USER-ORIENTED OPTIMIZATION OF THE GUI OF A FINITE ELEMENT PROGRAMME TO ENHANCE THE USABILITY OF SIMULATION TOOLS

2018 ◽  
Author(s):  
Christian Dinkel ◽  
Daniel Billenstein ◽  
Daniel Goller ◽  
Frank Rieg
Keyword(s):  
Finite Element ◽  
Simulation Tools

scholarly journals Pantograph catenary dynamic optimisation based on advanced multibody and finite element co-simulation tools

2014 ◽  
Vol 52 (sup1) ◽  
pp. 338-354 ◽  
Author(s):  
Jean-Pierre Massat ◽  
Christophe Laurent ◽  
Jean-Philippe Bianchi ◽  
Etienne Balmès
Keyword(s):  
Finite Element ◽  
Dynamic Optimisation ◽  
Simulation Tools

A Non-Through Silicon Via 1000+ IO Package On Package Solution For Wide IO Applications

2013 ◽  
Vol 2013 (1) ◽  
pp. 000094-000099 ◽  
Author(s):  
Laura Mirkarimi ◽  
Rajesh Katkar ◽  
Ron Zhang ◽  
Rey Co ◽  
Zhijun Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Optimization ◽  
High Yield ◽  
Element Analysis ◽  
Package Design ◽  
Simulation Methodology ◽  
Structural Modifications ◽  
Simulation Tools ◽  
Large Bandwidth

We are developing a new solution for wide I/O package on package applications, which is Bond Via Array (BVA) technology. The prototype vehicle built in this study has 1020 I/O's at a pitch of 0.24 mm with a high aspect ratio of approximately 10:1 and is ≤1.4 mm tall. PoP applications require large bandwidth and thinner packages challenging package developers to address warpage control for high yield processes. The design optimization of this package was established through rigorous finite element analysis of materials selection and structural modifications. The simulation methodology was validated by measuring the warpage as a function of temperature for the experimental prototypes. The details for the simulation and verification processes for the wide I/O process will be discussed. The variation between finite element analysis predictions and the experimental builds was ~10%, which allowed us to complete package design optimization with our simulation tools. The prototype build includes a standard and a low CTE substrate.

Construction of a Code Verification Matrix for Heat Conduction With Finite Element Code Applications

2020 ◽  
Vol 5 (4) ◽  
Author(s):  
Aysenur Toptan ◽  
Nathan W. Porter ◽  
Jason D. Hales ◽  
Benjamin W. Spencer ◽  
Martin Pilch ◽  
...  
Keyword(s):  
Finite Element ◽  
Heat Conduction ◽  
Analytic Solution ◽  
Analytic Solutions ◽  
Simulation Tool ◽  
Code Verification ◽  
Simulation Tools ◽  
Steady State Heat ◽  
The One ◽  
Selection Of

Abstract When establishing the pedigree of a simulation tool, code verification is used to ensure that the implemented numerical algorithm is a faithful representation of its underlying mathematical model. During this process, numerical results on various meshes are systematically compared to a reference analytic solution. The selection of analytic solutions can be a laborious process, as it is difficult to establish adequate code confidence without performing redundant work. Here, we address this issue by applying a physics-based process that establishes a set of reference problems. In this process, code simulation options are categorized and systematically tested, which ensures that gaps in testing are easily identified and addressed. The resulting problems are primarily intended for code verification analysis but may also be useful for comparison to other simulation codes, troubleshooting activities, or training exercises. The process is used to select fifteen code verification problems relevant for the one-dimensional steady-state heat conduction equation. These problems are applicable to a wide variety of simulation tools, but, in this work, a demonstration is performed using the finite element-based nuclear fuel performance code BISON. Convergence to the analytic solution at the theoretical rate is quantified for a selection of the problems, which establishes a baseline pedigree for the code. Not only can this standard set of conduction solutions be used for verification of other codes, but also the physics-based process for selecting problems can be utilized to quantify and expand testing for any simulation tool.

scholarly journals Voltage Sources in 2D Fourier-Based Analytical Models of Electric Machines

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Bert Hannon ◽  
Peter Sergeant ◽  
Luc Dupré
Keyword(s):  
Finite Element ◽  
Great Majority ◽  
Element Model ◽  
Electric Machines ◽  
Analytical Models ◽  
Voltage Source ◽  
Pulse Width Modulated ◽  
Simulation Tools ◽  
Drive Trains ◽  
Terminal Voltage

