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检索条件"任意字段=Digital Human Modeling for Design and Engineering Conference and Exposition"

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Characterizing Dynamics of Additively Manufactured Parts 37th

Characterizing Dynamics of Additively Manufactured Parts

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37th International Modal Analysis conference and exposition (IMAC) on Structural Dynamics

作者： Adkins, Gary Little, Clayton Meyerhofer, Peter Flynn, Garrison Hammond, Kyle Iowa State Univ Coll Engn Mech Engn Ames IA USA Rice Univ Mech Engn Coll Engn Houston TX USA Case Western Reserve Univ Dept Mech & Aerosp Engn Cleveland OH 44106 USA Los Alamos Natl Lab Los Alamos NM 87545 USA

ISBN: (纸本)9783030126841;9783030126834

Additive manufacturing (AM) presents engineers and manufacturers with unprecedented design freedom compared to conventional manufacturing techniques. This freedom comes with its own challenges. The wide variety of AM techniques, machines, and design geometries introduces difficulties in building consistent parts with known material properties. Of particular interest is the anisotropic nature introduced in the AM process. While AM is being adopted for applications in a variety of industries, the uncertainties introduced in manufacturing are slowing its implementation for critical parts such as structural members and jointed elements. As part of the ongoing effort to alleviate these issues, this paper aims to quantify the dynamic response of AM parts built using a variety of build orientations and internal structures. Multiple parts with theoretically identical external geometries are excited by a shake table while high-speed data are collected using digital image correlation (DIC). A finite element model is developed and calibrated using the DIC data to characterize the material property changes due to selection of build orientation and internal structures.

关键词： digital image correlation Finite element model Fused deposition modeling Lattice structure Modal analysis

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Enabling the digital Thread for Product Aware human and Robot Collaboration - An Agent-oriented System Architecture

Enabling the Digital Thread for Product Aware Human and Robo...

引用

International conference on Advanced Robotics (ICAR)

作者： Joe David Andrei Lobov Eeva Järvenpää Minna Lanz Faculty of Engineering and Natural Sciences Tampere University Tampere Finland Faculty of Engineering Norwegian University of Science and Technology Gløshaugen Norway

ISBN: (纸本)9781665436854

Customized product requirements are driving the need for variety oriented assemblies even in collaborative environments between humans and robots. This calls for the need for robots and humans to be intelligent in order to be aware of and adapt to different product needs. To address this, this study presents a novel approach and architecture to realize a digital thread that allows human and robot agents access to the product model at system run-time. The approach entails modelling a knowledge-based engineering (KBE) software as an agent which actively participates with collaborative agents via communication mechanisms standardized by the IEEE Computer Society. The architecture is described by four concurrent views and is discussed for its advantages and design rationale.

关键词： Adaptation models Instruction sets Computational modeling Collaboration Systems architecture Computer architecture Web servers

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design and Development of Deep Learning Approach for Dental Implant Planning

Design and Development of Deep Learning Approach for Dental ...

引用

Green Energy, Computing and Sustainable Technology (GECOST), International conference on

作者： Rushikesh Bodhe Saaveethya Sivakumar Ayush Raghuwanshi Department of Information Technology S. B. Jain Institute of Technology Management and Research Nagpur India Department of Electrical and Computer Engineering Curtin University Miri Sarawak Malaysia

ISBN: (纸本)9781665486644

Over the past two decades, the area of artificial intelligence (AI) has developed and grown remarkably. Recent advancements in machine learning, digital data collecting, and computer infrastructure have allowed AI applications to spread into fields traditionally regarded as the domain of human expertise. AI has enormous potential to alter the healthcare industry and enhance patient care when used in medicine and dentistry. AI is being researched in dentistry for a number of objectives, including the precise identification of healthy and unhealthy structures, disease detection, and treatment result prediction. In this research, we develop an approach for emphasizing its assistive and supplementary role for medical professionals in implant planning and maxillofacial surgery. We plan a dental implant operation by developing an AI-based system for detecting implant type and position, the exact location of the mandibular canal, a canal located on both sides of the lower jaw that contains the alveolar nerve, and the total number of missing teeth precisely enough to implement the correct methodology for operating over missing teeth.

关键词： Irrigation Computational modeling Surgery Implants Teeth Feature extraction Planning

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NSF S-STEM project update: A pathway to completion for pursuing engineering and engineering technology degrees

NSF S-STEM project update: A pathway to completion for pursu...

