Stochastic Finite Element Method (FEM) and Design of Experiments for Pressure Vessel and Piping (PVP) Decision Making

2006 ◽  
Author(s):  
Jeffrey T. Fong ◽  
James J. Filliben ◽  
Roland deWit ◽  
Barry Bernstein
Keyword(s):  
Finite Element Method ◽  
Decision Making ◽  
Finite Element ◽  
Design Of Experiments ◽  
Single Crystal Silicon ◽  
Quantitative Measure ◽  
Crystal Silicon ◽  
Stochastic Fem ◽  
Anisotropic Elastic ◽  
Element Method

Using an example from a recent study of the finite element method (FEM) solutions of the natural frequencies of single-crystal silicon cantilevers in atomic force microscopy (AFM), we present the results of an analysis using two powerful tools of engineering statistics, namely, (a) stochastic FEM, and (b) design of experiments. The analysis of the FEM results using ABAQUS, ANSYS, and LS-DYNA anisotropic elastic element types yields conclusions that engineers can use to justify decisions with quantitative measure of uncertainties. For PVP engineers, we show with an example that this methodology is equally applicable to their decision making process and the appropriate risk assessment.

Simulating the Fracture Wave Field Characteristics Using Finite Element Method of the Anisotropic Elastic Wave

2011 ◽  
Vol 109 ◽  
pp. 244-247
Author(s):  
De Yi Yang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Elastic Wave ◽  
Wave Field ◽  
Model Theory ◽  
Fracture Detection ◽  
Important Sense ◽  
Anisotropic Elastic ◽  
Element Method

This paper introduced the Liner slip deformation (LSD) fracture media model theory, and this theory is applied into the two component numerical simulation in HTI(LSD) media using the finite element method of the anisotropic elastic wave. By means of the numerical simulation paper revealed the wave field characteristics of the fracture parameters. The conclusion has an important sense for the application of the LSD fracture media model theory in the field of fracture detection and detection of fracture containing fluid.

scholarly journals Design and Analysis of The Energy Storage and Return (ESAR) Foot Prosthesis Using Finite Element Method

2022 ◽  
Vol 1 (2) ◽  
pp. 59-64
Author(s):  
Alfiana Fitri Istiqomah ◽  
Rifky Ismail ◽  
Deni Fajar Fitriyana ◽  
Sulistyo Sulistyo ◽  
Akmal Putra Fardinansyah ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Decision Making ◽  
Finite Element ◽  
Energy Storage ◽  
Gait Cycle ◽  
Metabolic Energy ◽  
Von Mises Stress ◽  
Heel Strike ◽  
Abnormal Gait ◽  
Element Method

ABSTRACT. Disability issue has increased in recent years due to the high number of accidents and vascular disease. Loss of limb function for people with amputations often results in an abnormal gait. Energy Storage And Return (ESAR) foot prostheses provide an alternative to help improve gait and minimize metabolic energy expenditure during the walking phase of amputees. This study used 3 designs with models from the Catia V5 Software. The finite element method analysis used Ansys Workbench 18.1 software to evaluate the three designs with a loading of 1.2 times the user's body weight with a maximum weight of 70 kg in normal walking activities. The simulated material is carbon fiber prepreg which has tensile strength, Young's modulus, Poisson ratio, and density of 513.72 MPa, 77.71 GPa, 0.14, and 1.37 g/cm3. The decision-making matrix method is used to determine the best foot prosthesis design according to predetermined criteria. The highest value in the decision-making matrix is 76 in Design 3. The chosen design (Design 3) after gait cycle analysis has a maximum von Mises stress value of 76.956 MPa and the safety factor value for each gait cycle heel strike loading model is 1.0762; foot flat 3.2509; toe-off 6.6263.

scholarly journals Modal Analysis of Anisotropic Elastic Body Like Woven Fabrics Using Finite Element Method.

1998 ◽  
Vol 54 (2) ◽  
pp. 108-114 ◽  
Author(s):  
Takao Furukawa ◽  
Tomofumi Okamoto ◽  
Yoshio Shimizu ◽  
Kazuya Sasaki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Modal Analysis ◽  
Elastic Body ◽  
Woven Fabrics ◽  
Anisotropic Elastic ◽  
Element Method

scholarly journals Development of a New Self-flaring Rivet Geometry Using Finite Element Method and Design of Experiments

2020 ◽  
Vol 47 ◽  
pp. 383-388 ◽  
Author(s):  
Christian Kraus ◽  
Tobias Falk ◽  
Reinhard Mauermann ◽  
Welf-Guntram Drossel
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Design Of Experiments ◽  
Element Method

Modeling and Optimization of an Elliptical Shape Ultrasonic Motor Using Combination of Finite Element Method and Design of Experiments

2010 ◽  
Author(s):  
Hamed Sanikhani ◽  
Javad Akbari ◽  
Ali Reza Shahidi ◽  
Ali Akbar Darki
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Design Of Experiments ◽  
Optimization Algorithm ◽  
Complex Structure ◽  
Optimization Method ◽  
Positioning Systems ◽  
Ultrasonic Motors ◽  
Element Method

Standing-wave ultrasonic motors are a modern class of positioning systems, which are used to deliver a high precision linear or rotary motion with an unlimited stroke. The design process should be performed through an effective optimization algorithm in order to guaranty proper and efficient function of these motors. An optimization method of ultrasonic motors is proposed based on the combination of finite element method and factorial design as a design of experiments in this study. The results show the ability of this method in optimal design of ultrasonic motors especially those which have a complex structure and multi modes operation principle.

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