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Prathap Valale Prasannakumar > Speaker>  Dassault Systèmes
Dr. Prathap Valale PRASANNAKUMAR
Antenna Engineer - Meta
Prathap Valale Prasannakumar > Speaker>  Dassault Systèmes
Dr. Prathap Valale PRASANNAKUMAR
Antenna Engineer - Meta

Biography: 

Prathap Valale PRASANNAKUMAR is an antenna engineer in the Reality Labs at Meta Platforms, Inc. He has worked on Oculus Quest 2 VR devices. His current research is focused on Wi-Fi (2.4 GHz, 5 GHz, and 6 GHz), Bluetooth, and UWB antennas and improving the isolation between collocated antennas in AR/VR consumer electronics devices. His Ph.D. thesis focuses on the design of monostatic, quasi-monostatic, and bistatic simultaneous transmit and receive (STAR) or In-Band Full-Duplex (IBFD) antenna systems and wideband isolation enhancement techniques. He has over 7.5 years of experience in numerical EM simulations – Method of Moments (MoM), Finite Element (FEM), Time-domain (FIT), hybrid solvers, and other 2D and 2.5D solvers. Dr. Prathap received his MS and Ph.D. degrees in electrical engineering from the University of Colorado, Boulder. Previously he has worked as a deputy engineer in Bharat Electronics, India.

Title:

Designing Virtual Reality Antennas using CST Bio-Modeling

Abstract:

The following presentation demonstrates the role of Computational Electromagnetic (CEM) in consumer electronics design, specifically AR/VR. Simulation of these devices during the initial exploration stages is crucial to understanding the pros and cons of antenna locations and their proximity to various sub-systems. The desired polarization and radiation patterns envelope are key deciding parameters, along with S11 and isolation. Hence, these simulated data with and without human phantom are beneficial for architecture reviews when the prototype and field data are unavailable and (or) hard to collect. This presentation demonstrates the role of virtual human phantoms and the various challenges affecting antenna performance based on antenna placement, body positioning, multi-antenna coupling, and operating environment in the Wi-Fi frequency band. We will also highlight the process of obtaining accurate and efficient simulation results by leveraging SIMULIA CST Studio Suite technology for AR/VR simulation needs.
 

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John Sanders > Speaker>  Dassault Systèmes
Dr. John SANDERS
Assistant Professor - California State University, Fullerton
John Sanders > Speaker>  Dassault Systèmes
Dr. John SANDERS
Assistant Professor - California State University, Fullerton

Biography: 

John SANDERS is currently an Assistant Professor of Mechanical Engineering at California State University, Fullerton. He received his Ph.D. in Theoretical and Applied Mechanics from the University of Illinois at Urbana-Champaign.

Title:

Quantifying Crack-tip Stress Concentrations in High-temperature Superalloys using Abaqus Unified FEA with a UMAT User-defined Material Subroutine

Abstract:

Next-generation nuclear reactors are currently being designed to operate at temperatures up to 1000 degrees centigrade. At such high temperatures, metals undergo a combination of elastic and creep deformation, and the primary failure mechanism for next-generation reactor components is expected to be creep rupture. Of particular interest to structural engineers designing such components is the magnitude of the stress concentration ahead of a crack tip in creeping metals - a classical problem in continuum fracture mechanics, but one that is impossible to treat analytically for all but the simplest material models. This talk will present recent finite element simulations of the crack-tip stress fields performed using the Abaqus Unified FEA product suite. To investigate the behavior of the stress concentration during the transition from the primary creep phase to the secondary creep phase, a unified creep-plasticity model developed by researchers at Oak Ridge National Laboratory, and calibrated to experimental data for two high-temperature superalloys, was implemented via a UMAT user-defined material subroutine. The simulations reveal not only the relevant loading parameters that characterize the crack-tip stress concentration, but also a dimensionless number quantifying the influence of primary creep on the crack-tip stress fields. These results promise to aid in the design of next-generation nuclear reactor components.
 

