Stress Analysis of Local Compression on the Center of Plain Concrete Column

2012 ◽  
Vol 204-208 ◽  
pp. 3736-3739
Author(s):  
Yan Wang ◽  
Lian Zhai ◽  
Li Mei Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Plain Concrete ◽  
Concrete Column ◽  
Element Analysis ◽  
Strut And Tie

In this paper, studied on the local compression on the center of plain concrete square column, by using finite element analysis found its stress distribution is approximate to strut and tie models and established strut and tie models of concrete subjected to local compression.

Longitudinal Stress Analysis of Local Compression on the Center of Plain Concrete Column

2014 ◽  
Vol 578-579 ◽  
pp. 71-74 ◽  
Author(s):  
Yan Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Analysis ◽  
Plain Concrete ◽  
Area Ratio ◽  
Concrete Column ◽  
Longitudinal Stress ◽  
Element Analysis ◽  
Compression Area

Taking local compression on the center of plain concrete square column as an example, by using finite element analysis found that longitudinal stressdistribution and size of local compression on the center of plain concrete square column related to local compression acting position and local compression area ratio.

scholarly journals Analisa Tegangan Kerusakan pada Pin Hopper

2019 ◽  
Vol 8 (1) ◽  
pp. 17-24
Author(s):  
M. N. Setia Nusa
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Calculation Result ◽  
Allowable Stress ◽  
Plate Element ◽  
Visual Examination ◽  
Element Analysis ◽  
As Stress

Hopper pada Stage Regenerator mengalami kerusakan berupa jatuh dan robek. Hal ini disebabkan karena lepasnya salah satu pin yang menjadi tumpuan hopper. Setelah diperiksa ternyata pin tersebut bengkok dan salah satu stoppernya lepas.Dilakukan penelitian dengan analisa tegangan menggunakan Finite Element Analysis (FEA) dengan menggunakan type elemen plat untuk memodelkan shell Hopper dan solid elemen untuk Pin. Analisa tegangan dilakukan pada model Hopper untuk menentukan beban yang bekerja pada Pin kemudian dilakukan FEA pin untuk menentukan tegangan yang terjadi pada pin. Hasil perhitungan: Rupture allowable stress/Sr untuk 100.000 jam operasi sebesar 3,2 ksi (2,24 kg/mm2). Karena tegangan yang terjadi pada pin disebabkan oleh bending maka tegangan yang terjadi harus lebih kecil dari 1,5 Sr = 3,36 kg/mm2, jadi dari FEA distribusi tegangan Pin yang dipakai harus diameter 70 mm.Kata kunci : Hopper, Pin bengkok, Jatuh, FEA, Pin 70 mm.AbstractHopper at the stage regenerator failed due to falling and break, after visual examination it is found that the pin is bent and a stopper goes out. It is then conducted stress analysis using Finite Element Analysis (FEA) by means of plate element mode to model the hopper cell and solid element of the pin stress analysis is conducted for modelling the hopper is to determine working load on the pin followed by FEA to determine stresses taking place on the pin the calculation result are: rupture allowable stress (SR) for 100.000 operation hours is 3.2 Ksi (2.24 kg/mm2). As stress on the pin is caused by bending, the stress should be lower than 1.5 SR or 3.36 kg/mm2, and from FEA stress distribution on the pin should use pin with 70 mm in diameter.Keywords : Hopper, Bend, Fall, FEA, Pin 70 mm

Determination of the Gasket Stress Distribution

2017 ◽  
Author(s):  
Manfred Schaaf
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Radial Direction ◽  
Fundamental Principle ◽  
European Standard ◽  
Calculation Algorithm ◽  
Element Analysis

The European Standard EN 1591-1 is used for the calculation of bolted flanged joints, stress analysis as well as for tightness proofs. In this calculation procedure gasket characteristics according to EN 13555 are used to describe the mechanical and the tightening behavior of gasket materials. With further developments in the calculation algorithm and the use of the realistic gasket behavior in the calculation more detailed results can be obtained, which are comparable to results obtained from Finite Element Analysis. The flange rotation and the resulting uneven gasket stress distribution in the radial direction during the assembly of the flanged joint is the fundamental principle in this development. The effective compressed gasket width has influence on the required gasket forces for the tightness proof as well as on the mechanical behavior of the flanged joint, and thus also on the stress analysis. In this paper, the determination of the effective gasket width using a newly developed approach [1] is optimized and the verification of this approach with Finite Element Analysis for several different gasket materials and flange geometries is shown.

scholarly journals THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS OF CLASS 2 INLAY ON MANDIBULAR MOLAR USING VARIOUS MATERIALS

2018 ◽  
Vol 6 (7) ◽  
pp. 272-277
Author(s):  
Maj Pankaj Awasthi ◽  
Lt Col Sonali Sharma ◽  
Maj Summerdeep Kaur
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Von Mises Stress ◽  
Element Analysis ◽  
Tooth Structure ◽  
Mandibular Molar ◽  
Von Mises ◽  
Mandibular First Molar

Aim: To study the stress distribution in Class 2 Inlay of various materials on Mandibular Molar. Background: Inlays are fabricated using different materials like gold, porcelain or a cast metal alloy. Difference in the modulus of elasticity of the material and tooth structure would lead to generation of stresses leading to failure of the restoration or loss of tooth structure. Finite Element Analysis (FEA) is a mathematical tool for stress analysis in a structure. Von Mises stress being the combination of normal and shear stresses which occur in all directions. This stress has to be given diligent importance while considering the type and material of restoration to achieve long-term success. Methodology: In our study, stress analysis was performed on the mandibular first molar using a stress analysis software (ANSYS). A computer model of mandibular first molar was generated along with generation of an inlay volume using a FEA software preprocessor. The models with the class 2 inlays of different materials were subjected to 350N and 800N load simulating normal masticatory force and bruxism respectively. Maximum and minimum stresses were calculated for each model separately. Results: Von Mises stress distribution for different materials for normal masticatory forces and bruxism were studied and evaluated. Conclusion: The study revealed the maximum and minimum stresses imposed over the tooth and the restoration and provides insight into the areas which are more prone to fracture under the occlusal load.