The importance of extensive optimizations during the design of electric machines entails a need for fast and accurate simulation tools. For that reason, Fourier-based analytical models have gained a lot of popularity. The problem, however, is that these models typically require a current density as input. This is in contrast with the fact that the great majority of modern drive trains are powered with the help of a pulse-width modulated voltage-source inverter. To overcome that mismatch, this paper presents a coupling of classical Fourier-based models with the equation for the terminal voltage of an electric machine, a technique that is well known in finite-element modeling but has not yet been translated to Fourier-based analytical models. Both a very general discussion of the technique and a specific example are discussed. The presented work is validated with the help of a finite-element model. A very good accuracy is obtained.

Shape Memory Alloys: Material Modeling and Device Finite Element Simulations

2008 ◽  
Vol 583 ◽  
pp. 257-275 ◽  
Author(s):  
Ferdinando Auricchio ◽  
Alessandro Reali
Keyword(s):  
Finite Element ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Biomedical Engineering ◽  
Three Dimensional ◽  
Material Modeling ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Simulation Tools ◽  
Numerical Studies

The use of shape memory alloys (SMA) in an increasing number of applications in many ¯elds of engineering, such as biomedical engineering, is leading to a growing interest toward an exhaustive modeling of their macroscopic behavior in order to construct reliable simulation tools for SMA devices. In this paper we review a robust three-dimensional model able to reproduce both pseudo-elastic and shape-memory behaviors and we report numerical studies where it is used for the simulation of SMA-based biomedical devices.

Hydroforming Developments: Insights of other Researchers

2011 ◽  
Vol 110-116 ◽  
pp. 1748-1752 ◽  
Author(s):  
E. Pavithra ◽  
Ke Zhu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Strength ◽  
Light Weight ◽  
Sufficient Data ◽  
Element Analysis ◽  
Simulation Tools ◽  
Failure Cost ◽  
Cost Of Materials ◽  
The Way

Hydroforming is one of the forming technique which paves the way for the easy production of light weight and high strength automotive and aerospace components. The different approaches presented by the various authors in the field of hydroforming and its applications are reviewed in this paper. The authors have used Finite Element Analysis using different simulation tools like Abaqus, Ansys, LS-Dyna and Autoform 3D that help to minimize the failure cost of materials and dies. This paper deals with those disparate approaches, discussing exhaustively the process and application of hydroforming, providing sufficient data to make readers identify the burgeoning areas of research.

Modeling the closing behavior of a smart hydrogel micro-valve

2017 ◽  
Vol 30 (9) ◽  
pp. 1409-1418 ◽  
Author(s):  
Philipp J Mehner ◽  
Merle Allerdißen ◽  
Sebastian Haefner ◽  
Andreas Voigt ◽  
Uwe Marschner ◽  
...  
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Chemical Concentration ◽  
Simulation Tools ◽  
Smart Hydrogel ◽  
Fluid Systems ◽  
Circuit Representation ◽  
Essential Components ◽  
Network Methods ◽  
Replication Domain

Smart hydrogel micro-valves are essential components of micro-chemo-mechanical fluid systems. These valves are based on phase-changeable polymers. They can open and close micro-fluidic channels depending on the chemical concentration or the temperature in the fluid. A concept of finite element–based modeling in combination with network methods to simulate concentration-triggered, phase-changeable hydrogels is proposed. We introduce a temperature domain as a replication domain to substitute insufficiently implemented domains. With the used simulation tools, problems are highlighted and their solutions are presented. The computed parameters of such valves are included in a circuit representation, which is capable of efficiently computing large-scale micro-fluidic systems. These methods will help predict, visualize, and understand polymeric swelling behavior as well as the performance of large-scale chip applications before any complex experiment is performed.