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Dinesh Panneerselvam > Speaker>  Dassault Systèmes
Dinesh PANNEERSELVAM
SIMULIA Industry Process Consultant Director - Dassault Systèmes
Dinesh Panneerselvam > Speaker>  Dassault Systèmes
Dinesh PANNEERSELVAM
SIMULIA Industry Process Consultant Director - Dassault Systèmes

Biography: 

Dinesh has over 17 years of professional experience in engineering analysis and simulation in High Tech, Aerospace and Medical devices industries. He is a Director, Industry Process Consultants at  Dassault Systèmes SIMULIA Cop focusing on technical sales and advanced simulation methods development. Dinesh received his MS and Ph. D in Engineering Mechanics from Case Western Reserve University. He graduated with a B. Tech in Civil Engineering from the Indian Institute of Technology Madras, India.

Title:

Semiconductors Packaging Performance and Reliability

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David Najera > Speaker>  Dassault Systèmes
David NAJERA
Project Engineer - ATA Engineering
David Najera > Speaker>  Dassault Systèmes
David NAJERA
Project Engineer - ATA Engineering

Biography: 

David NAJERA is a project engineer at ATA Engineering in San Diego. His work is focused on material characterization and nonlinear dynamics.

Title:

Integration of Abaqus with Open Source Tools for Material Characterization of Metallic Additively Manufactured Parts

Abstract:
Cost-effective and rapid implementation of additive manufacturing (AM) for complex parts in critical applications is currently impeded by a lack of predictive insights into the physics of AM processes and their impact on part performance and reliability. To address this challenge, a complete thermal mechanical-material modeling and simulation workflow was developed that uses automated data mapping and translation tools to integrate part-level print simulations, probabilistic grain growth models, and crystal plasticity homogenization techniques to efficiently predict metallic part residual stresses, net shape, and strength. Thermal-mechanical fields during printing are simulated using the finite element analysis code Abaqus. The as-printed grain microstructure is predicted from Abaqus thermal history results using the kinetic Monte Carlo code SPPARKS. The homogenized microstructural response is determined with the crystal plasticity spectral solver DAMASK. Dimensionality reduction is performed by employing a K-means algorithm to cluster regions of similar thermal histories in a part for spatially varying assignment of mechanical properties. Finally, process simulation insights (residual stresses, material properties) are embodied in a part-level Abaqus finite element model representing the as-built condition. This workflow has been demonstrated and partially validated via prediction of the tensile response of two sets of 316L cylindrical test coupons with varying printing paths and manufactured with a directed energy deposition process, which were presented in Yadollahi et al. [Materials Science and Engineering: A 664, 2015: 171–83]. The results show a path toward a foundational physics-based simulation toolset for part performance characterization that leverages state-of-the-art tools available to industry.
 

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Jaewon Kim > Speaker>  Dassault Systèmes
Dr. Jaewon KIM
Research Specialist - 3M
Jaewon Kim > Speaker>  Dassault Systèmes
Dr. Jaewon KIM
Research Specialist - 3M

Biography: 
Jaewon KIM received B.S. and M.S. degrees in Electronics Engineering from Korea University, South Korea, in 2001 and a Ph.D. degree in Electrical Engineering from the University of Minnesota, Minneapolis, MN, in 2008. Since 2008, his research area includes electromagnetics and metamaterials at 3M Corp. Research Lab in St. Paul, MN; current project is working on 5G/mmWave material developments. His publication at 3M includes 139 IS submissions and 45 patents filed.

Title:

3M 5G/mmWave Material Research: How to deal with reflection issues?

Abstract:

As the operation frequency increases for 5G/mmWave communication, new challenging issues becomes raised. As an RF engineer, I can see new challenges with 5G/mmWave applications. One of new challenges is the unwanted reflection from dielectric objects which start causing significant issues on the signal transmission because the thickness of dielectric objects and materials is getting close to the wavelength of the signal. The wavelength is about 10mm in air at 28GHz and the wavelength is about 3mm in air at 110GHz. We will discuss about these challenging problems and the solutions.
 

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Satheesh Kandasmay > Speaker>  Dassault Systèmes
Satheesh KANDASAMY
SIMULIA Home & Lifestyle and T&M Propulsion Industry Process Director - Dassault Systèmes
Satheesh Kandasmay > Speaker>  Dassault Systèmes
Satheesh KANDASAMY
SIMULIA Home & Lifestyle and T&M Propulsion Industry Process Director - Dassault Systèmes

Biography: 

