STRESS ANALYSIS IN DURABILITY TESTS OF SINTERED STEEL GEARS WITH DIFFERENT DENSITIES USING FEM MODEL CONSIDERING VOIDS

2017 ◽  
Vol 2017 (0) ◽  
pp. 06-01
Author(s):  
Takahiro NAGATA ◽  
Teruie TAKEMASU ◽  
Takao KOIDE
Keyword(s):  
Stress Analysis ◽  
Sintered Steel ◽  
Fem Model

scholarly journals Stress Analysis of Occlusal Force by use of the Mandibular FEM Model

1978 ◽  
Vol 22 (3) ◽  
pp. 574-579 ◽  
Author(s):  
Koji Omagari ◽  
Hiroshi Ikeda ◽  
Takashi Okamoto ◽  
Takuji Kuroda ◽  
Takao Maruyama ◽  
...  
Keyword(s):  
Stress Analysis ◽  
Fem Model ◽  
Occlusal Force

scholarly journals Hydrostatic pressure loads for a tank using “CID Distributed Loads” fields in a PATRAN FEM model

2021 ◽  
Vol 13 (4) ◽  
pp. 197-204
Author(s):  
Daniela BARAN ◽  
Mihaela PETRE
Keyword(s):  
Hydrostatic Pressure ◽  
Critical Load ◽  
Stress Analysis ◽  
Fem Analysis ◽  
Fem Model ◽  
The Real ◽  
Fuel Tanks

The purpose of this paper is to present a practical way to introduce distributed loads on the walls of a tank in order to perform a FEM analysis using PATRAN/NASTRAN programs. The problem is generated mainly by the fact that there are gravitational accelerations in the three directions of the moving airplane that produce a great number of combinations of inertial loads and consequently a great number of critical load cases. We compared the performed stress analysis with the loads obtained with this method in different cases for 𝑛𝑛=1. (Different forms of the fuel tanks and different placements of the tank inside the aircraft). The form and the density of the grid do not significantly affect the precision of the real inertia loads. Using the presented method one can reduce the volume of FEM files used in the analysis and can quite accurately reproduce the pressure loads on the fuel of a moving aircraft.

1E46 Construction of 3-D FEM model of Spinal cord and Stress Analysis for Nerve Root Area

2015 ◽  
Vol 2015.27 (0) ◽  
pp. 221-222
Author(s):  
Shusuke TOMIYAMA ◽  
Kazuhiko ICHIHARA ◽  
Junji OHGI ◽  
Xian CHEN ◽  
Itsuo SAKURAMOTO ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Stress Analysis ◽  
Nerve Root ◽  
Fem Model ◽  
Root Area

Stress Analysis of the Rotating Circular Saw Blade

2017 ◽  
Vol 261 ◽  
pp. 259-266 ◽  
Author(s):  
Ondřej Bílek ◽  
Martin Kovařík
Keyword(s):  
Stress Analysis ◽  
Maximum Stress ◽  
Fem Model ◽  
Circular Saw ◽  
State Of Stress ◽  
Circular Saw Blade ◽  
Wood Cutting ◽  
Saw Blade ◽  
Determination Of Parameters

The article deals with the determination of parameters of longitudinal wood cutting by circular saw blade and construction of the cutting tool. A computational model was chosen to determine stress of the rotating circular saw blade. Stress analysis revealed that maximal stress caused by the temperature gradient was approximately ten times higher than the maximum stress extrapolated from centrifugal forces. In this work were determined the critical speed of the circular saw blade and the power needed to spin. The contribution of this work is the algorithm of the power required for longitudinal wood cutting wood by a circular saw blade, which allows optimal machine tool proposal. Moreover, the calculated state of stress is compared to the FEM model.

scholarly journals A Stress Analysis of a Conical Pick by Establishing a 3D ES-FEM Model and Using Experimental Measured Forces

2019 ◽  
Vol 9 (24) ◽  
pp. 5410
Author(s):  
Qiuxia Fan ◽  
Qianqian Zhang ◽  
Guirong Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Wear Resistance ◽  
Stress Analysis ◽  
Accurate Solution ◽  
Mining Operations ◽  
Fem Model ◽  
Conical Pick ◽  
Comparison Results ◽  
Element Method

This paper presents a procedure for an accurate and reliable stress analysis in a conical pick used in mining operations, aiming to improve their wear resistance. This is achieved by (1) establishment of a three-dimensional (3D) edge-based smoothed finite element method (ES-FEM), and algorithms of creating the smoothing domain for accurate solution in terms of stress and strain distributions; and (2) use of experimentally measured actual forces using a full-scale rotary cutting machine. In our 3D ES-FEM model, the physical domain for the pick is first discredited using linear triangular elements that can be generated easily for complicated geometries. The smoothing domains are then constructed based on edges of these elements in an automated fashion. In order to create the smoothing domains for the smoothed strain computation in the ES-FEM, an algorithm is presented for establishing connection between nodes, edges, faces, and elements. Each smoothing domain is bounded by a set of enclosed line-segments, besides, leading to a connectivity list for later effective computation. To show the effectiveness and accuracy of the strain energy and the displacement solution of ES-FEM, based on the actually measured forces from the laboratory rock cutting tests with a single pick, a comparison study is carried out against the standard finite element method (FEM). It can be concluded that ES-FEM has a higher convergence in energy norm and better accuracy than FEM using the same mesh from the comparison results. The 3D ES-FEM model solves the problem of the lower solution accuracy, caused by the poor quality of mesh, by using the standard FEM in solving the stress distribution of mining machinery parts, such as picks, and offers accurate and reliable solutions that are critical for improving the wear resistance of the pick for the mining industry.

FORCE DISTRIBUTIONS AND STRESS ANALYSIS OF THE INTOR-CH SUPERCONDUCTING COIL

1984 ◽  
Vol 45 (C1) ◽  
pp. C1-901-C1-904 ◽  
Author(s):  
C. Marinucci ◽  
L. Palladino ◽  
G. Pasotti ◽  
M. V. Ricci ◽  
G. Vécsey
Keyword(s):  
Stress Analysis ◽  
Superconducting Coil
Sign in / Sign up

Export Citation Format

Share Document