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682 full-text articles. Page 1 of 26.

Interacting With Grasped Objects In Expanded Haptic Workspaces Using The Bubble Technique, Ryan Andrew Pavlik, Judy M. Vance 2017 Iowa State University

Interacting With Grasped Objects In Expanded Haptic Workspaces Using The Bubble Technique, Ryan Andrew Pavlik, Judy M. Vance

Judy M. Vance

Haptic force-feedback can provide useful cues to users of virtual environments. Body-based haptic devices are portable but the more commonly used ground-based devices have workspaces that are limited by their physical grounding to a single base position and their operation as purely position-control devices. The “bubble technique” has recently been presented as one method of expanding a user's haptic workspace. The bubble technique is a hybrid position-rate control system in which a volume, or “bubble,” is defined entirely within the physical workspace of the haptic device. When the device's end effector is within this bubble, interaction is through ...


Spatial Mechanism Design In Virtual Reality With Networking, John N. Kihonge, Judy M. Vance, Pierre M. Larochelle 2017 Iowa State University

Spatial Mechanism Design In Virtual Reality With Networking, John N. Kihonge, Judy M. Vance, Pierre M. Larochelle

Judy M. Vance

Mechanisms are used in many devices to move a rigid body through a finite sequence of prescribed locations in space. The most commonly used mechanisms are four-bar planar mechanisms that move an object in one plane in space. Spatial mechanisms allow motion in three-dimensions (3D). Spatial 4C mechanisms are two degree of freedom kinematic closed-chains consisting of four rigid links simply connected in series by cylindrical (C) joints. A cylindrical joint is a two degree of freedom joint which allows translation along and rotation about a line in space. This paper describes a synthesis process for the design of 4C ...


Spherical Mechanism Synthesis In Virtual Reality, Todd J. Furlong, Judy M. Vance, Pierre M. Larochelle 2017 Iowa State University

Spherical Mechanism Synthesis In Virtual Reality, Todd J. Furlong, Judy M. Vance, Pierre M. Larochelle

Judy M. Vance

This paper presents a new approach to using virtual reality (VR) to design spherical mechanisms. VR provides a three dimensional design space where a designer can input design positions using a combination of hand gestures and motions and view the resultant mechanism in stereo using natural head movement to change the viewpoint. Because of the three dimensional nature of the design and verification of spherical mechanisms, VR is examined as a new design interface in this research. In addition to providing a VR environment for design, the research presented in this paper has focused on developing a “design in context ...


Applying Virtual Reality Techniques To Sensitivity-Based Structural Shape Design, Tsung-Pin Yeh, Judy M. Vance 2017 Iowa State University

Applying Virtual Reality Techniques To Sensitivity-Based Structural Shape Design, Tsung-Pin Yeh, Judy M. Vance

Judy M. Vance

Virtual reality (VR) provides a design space consisting of three-dimensional computer images where participants can interact with these images using natural human motions in real time. In the field of engineering design, prototyping and design verification have provided the initial application areas for VR. The research presented in this paper takes the scenario one step further by incorporating free-form deformation techniques and sensitivity analysis into the virtual world such that the designer can easily implement analysis-based shape design of a structural system where stress considerations are important. NURBSbased free-form deformation (NFFD) methods and direct manipulation techniques are used as the ...


Assessing The Effectiveness Of Traditional And Virtual Reality Interfaces In Spherical Mechanism Design, Paul T. Evans, Judy M. Vance, Veronica J. Dark 2017 Southwest Research Institute

Assessing The Effectiveness Of Traditional And Virtual Reality Interfaces In Spherical Mechanism Design, Paul T. Evans, Judy M. Vance, Veronica J. Dark

Judy M. Vance

Virtual reality (VR) interfaces have the potential to enhance the engineering design process, but before industry embraces them, the benefits must be understood and documented. The current research compared two software applications, one which uses a traditional human-computer interface (HCI) and one which uses a virtual reality HCI, that were developed to aid engineers in designing complex three-dimensional spherical mechanisms. Participants used each system to design a spherical mechanism and then evaluated the different interfaces. Participants rated their ability to interact with the computer images, their feelings about each interface, and their preferences for which interface device to use for ...


Rapid Development Of Natural User Interaction Using Kinect Sensors And Vrpn, Timothy B. Morgan, Diana Jarrell, Judy M. Vance 2017 Iowa State University

Rapid Development Of Natural User Interaction Using Kinect Sensors And Vrpn, Timothy B. Morgan, Diana Jarrell, Judy M. Vance

Judy M. Vance

The availability of low-cost natural user interaction (NUI) hardware took a significant step forward in 2010 with the introduction of the Microsoft Kinect. Despite significant work on the available software development kits for the Kinect, tasks beyond simple single-Kinect skeleton tracking remain challenging to implement. This paper introduces a software tool that significantly accelerates the prototyping and implementation of NUI in virtual reality, particularly for developers with limited programming skills. This is achieved by creating a graphical user interface to provide a consistent development environment for defining Kinect settings and voice commands. This is coupled with a server to transmit ...


