam with or without opening was almost same. But hole undermined the whole working performance of transfer beam and reduced transfer beam bearing capacity. Influence of the hole as the result of the stress concentration on transfer beam maked the spot became weak part. This weak spot needed to be strengthened in the practical struction members.

Random Vibration and Fatigue Analysis of Pressure Vessel

2013 ◽  
Vol 816-817 ◽  
pp. 695-697
Author(s):  
Mei Huang ◽  
Hao Yuan ◽  
Juan Ma ◽  
J.N. Tang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Strength ◽  
Pressure Vessel ◽  
Random Vibration ◽  
Maximum Stress ◽  
Fatigue Analysis ◽  
Element Method

In this article, finite element method is used to analyze the random vibration of the pressure vessel under the action of earthquake. The result shows that the maximum stress values are located at the bottom of the pressure vessel. At the same time, fatigue in this location has been analyzed. It can come to a conclusion that this pressure vessel meets the requirement of fatigue strength.

The Relationship between Deflection and Maximum Stress Distributed on the Layer Bottom in the Typical Semi-Rigid Bituminous Pavement Structure

2011 ◽  
Vol 97-98 ◽  
pp. 85-90 ◽  
Author(s):  
Zhi Zhong Zhao ◽  
Kui Li ◽  
Ning Zhang
Keyword(s):  
Finite Element ◽  
Maximum Stress ◽  
Structure Design ◽  
Construction Control ◽  
The Road ◽  
Finite Element Software ◽  
Pavement Structure ◽  
The Relationship ◽  
Highway Pavement

This article carries on the test to materials of the roadbed and the pavement in the room, and obtains mechanics computation parameter; Considered the road overload situation, we carries on the modeling computation to the typical semi-rigid bituminous pavement structure through using the finite element software; Carrying on the analysis, we obtains the correlation formula between the road deflection and various structures level maximum stress .it can provide the theory basis and the instruction experience for the highway pavement structure design, the examination and the construction control.

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