Offshore pipelines and ice gouge geohazards: comparative performance assessment of decoupled structural and coupled continuum models

2016 ◽  
Vol 53 (11) ◽  
pp. 1866-1881 ◽  
Author(s):  
Kenton Pike ◽  
Shawn Kenny
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Finite Element Modelling ◽  
Physical Modelling ◽  
Parameter Analysis ◽  
Comparative Performance ◽  
Offshore Pipelines ◽  
Element Modelling ◽  
Simulation Tools ◽  
Reference Framework

Offshore pipelines in ice environments may be subjected to unique geohazards such as seabed ice gouging. These events involve nonlinear processes including large deformations and strains, contact mechanics, and failure mechanisms. Current pipeline engineering design practice employs decoupled, structural finite element modelling procedures to assess system demand and capacity. The inherent error and uncertainty within this approach drives conservative engineered solutions. Physical modelling and continuum numerical simulation tools complement this engineering framework to improve confidence in predicted outcomes. The relative performance of engineering models, used in current practice, and numerical simulation tools, including structural and continuum finite element modelling procedures, to predict the deformation and strain response of a buried pipeline subjected to an ice gouge event is examined. Refinements to the numerical modeling procedures and establishment of a consistent and compatible reference framework for the performance evaluation differentiate this study from others, which are subsets of the current investigation. For the parameter analysis conducted, within an equivalent reference framework, the outcomes demonstrate key factors, including superposition error and directional load decoupling, that influence model error that may not be as significant as previously considered. The scope and extent of this outcome is not fully understood and requires further investigations to delineate the significance across a wider parameter range.

scholarly journals A Novel Framework on Abdominal Aortic Aneurysm Analysis Based on Biomedical Simulation Tools

2019 ◽  
Vol 8 (3) ◽  
pp. 2300-2309
Keyword(s):  
Finite Element ◽  
Abdominal Aortic Aneurysm ◽  
Aortic Aneurysm ◽  
Extensive Study ◽  
Modeling And Analysis ◽  
Simulation Tools ◽  
Abdominal Aortic ◽  
Segmentation Analysis ◽  
Risk Of Rupture ◽  
Complete Study

Nowadays, the mortality rate due to cardiovascular diseases is significant due to noticed critical aneurysm cases. Abnormal swelling at the aorta causes Abdominal Aortic Aneurysm (AAA). They are usually saccular, fusiform according to their shape statistics. Hence it’s better to analyze, segment and model them to aid physicians/surgeons in various aspects of nonsurgical and surgical treatments. Morphological study provides approximate dimensions and risk of rupture. The objective of this work is to provide an extensive study on AAA segmentation, modeling and analysis with individual frameworks in sequence using tools like MATrix LABoratory (MATLAB), Materialise's Interactive Medical Image Control System (MIMICS), 3-matic and Finite Element Biomechanics (FEBio). The ultimate goal is to develop a 3D printed aneurysm replica for further evaluation and analysis using Ultimaker Cura Slicer Software. MATLAB is used to segment the Aorta irrespective of intensity/contrast inhomogeneities using Solidity feature. MIMICS software is used for modeling the aneurysms using three types of Axial, Coronal, and Saggital views. 3-matic provides an easy interface to do the dimensional analysis using imported aneurysm morphology. FEBio with PreView, PostView plugins is a nonlinear finite element solver which offers a chance to study it and to predict the future regions of rupture to some extent via Computational Fluid Dynamics (CFD) features. 3D printing of aneurysm offers the flexibility of knowing their epithelial characteristics and hands-on experience. The main merit of this novel and efficient framework is non-invasive studies of Aneurysm Segmentation, Analysis, and Modeling using five tools which addresses the complete study of AAA.

Physical Modelling of 4H-SiC PiN Diodes

2012 ◽  
Vol 717-720 ◽  
pp. 993-996 ◽  
Author(s):  
Craig A. Fisher ◽  
Michael R. Jennings ◽  
Angus T. Bryant ◽  
Amador Pérez-Tomás ◽  
Peter M. Gammon ◽  
...  
Keyword(s):  
Finite Element ◽  
Thermal Model ◽  
Physical Modelling ◽  
Pin Diode ◽  
Pin Diodes ◽  
Power Circuit ◽  
Simulation Tools ◽  
Device Optimization ◽  
Technological Advances ◽  
Rapid Prediction

With the recent technological advances in 4H-SiC PiN diode fabrication, simulation tools which enable the accurate and rapid prediction of losses of such devices in power electronics circuits will be increasingly sought-after. To this end, a physical electro-thermal model of the 4H-SiC PiN diode has been developed, which facilitates device optimization for power circuit applications. The performance of this model has been compared with both finite element simulations and experimental results; good matching for both switching and conduction characteristics has been observed.

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