Satheesh is an Industry Process Expert Director responsible for Home & Lifestyle and Transportation & Mobility Propulsion. He has 20 years of experience in vehicle development: thermal management and aerodynamics. He is currently responsible for deploying digital solutions for electric and conventional propulsion systems. He has strong experience in promoting PowerFLOW solutions with automotive OEM’s around the globe, including Nissan, Toyota, Tesla, General Motors, and Ford Motor Co. Satheesh has led the development of the Denso engine cooling module library in PowerFLOW. This tool was the first of its kind where it embedded a supplier’s intellectual property in a CAE tool. Satheesh is currently focusing on developing seamless, accurate, robust digital solutions for developing vehicle propulsion and battery systems powered by Dassault Systèmes’ cutting-edge Modeling and Simulation offerings. Satheesh has a graduate degree from Oklahoma State University, Stillwater, OK, and an undergraduate degree from the Indian Institute of Technology, Bombay, India.

Title:

Accelerate an Electric Drive Development Process through Connected Modeling and Simulation

Abstract:

An overview on Dassault Systèmes’ cutting edge offering to empower the design of electric drives. Electric drive development poses different challenges compared to the ones faced by the internal combustion engine. Electric machines are geometrically simpler, but their performance is impacted by multiphysics interactions. Dassault Systèmes’ offering for electric drive design is powered by a modular, parametric, customizable solution that connects design and engineering. It can be leveraged by experts and non-experts to design, evaluate and optimize the electric drives to meet today’s challenges such as the optimal use of rare earth material, consolidation of vehicle platforms and re-use of electric drives across vehicle model variants.
 

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Prashant Andrade > Speaker>  Dassault Systèmes
Prashant ANDRADE
Mechanical Simulation Engineer - Waymo
Prashant Andrade > Speaker>  Dassault Systèmes
Prashant ANDRADE
Mechanical Simulation Engineer - Waymo

Biography: 

Prashant ANDRADE is a Mechanical Simulation Engineer at Waymo since October 2018 where he works in the hardware team on the analysis and design of sensors used by the Waymo Driver. Prashant primarily deals with shock, vibration and nonlinear mechanics problems. Prior to Waymo, Prashant worked in the Special Projects and iPhone groups at Apple in Cupertino. Prashant has also worked at Dassault Systèmes both in Michigan and California in a variety of roles. Prashant received a Ph.D. from the University of Texas at Austin specializing in structural dynamics.

Title:

Response Spectra Methods

Abstract:

The presentation will survey response spectra techniques commonly used in the aerospace, automotive and other industries. It will start by discussing how simply looking at peak g values of an input loading signal is not the most meaningful way to evaluate the severity of the applied shock excitation. This will be followed by a discussion of the Shock Response Spectrum (SRS) and Vibration Response Spectrum (VRS) and how they are typically generated from input transient signals and Power Spectral Density functions (PSDs) respectively. Intuitive explanations of the SRS, PSDs and VRS will be provided with a minimum of mathematical treatment. Finally, ways of using the response spectra generated to help with preliminary design of structures subjected to mechanical shock and vibration loading will be explored.
 

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Mark Bohm > Speaker>  Dassault Systèmes
Mark BOHM
Senior Director, SIMULIA Worldwide Technical Sales - Dassault Systèmes
Mark Bohm > Speaker>  Dassault Systèmes
Mark BOHM
Senior Director, SIMULIA Worldwide Technical Sales - Dassault Systèmes

Biography:

Mark has been with SIMULIA for over 30 years.  Contributing in a variety of sales and technical management roles, he currently leads a global technical sales group supporting advanced applications. He has degrees in structural engineering from Brown University and the University of California, Berkeley.

Title:

SIMULIA Technology Updates & Highlights

Abstract: 

SIMULIA is a Simulation brand within Dassault Systèmes, the 3DEXPERIENCE company. We provide technology for simulation in each domain – covering Structures, Fluids, Electromagnetics, Multibody, Vibro-acoustics, and Automation & Optimization. This presentation offers a brief overview of these technologies and illustrates that you are using the same technology (per domain) whether you are a standalone product user or are a 3DEXPERIENCE platform user. We then highlight multidisciplinary and multiscale solutions of select industry processes and workflows. We also introduce a new unified licensing model that provides access to all solvers from the same license pool. The new model includes a cost-effective approach to encourage simulation-based design exploration. The presentation concludes with a peek into the remainder of the RUM agenda, including deep-dive sessions in each domain.

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Sandeep Kumar > Speaker>  Dassault Systèmes
Sandeep KUMAR
SIMULIA Industry Process Consultant Senior -  Dassault Systèmes