Development Of An Excel® Rocket Simuator For Application In Middle School, High School, And University Stem Education, Melvin Lee Hortman 2017 Central Washington University

Development Of An Excel® Rocket Simuator For Application In Middle School, High School, And University Stem Education, Melvin Lee Hortman

All Master's Theses

Water rocket activities are one of the most popular STEM activities used in primary, secondary, and higher education yet are void of engineering, though engineering is heavily implied in the STEM acronym. This study investigated the amount of engineering present in water rocket activities, and options for emphasizing engineering more in water rocket activities using an open-platform flight simulator for use by educators to enable students to predict flight parameters of a water rocket they designed, and test those predictions against experimental data. The simulator was constructed in Excel® with many functions, but the function validated in this study was ...


Abstract Template Resrb 2017, Wojciech M. Budzianowski 2016 Wroclaw University of Technology

Abstract Template Resrb 2017, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


Order Form Resrb 2017, Wojciech M. Budzianowski 2016 Wroclaw University of Technology

Order Form Resrb 2017, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.


C.V., Wojciech M. Budzianowski 2016 Wroclaw University of Technology

C.V., Wojciech M. Budzianowski

Wojciech Budzianowski

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Solar Car Suspension System, Alex Power, Adam O'Camb 2016 California Polytechnic State University, San Luis Obispo

Solar Car Suspension System, Alex Power, Adam O'Camb

Mechanical Engineering

No abstract provided.


3-Axis Automated Probe Traverse For Aerodynamic Testing, Tananant Boonya-ananta, Ricky Wai, Zander Oostman, Teyvon Brooks 2016 California Polytechnic State University, San Luis Obispo

3-Axis Automated Probe Traverse For Aerodynamic Testing, Tananant Boonya-Ananta, Ricky Wai, Zander Oostman, Teyvon Brooks

Mechanical Engineering

Our primary objective is to design, build, and test an automated traverse to hold measurement probes in Cal Poly’s low speed wind tunnel. The device should cause minimal flow disturbance. It’s movements must be able to cover eighty percent of the three-dimensional test section. The device should have a mounting point for interchangeable probes. The assembly is to be integrated with the current frame structure on the wind tunnel test section, and should allow very minimal deflection of the measurement probe. The user should be able to control the motion of the traverse via a computer interface which ...


Dynamic Monitoring And Life Prediction Of Internal Strain-Gage Balances, David Leon Yoder 2016 University of Tennessee, Knoxville

Dynamic Monitoring And Life Prediction Of Internal Strain-Gage Balances, David Leon Yoder

Masters Theses

Wind tunnel test customers continue to push the limits by producing air vehicle designs that produce high aerodynamic loads at the desired test conditions. These loads are a combination of steady aerodynamic, unsteady aerodynamic, and inertial forces. A methodology to monitor the health of a wind tunnel strain-gage balance has been developed. The objective of this methodology is to define the stress limits of the balance and monitor these limits so the balance can be safely tested without failure of the balance. A balance failure could result in costly damage to the wind tunnel model, support system, and the wind ...


Novel Closed-Loop Control Strategy For Inkjet-Based Additive Manufacturing System, Yunong Shi, Chunsheng Ye 2016 Huazhong University of Science and Technology

Novel Closed-Loop Control Strategy For Inkjet-Based Additive Manufacturing System, Yunong Shi, Chunsheng Ye

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun 2016 Shenyang Research Institute of Foundry

Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Simulation Of Superplastic Forming Of Circular Edge-Welded Envelopes, Olga Tulupova 2016 Ufa State University of Oil & Petroleum

Simulation Of Superplastic Forming Of Circular Edge-Welded Envelopes, Olga Tulupova

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun, Guoyan Shui, Yang Guan, Guiqiao Su, Bo Yu, Lou Yanchun 2016 Shenyang Research Institute of Foundry

Study On Criterion Of Fabricating Columnar Dendrite Structure Dz466 Superalloy Based On Lmc Process, Xun Sun, Guoyan Shui, Yang Guan, Guiqiao Su, Bo Yu, Lou Yanchun

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Simulation Investigation Of Temperature Distribution In Large Aluminium Panel During Autoclave Age Forming Process, Yongqian Xu 2016 Central South University

Simulation Investigation Of Temperature Distribution In Large Aluminium Panel During Autoclave Age Forming Process, Yongqian Xu

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Steady-State Simulation And Die Improvement On The Extrusion Of Magnesium Square Tube With Thin Wall, Tao Lin, Yun-Teng Liu, Yuan-Sheng Yang, Ji-Xue Zhou 2016 Institute of Metal Research, Chinese Academy of Sciences

Steady-State Simulation And Die Improvement On The Extrusion Of Magnesium Square Tube With Thin Wall, Tao Lin, Yun-Teng Liu, Yuan-Sheng Yang, Ji-Xue Zhou

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


Simulation Of Two Kinds Of Hot Stamping Processes Of Ultra High-Strength Steel, Hao Zhao, Zhongwen Xing, Hongliang Yang 2016 Harbin Institute of Technology

Simulation Of Two Kinds Of Hot Stamping Processes Of Ultra High-Strength Steel, Hao Zhao, Zhongwen Xing, Hongliang Yang

The 8th International Conference on Physical and Numerical Simulation of Materials Processing

No abstract provided.


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