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2020 ASEE Virtual Annual conference, ASEE 2020

作者： Bullington, Kim Tomovic, Cynthia Jovanovic, Vukica M. Dean, Anthony W. Landaeta, Rafael Old Dominion University United States

This poster showcases the progress of students who are receiving scholarships from the National Science Foundation S-STEM project: A Pathway to Completion for Pursuing engineering and engineering Technology Degrees. Thus far, 20 academically high-achieving students who demonstrate financial need have participated in the project. Thirty-six scholarships have been awarded to date, in which a maximum of twelve scholarships are awarded per semester;some students have received scholarships multiple times. Students are from electrical engineering, computer engineering, mechanical engineering, civil engineering, civil engineering technology, and modeling and simulation majors. As part of this S-STEM project, students also receive academic support, mentorship related to the development of professional workforce skills, career search skills, and opportunities to participate in industry-related field trips. Role models, many of whom are practicing engineers with STEM degrees and are military veterans, serve as presenters and share their personal career pathways and answer students' questions in the required one-hour weekly seminar. Although the students participating in this project meet the strenuous academic criteria set by the project (3.0/4.0), many of the students struggle financially, due to having expended their G.I. benefits, which can impede their academic performance and graduation. While many student success programs focus on freshman and sophomore students, what makes this project unique is its focus on enabling student success at the junior and senior years. This project provides a portfolio of different activities for the more mature student, e.g. financial aid through scholarships, community-based learning opportunities, and academic success strategies that enable stronger retention and student completion rates. Project activities are tailored to veterans and adult learners as this group of students is particularly vulnerable given their need to simultaneously

关键词： Students

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An approach to creating a simple digital twin for optimizing a small electric concept vehicle drivetrain 34

An approach to creating a simple digital twin for optimizing...

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34th International ECMS conference on Modelling and Simulation, ECMS 2020

作者： Dóka, Tamás Horák, Péter Department of Machine and Product Design Faculty of Mechanical Engineering Budapest University of Technology and Economics 1111 Muegyetem rkp. 3 Budapest Hungary

ISBN: (纸本)9783937436685

Since modeling and simulation are integral tools in engineering, the question is not if they should be used in a design process, but rather how they should be used to deliver the best solutions. The objective of this paper is to outline an approach to creating a simple digital Twin for a small electric vehicle drivetrain utilizing only parametric 3D CAD models, widely used simulation tools and some programming libraries. First, the concept of the digital Twin, its benefits, then the possibilities of using Generative design are briefly introduced, afterwards electric vehicles’ advantages are reviewed. In an example project the properties and opportunities of the 3D CAD- and simulation models are demonstrated. Finally, future improvements and automated optimization opportunities are discussed. © ECMS Mike Steglich, Christian Mueller, Gaby Neumann, Mathias Walther.

关键词： Electric vehicles

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Study of MRI Compatible Piezoelectric Motors by Finite Element modeling and High-Speed digital Holography

Study of MRI Compatible Piezoelectric Motors by Finite Eleme...

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Society-for-Experimental-Mechanics (SEM) Annual conference and exposition on Experimental and Applied Mechanics

作者： Carvalho, Paulo A. Tang, Haimi Razavi, Payam Pooladvand, Koohyar Castro, Westly C. Gandomi, Katie Y. Zhao, Zhanyue Nycz, Christopher J. Furlong, Cosme Fischer, Gregory S. Worcester Polytech Inst Robot Engn Program Worcester MA 01609 USA Worcester Polytech Inst Dept Mech Engn Worcester MA 01609 USA

ISBN: (纸本)9783030300098;9783030300081

The use of intra-operative images with a magnetic resonance imager (MRI) can enable more precise surgical procedures when treating deep brain tumors. The constrained space inside the imager creates the need for robotic assistive devices. However, the strong static magnetic fields, fast changing magnetic gradients and sensitivity to electrical noise create challenges that can be partly addressed by a novel class of MRI compatible resonant piezoelectric motors to actuate the robots. These motors consist of a stator that is mechanically excited by a bonded piezoelectric ring and a frictionally coupled rotor. Steady-state excitation at certain frequencies leads to specific mode shapes with surface waves having both in- and out-of-plane displacement components. The interaction between the surface waves of the stator with the rotor results in the rotor spinning. Optimal operation of these motors depends on the stator's mode shapes generating waves that result in maximizing torquing of the rotor while reducing tangential force components. We present a finite element multi-physics model of the stator using COMSOL in frequency and time-domain. We combine the FEM with stroboscopic and time averaged, high-speed digital holography to create a validated model useful for optimizing motor design and performance. The methodology is used in the study of 30 mm diameter 40-60 kHz driven motor that have been demonstrated in an in-bore MRI compatible surgical robot.

关键词： Finite element modeling Holographic measurements MRI compatible actuation Image guided surgery Resonant piezoelectric motor

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Foundations of a computational science of game design: Abstractions and tradeoffs 16

Foundations of a computational science of game design: Abstr...

引用

16th AAAI conference on Artificial Intelligence and Interactive digital Entertainment, AIIDE 2020

作者： Cardona-Rivera, Rogelio E. Laboratory for Quantitative Experience Design School of Computing and the Entertainment Arts and Engineering Program University of Utah Salt Lake CityUT United States

ISBN: (纸本)9781577358497

This paper presents the foundations of a computational science of game design—a model of abstraction: the outcome of a situated design process that conceptualizes something in terms of something else for a specific purpose. The outcome of abstraction is modeled via an abstraction scheme, a step toward modeling the process of game design abstraction from a human-centered perspective. A scheme’s purpose is couched relative to a scheme’s properties, also defined herein;collectively, the properties represent the space of tradeoffs designers must navigate for engineering virtual worlds. This model’s analytical traction is evidenced by applying it to the design of pathfinding, a core behavior in artificial intelligence for games. More broadly, it is a foundation for shared progress because it affords directly comparing particular abstractions of concepts and phenomena across the gamut of research on intelligent systems in entertainment. Copyright © 2020, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Game design

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A Comparison Between Virtual Reality and digital human modeling for Proactive Ergonomic design 10th

A Comparison Between Virtual Reality and Digital Human Model...

