The emerging technology of CAD/CAM

Lichten, Larry

doi:10.1145/800171.809635

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…In addition to molding simulation research, the 1980s also saw the emergence of computer-aided design (CAD) as a mainstream tool in product design [161]. Early CAD systems were predominantly surface or wire-frame-based, which meant that geometry was represented by surfaces with no thickness displayed [162]. However, the local thickness information has been assigned to the elements during mesh generation [163].…”

Section: Overview Of Research Approachesmentioning

confidence: 99%

Approaches for Numerical Modeling and Simulation of the Filling Phase in Injection Molding: A Review

Baum,

Anders,

Reinicke

2023

Polymers

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Injection molding is a multiphase process that requires accurate simulation of the filling phase. This is a key element in predicting the complete injection molding cycle. The filling phase presents a complex set of challenges, including migrating melt fronts, multi-phase flow, non-Newtonian fluid dynamics, and intertwined heat transfer. Evolving from 1D to 2D, 2.5D, and 3D techniques, filling simulation research has adapted to capture the intricacies of injection-molded parts. However, the need for accuracy in the characterization of the rheological properties of polymers during filling is still of paramount importance. In order to systematically categorize the numerical methods used to simulate the filling phase of injection molding, this review paper provides a comprehensive summary. Particular emphasis is given to the complex interaction of multiple geometric parameters that significantly influence the dynamic evolution of the filling process. In addition, a spectrum of rheological models is thoroughly and exhaustively explored in the manuscript. These models serve as basic mathematical constructs to help describe the complex viscous behavior of polymers during the filling phase. These models cover a spectrum of complexity and include widely recognized formulations such as the Power-Law, second-order, Herschel–Bulkley, Carreau, Bird–Carreau, and Cross models. The paper presents their implementation to include the temperature-dependent influence on viscosity. In this context, the extensions of these models are explained in detail. These extensions are designed to take into account the dynamic viscosity changes caused by the different thermal conditions during the filling process. An important contribution of this study is the systematic classification of these models. This categorization encompasses both academic research and practical integration into commercial software frameworks. In addition to the theoretical importance of these models, their practical value in overcoming challenges in the field of injection molding is emphasized. By systematically outlining these models within a structured framework, this classification promotes a comprehensive understanding of their intrinsic characteristics and relevance in different scenarios.

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Section: Overview Of Research Approachesmentioning

confidence: 99%

Approaches for Numerical Modeling and Simulation of the Filling Phase in Injection Molding: A Review

Baum,

Anders,

Reinicke

2023

Polymers

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“…In most CAD applications, a text-based Command Line Interface (CLI) and WIMPbased Graphical User Interface (GUI) are still the mainly used components to date [20,22,23]. These traditional interaction modes have some obvious limitations for CAD applications as users have to create, modify, and manipulate 3D models with 2D devices (mouse and monitor), which make it difficult to meet users' needs for natural interactions.…”

Section: Introductionmentioning

confidence: 99%

Multimodal Natural Human–Computer Interfaces for Computer-Aided Design: A Review Paper

et al. 2022

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Computer-aided design (CAD) systems have advanced to become a critical tool in product design. Nevertheless, they still primarily rely on the traditional mouse and keyboard interface. This limits the naturalness and intuitiveness of the 3D modeling process. Recently, a multimodal human–computer interface (HCI) has been proposed as the next-generation interaction paradigm. Widening the use of a multimodal HCI provides new opportunities for realizing natural interactions in 3D modeling. In this study, we conducted a literature review of a multimodal HCI for CAD to summarize the state-of-the-art research and establish a solid foundation for future research. We explore and categorize the requirements for natural HCIs and discuss paradigms for their implementation in CAD. Following this, factors to evaluate the system performance and user experience of a natural HCI are summarized and analyzed. We conclude by discussing challenges and key research directions for a natural HCI in product design to inspire future studies.

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Brain-Computer Interfaces (BCI) Based 3D Computer-Aided Design (CAD): To Improve the Efficiency of 3D Modeling for New Users

Huang

Chen

2017

Lecture Notes in Computer Science

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The emerging technology of CAD/CAM

Cited by 3 publications

References 6 publications

Approaches for Numerical Modeling and Simulation of the Filling Phase in Injection Molding: A Review

Approaches for Numerical Modeling and Simulation of the Filling Phase in Injection Molding: A Review

Multimodal Natural Human–Computer Interfaces for Computer-Aided Design: A Review Paper

Brain-Computer Interfaces (BCI) Based 3D Computer-Aided Design (CAD): To Improve the Efficiency of 3D Modeling for New Users

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