3D CAD Conceptual Design of an Artificial Knee

In the field of the widespread research activity focusing on ultra light aircraft, two different needs were merged into one single design activity: the educational necessity of getting students involved into a real design effort. Our intention was to apply the conceptual design methodologies developed by our research group, which is named ASSET (Aero Space Systems Engineering Team), to a real case study. The design case study was chosen after a thorough examination of existing vehicles. Starting from a reference aircraft, the concept of the new aircraft was then conceived and is now under completely defined. The conceptual design of the new ultra light aircraft is already finished, whereas its detailed design has just begun and is proceeding through the utilization of both virtual (3D‐CAD) and physical models.

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Integrating 3D Modeling, Sustainability and Cost Estimating at the Conceptual Design Stage of Bridges

Canadian Journal of Civil Engineering ◽

10.1139/cjce-2020-0230 ◽

2021 ◽

Author(s):

Aly Elgayar ◽

Ahmad Jrade

Keyword(s):

Conceptual Design ◽

3D Modeling ◽

Environmental Performance ◽

Design Stage ◽

Cost Estimating ◽

Rule Based ◽

3 Dimensional ◽

3D Cad ◽

Conceptual Design Stage ◽

Bridge Type

Integrated 3D Modeling adaptation on infrastructure has been slow due to technical challenges, such as the lack of interoperability between software. In an effort to partially fill this gap, a versatile model with 3D Modeling capabilities was developed to assist in designing sustainable bridges at the conceptual design stage. The model incorporates a rule-based expert system and four modules, namely: 3D CAD modeling, Bridge Sustainability Rating System (BrSRS), Bridge Environmental Performance Strategy Mapping (BrEPSM), and conceptual cost estimating. The 3D CAD module was developed using the Graphics.DrawLine method. The BrSRS and BrEPSM modules were developed by the amalgamation of identified pertinent sustainable and footprint indicators. The model aims to provide bridge type recommendations, allow customization of a sustainable bridge, illustrate forecasted footprint levels, present the conceptual design in AutoCAD’s 3-dimensional (3D) mode, facilitate a recalculation process when the bridge’s dimensions are altered, and generate a conceptual cost estimate.

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Modeling Framework for a Consistent Integration of Geometry Knowledge During Conceptual Design

Journal of Computing and Information Science in Engineering ◽

10.1115/1.4042551 ◽

2019 ◽

Vol 19 (2) ◽

Author(s):

Romain Barbedienne ◽

Olivia Penas ◽

Jean-Yves Choley ◽

Peter Hehenberger

Keyword(s):

Conceptual Design ◽

Collaborative Design ◽

Computer Aided Design ◽

System Modeling ◽

Data Consistency ◽

Design Stage ◽

Modeling Framework ◽

Physical Constraints ◽

3D Cad ◽

Architecture Modeling

This paper proposes a modeling framework for a consistent geometrical data link between a system model and a spatial architecture modeling in a 3D computer-aided design (CAD) environment, with a model-based system engineering (MBSE) approach. Our approach, focused on the conceptual design stage, for the evaluation of 3D architecture under physical constraints, aims at improving the system design by ensuring data consistency during collaborative design. This model transformation platform will ensure a seamless geometrical consistency and traceability from the requirements to the further design stages. The theoretical formalization of our approach presents a consistent integration of geometry knowledge all along the conceptual design. Then, the corresponding modeling platform implementation between the developed system modeling language (SysML) geometrical extension and a 3D CAD tool is described before detailing an application on a conveyor case study.

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FROM CAD TO PHYSICS-BASED DIGITAL TWIN: FRAMEWORK FOR REAL-TIME SIMULATION OF VIRTUAL PROTOTYPES

Proceedings of the Design Society: DESIGN Conference ◽

10.1017/dsd.2020.47 ◽

2020 ◽

Vol 1 ◽

pp. 335-344

Author(s):

J. G. Pereira ◽

A. Ellman

Keyword(s):

Product Development ◽

Conceptual Design ◽

Engineering Process ◽

Digital Twin ◽

3D Cad ◽

Time Simulation ◽

Computer Aided ◽

Engineering Work ◽

Cad Models ◽

Virtual Prototypes

AbstractEngineering work is mostly done in 3D CAD software throughout the engineering process from conceptual design and layout of products. Physics-Based Virtual Prototypes are very valuable addition on Computer Aided Engineering enabling product development simulators, training simulators and digital twin concept in product lift-cycle process. In this work, we present a framework, how such virtual prototypes can be developed from 3D CAD models with meaningful effort.

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