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10th International conference on digital human modeling and Applications in Health, Safety, Ergonomics and Risk Management (DHM) Held as Part of the 21st International conference on human-Computer Interaction (HCII)

作者： Ahmed, Salman Irshad, Lukman Demirel, H. Onan Tumer, Irem Y. Oregon State Univ Corvallis OR 97331 USA

ISBN: (纸本)9783030222154;9783030222161

Proactive ergonomics can improve the overall performance and well-being of the user and has the potential to improve the product quality and reduce the cost of resources. Application of digital human modeling (DHM) is a pathway for proactive ergonomics. However, DHM has the issue of fidelity and it is yet not in the level of simulating human perceptions and emotions accurately. In this study, we have proposed an ergonomics approach that is used to infuse human factor engineering (HFE) guidelines during the early design process. The approach utilizes Virtual Reality (VR), Computer Aided design (CAD) objects, and human-subjects to proactively filter design ideas, during the conceptualization phase, before functional prototypes are built. A comparative study between full computational prototyping and mixed prototype using VR is performed by (a) designing cockpit packaging and (b) assessing human performance during a fire in cockpit emergency situation. It is found that the cockpit design based on the two prototyping strategies provide similar outcomes. However, the computational prototyping approach is more suitable in design space exploration and the mixed prototyping is more relevant for communicating design ideas. Further, it is found that the computational prototyping approach cannot simulate the change in human performance due to emergency whereas the mixed prototype is able to simulate the change in human performance due to the emergency situations.

关键词： Proactive ergonomics human factor digital human modeling Virtual Reality design Prototyping Cockpit Emergency

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Analysis of the working posture of a certain type of command module based on JACK

Analysis of the working posture of a certain type of command...

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Intelligent design (ICID), International conference on

作者： Sheng Su Xuan Fu Zhiqiang Song Po Hu Ping Liu Sen Gu School of Design Art and Media Xi'an Technological University Xi'an China Art School Xi’an FANYI University Xi'an China School of Design and Art Shaanxi University of Science and Technology Xi'an China School of Intelligent Engineering Henan Mechanical and Electrical Vocational College Zhengzhou China

ISBN: (纸本)9781665406031

In order to verify the force, vision and daily energy consumption of the operator in a certain type of command cabin, this paper uses Siemens tecnomatix Jack human-computer simulation software and 3D design software to build a human-computer simulation environment of a certain type of command cabin 2873-1997) standard to establish P5, P50, P95 Chinese adult male digital human models for related simulation analysis; using the visual field of Jack software in the human performance analysis module to analyze the visual field and color recognition angle of a certain type of command cabin operator; using the metabolism module to analyze the daily basic metabolism of the operator; using the force module of the back part to analyze, Through the analysis of human, machine and environment, the simulation experiment provides a theoretical basis for the effectiveness of a certain type of command cabin design, and provides optimization suggestions for the comfort and efficiency of the working seat and display console of the command cabin.

关键词： Analytical models Solid modeling Visualization Energy consumption Three-dimensional displays Force Aerospace electronics

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BYOE: design and development of simple robotic arm

BYOE: Design and development of simple robotic arm

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2020 ASEE Virtual Annual conference, ASEE 2020

作者： Basith, Iftekhar Ibne Marroquin, Brandon Department of Engineering Technology Sam Houston State University HuntsvilleTX United States Sam Houston State University United States

In today's world there is an increasing need to create artificial arms where human interaction is difficult or impossible. In this paper we describe the implementation of a simple robotic arm capable of moving and lift some objects. The development of this arm is based on the Arduino UNO. The servos act as joints of the robotic arm which are controlled by corresponding potentiometer. We have used low torque servos here due to budget constraint and proof of concept;however more powerful servos can be integrated to pick heavy object. This particular robotic arm was designed with four degrees of freedom and programmed to accurately accomplish simple and light material lifting task as in the production line in any industry. However, it can be used as pharmacy-based drug-giving robots;in the medical sector and in automation systems. The generation of the human-like manipulation motions has been implemented and also tested successfully for the 4 degrees of freedom (DOF) arm of the humanoid robot. The presented approach does not consider the dynamics of the robot arm. This would be necessary to generate realistic velocity distribution for the manipulation motions. The implemented prototype has the ability to move in 4 axis directions with 4 servo motors. The voltage across variable resistors is not completely linear rather a noisy one. Capacitors are used across each resistor to filter out this noise, as shown in figure 1. This voltage represents the control position and is fed into four ADC channels of Arduino to get corresponding digital values. The Arduino UNO ADC has a resolution of 10 bit, means it maps input voltages between 0 and 5V into digital values between 0 and 1023;in other words, 4.9mV per unit. This project is very helpful for beginners who want to make a robotic arm with low cost. © American Society for engineering Education 2020.

关键词： Robotic arms

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