Stress Analysis of Opening and Offset Nozzle on a Cylinder

2012 ◽  
Vol 614-615 ◽  
pp. 560-563
Author(s):  
Qing Gang Liu ◽  
Xi Qi Yu ◽  
Pei Ying Peng ◽  
Yan Shu Guo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Safety Requirement ◽  
Element Analysis

FEA(Finite Element Analysis) has been used in the stress analysis of two geometry sizes of opening and offset nozzle, corresponding standards has been included, and the results show that the strength of the cylinder is fit for safety requirement. The stress analysis also shows that the stress distribution principles are not dependent to the sizes of the opening, but closely to the positions. At the same time the magnitude of stress is relative to the size of the opening and the nozzle. So, stress analysis should be conducted to every offset opening and nozzle to ensure the safety of the cylinder.

scholarly journals Stress analysis for mandibular screw retained full arch prosthesis, all in 4 concept, with different cantilever extension.

2019 ◽  
Author(s):  
Moaz Mostafa Farrag
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Distribution Pattern ◽  
Analysis Software ◽  
Element Analysis ◽  
Bone Implant ◽  
Cantilever Length ◽  
Distribution Of Stresses

Abstract Compare the stress distribution pattern in two different cantilever length in mandibular screw retained prosthesis by computing the distribution of stresses in Bone/implant interface in different zone, magnitude and Direction of force applied using finite element analysis software.

scholarly journals Three-Dimensional Finite Element Analysis of Stress Distribution in a Tooth Restored with Full Coverage Machined Polymer Crown

2021 ◽  
Vol 11 (3) ◽  
pp. 1220
Author(s):  
Azeem Ul Yaqin Syed ◽  
Dinesh Rokaya ◽  
Shirin Shahrbaf ◽  
Nicolas Martin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Three Dimensional ◽  
Intraoral Scanner ◽  
Element Analysis ◽  
Dental Ceramic ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Ceramic Crown

The effect of a restored machined hybrid dental ceramic crown–tooth complex is not well understood. This study was conducted to determine the effect of the stress state of the machined hybrid dental ceramic crown using three-dimensional finite element analysis. Human premolars were prepared to receive full coverage crowns and restored with machined hybrid dental ceramic crowns using the resin cement. Then, the teeth were digitized using micro-computed tomography and the teeth were scanned with an optical intraoral scanner using an intraoral scanner. Three-dimensional digital models were generated using an interactive image processing software for the restored tooth complex. The generated models were imported into a finite element analysis software with all degrees of freedom concentrated on the outer surface of the root of the crown–tooth complex. To simulate average occlusal load subjected on a premolar a total load of 300 N was applied, 150 N at a buccal incline of the palatal cusp, and palatal incline of the buccal cusp. The von Mises stresses were calculated for the crown–tooth complex under simulated load application was determined. Three-dimensional finite element analysis showed that the stress distribution was more in the dentine and least in the cement. For the cement layer, the stresses were more concentrated on the buccal cusp tip. In dentine, stress was more on the cusp tips and coronal 1/3 of the root surface. The conventional crown preparation is a suitable option for machined polymer crowns with less stress distribution within the crown–tooth complex and can be a good aesthetic replacement in the posterior region. Enamic crowns are a good viable option in the posterior region.

scholarly journals A Machine Learning Approach as a Surrogate for a Finite Element Analysis: Status of Research and Application to One Dimensional Systems

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1654
Author(s):  
Poojitha Vurtur Badarinath ◽  
Maria Chierichetti ◽  
Fatemeh Davoudi Kakhki
Keyword(s):  
Machine Learning ◽  
Neural Networks ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Artificial Neural Networks ◽  
Stress Distribution ◽  
Maintenance Scheduling ◽  
Element Analysis ◽  
One Dimensional ◽  
Artificial Neural

Current maintenance intervals of mechanical systems are scheduled a priori based on the life of the system, resulting in expensive maintenance scheduling, and often undermining the safety of passengers. Going forward, the actual usage of a vehicle will be used to predict stresses in its structure, and therefore, to define a specific maintenance scheduling. Machine learning (ML) algorithms can be used to map a reduced set of data coming from real-time measurements of a structure into a detailed/high-fidelity finite element analysis (FEA) model of the same system. As a result, the FEA-based ML approach will directly estimate the stress distribution over the entire system during operations, thus improving the ability to define ad-hoc, safe, and efficient maintenance procedures. The paper initially presents a review of the current state-of-the-art of ML methods applied to finite elements. A surrogate finite element approach based on ML algorithms is also proposed to estimate the time-varying response of a one-dimensional beam. Several ML regression models, such as decision trees and artificial neural networks, have been developed, and their performance is compared for direct estimation of the stress distribution over a beam structure. The surrogate finite element models based on ML algorithms are able to estimate the response of the beam accurately, with artificial neural networks providing more accurate results.

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