Three-dimensional anthropometric methods provide much more surface information about the human body than traditional anthropometry. Therefore,making use of this information correctly and fully has become a new researc...
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Three-dimensional anthropometric methods provide much more surface information about the human body than traditional anthropometry. Therefore,making use of this information correctly and fully has become a new research field in applied ergonomics. On the one hand,humandigitalmodeling is a method to represent a target population based on anthropometric data for design processes. On the other hand, current digitalmodeling is not an exact representation of a person because it somewhat overlooks many 3D human body surface characteristics which can be acquired by 3D anthropometric methods. To be able to take 3D characteristics of body form into consideration, we developed a concept of defining human body form in terms of mathematical description. The discovery of the laws of human body form in terms of mathematical description will definitely add more scientific theory to current digitalhumanmodeling. In addition,a semantic concept of body form based on mathematical terms should be developed into a new language that can be understood by designers. As a result,a bridge is built between 3D anthropometric data and industrial design. Finally, this concept will also give a new insight into the conceptualization of product design. This paper discusses the necessity and possibility of mathematical terms to describe human body form for industrial design not only in product design but also for workplace evaluation and design. Furthermore,some new ideas for further study are discussed.
The effect of improved cognition on algorithm performance and evaluation is an exciting area of research. Virtual reality is becoming increasingly popular as a tool for interacting with data and steering the optimizat...
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The effect of improved cognition on algorithm performance and evaluation is an exciting area of research. Virtual reality is becoming increasingly popular as a tool for interacting with data and steering the optimization process, rather than simply displaying results. Constantly evolving haptic technology allows people to directly interact with digital objects and data as they do in the real world using their sense of touch., Haptics is revolutionizing the way engineers interact with computers. Hitherto, designers and artists have used haptics to intuitively sculpt models using digital clay and doctors have trained on haptics based virtual surgical simulators Most applications however merely seek to make up for the lack of sense of touch and its effects. The current work investigates the application of the haptics loop for decision support activities in core engineering areas like design optimization and shop floor layout. The simulated annealing algorithm with an adaptive cooling schedule is used to solve the quadratic assignment problem for facility layout The results obtained are interpreted and tested using a combined haptic and graphic environment. The value added due to haptics in virtual reality environments is an open problem. human factor experiments for a decision-making environment were conducted to measure the value added due to inclusion of haptics. After a comprehensive series of tests, a decision is made with regards to use of haptics for engineering and scientific applications.
Solid models are the critical data elements in modern computer-aided design (CAD) environments, describing the shape and form of manufactured artifacts. Their growing ubiquity has created new problems in how to effect...
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ISBN:
(纸本)0769508537
Solid models are the critical data elements in modern computer-aided design (CAD) environments, describing the shape and form of manufactured artifacts. Their growing ubiquity has created new problems in how to effectively manage the many models that are now stored in the digital libraries of large design and manufacturing enterprises. Existing techniques from the engineering literature and from industrial practice, such as group technology, rely on human-supervised encoding and classification, while techniques from the multimedia database and computer graphics/vision communities often ignore the manufacturing attributes most significant in the classification of models. This paper presents our approach to the manufacturing similarly assessment of solid models of mechanical parts based on machining features. Our technical approach is three-fold: (1) perform machining feature extraction to map the solid model to a set of STEP AP 224 machining features; (2) construct a model dependency graph from the set of machining features; and (3) find the nearest neighbors to the query graph using an iterative improvement search across a database of other models. We also present empirical experiments to validate our approach using our testbed, the National design Repository ( ). The contribution of this research is the first fully automated technique for machining feature-based comparisons of mechanical artifacts. We believe that this work can lead to radical changes in the way in which design data is managed in modern engineering enterprises.
Over the past fifteen years, modelinghumans in systems has become a more and more common part of design. There have been two focuses of modelinghumans - modelinghuman anthropometry and biomechanics and modeling hum...
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The realistic simulation of human postures and motion becomes more and more an important tool for the design and development of vehicles and cockpits. Todays professional digitalhuman models are using mainly two diff...
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The purpose of this paper is to provide a general process for human model analysis in the digital mock-up environment. It is also intended to provide some basic guidelines for the use and application of human models. ...
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This paper discusses the cooperative research and development work between Delphi Automotive Systems (formerly known as Delphi Interior & Lighting Systems) and the U.S. Army TACOM/TARDEC. Discussion will focus on ...
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This paper discusses the cooperative research and development work between Delphi Automotive Systems (formerly known as Delphi Interior & Lighting Systems) and the U.S. Army TACOM/TARDEC. Discussion will focus on past work and the evolution of the approaches currently being used by TARDEC and Delphi for digitalhuman animation, real-time human interaction (man in the loop), and motion data library development, as it relates to TACOM/Delphi's electromagnetic motion capture systems and the engineering Animation Incorporated (EAI)-Jack ergonomic analysis/animation software.
While automation has eliminated many types of operator error, it has also created new types of technology-induced human errors. Many of these new errors are the result of what has been labeled technology-centered auto...
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While automation has eliminated many types of operator error, it has also created new types of technology-induced human errors. Many of these new errors are the result of what has been labeled technology-centered automation, where designers focus most of their attention on the mapping from software inputs to outputs, on mathematical models of required functionality, and on the technical details and problems internal to the computer: Little attention is given to evaluating software in terms of whether it provides transparent and consistent behavior that supports operators in their monitoring and control tasks. The goal of our research is to create and evaluate a methodology for integrated design of complex systems, including design of the automation and the human tasks, that minimizes human error through appropriate system and operator task design. The methodology is based on formal modeling, simulation, and analysis techniques for the software behavior, the user model of the system, and the operator tasks. This paper describes the human factors aspects of our approach using as an example the vertical flight control logic for a realistic aircraft flight management system FMS. Although the MD-11 FMS was used to derive the example for our case study, we made up much of the information due to our lack of knowledge about the design and the rationale of the real MD-11 design, and nothing in this paper should be taken as applying to that aircraft's actual automation. A companion paper at this conference describes the parts of the methodology focusing on the modeling and analysis of the automation itself.
This paper describes application examples of RAMSIS, a 3-D CAD human model for ergonomic truck evaluations, to truck design. RAMSIS realistically simulates truck driver postures and locations, an important prerequisit...
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This paper describes the features and use of a computerized human model MAN3D in the ergonomic evaluation of a container crane workplace. Detail is given to how human models are defined based on an anthropometric surv...
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