PULSE: Integrated Parametric Modeling for a Shading System - From Daylight Optimization to Additive Manufacturing

2017 ◽  
Keyword(s):  
Additive Manufacturing ◽  
Parametric Modeling

Automatic Parametric Modeling From Non-Feature Based Designs for Additive Manufacturing

2021 ◽  
Author(s):  
Xinyi Xiao ◽  
Byeong-Min Roh
Keyword(s):  
Additive Manufacturing ◽  
3D Models ◽  
Parametric Modeling ◽  
Parametric Models ◽  
Performance Simulation ◽  
Cad Modeling ◽  
3D Cad ◽  
Feature Based ◽  
And Performance ◽  
The Given

Abstract The integration of Topology optimization (TO) and Generative Design (GD) with additive manufacturing (AM) is becoming advent methods to lightweight parts while maintaining performance under the same loading conditions. However, these models from TO or GD are not in a form that they can be easily edited in a 3D CAD modeling system. These geometries are generally in a form with no surface/plane information, thus having non-editable features. Direct fabricate these non-feature-based designs and their inherent characteristics would lead to non-desired part qualities in terms of shape, GD&T, and mechanical properties. Current commercial software always requires a significant amount of manual work by experienced CAD users to generate a feature-based CAD model from non-feature-based designs for AM and performance simulation. This paper presents fully automated shaping algorithms for building parametric feature-based 3D models from non-feature-based designs for AM. Starting from automatically decomposing the given geometry into “formable” volumes, which is defined as a sweeping feature in the CAD modeling system, each decomposed volume will be described with 2D profiles and sweeping directions for modeling. The Boolean of modeled components will be the final parametric shape. The volumetric difference between the final parametric form and the original geometry is also provided to prove the effectiveness and efficiency of this automatic shaping methodology. Besides, the performance of the parametric models is being simulated to testify the functionality.

The structural origins of brittle star arm kinematics: An integrated tomographic, additive manufacturing, and parametric modeling-based approach

2020 ◽  
Vol 211 (1) ◽  
pp. 107481
Author(s):  
Lara Tomholt ◽  
Larry J. Friesen ◽  
Daniel Berdichevsky ◽  
Matheus C. Fernandes ◽  
Christoph Pierre ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Parametric Modeling ◽  
Brittle Star ◽  
Arm Kinematics

Key Technologies of Rapid Modeling for Additive Manufacturing

2014 ◽  
Vol 496-500 ◽  
pp. 2611-2615
Author(s):  
Zhi Wei Liu ◽  
Hai Ying Zhang
Keyword(s):  
Additive Manufacturing ◽  
Product Development ◽  
Hierarchical Modeling ◽  
Market Competition ◽  
Parametric Modeling ◽  
Product Development Process ◽  
Modeling Technology ◽  
Development Cycle ◽  
Product Development Cycle ◽  
Rapid Modeling

Faced with the increasingly fierce market competition, manufacturing needs to shorten the product development cycle, and Additive Manufacturing will be widely applied as it can greatly shorten the product development cycle. After years of development, Additive Manufacturing will face a good market prospect as the manufacturing equipment, materials and process have become more and more mature. However, modeling technology is always the bottleneck problem of the product development process, as it occupies most time of the product development. The aim of the paper is to illustrate how to improve the efficiency of modeling for additive manufacturing. As the the application conditions of Additive Manufacturing continues to be mature , rapid modeling technologies will be discussed in the paper, including hierarchical modeling ,standardized modeling and parametric modeling technology, which will lay the foundation for rapid modeling of product development. The method of comparative test verification is adopted in the paper, and the results show that rapid modeling technologies discussed in the paper can fully improve the efficiency of modeling for Additive Manufacturing.

scholarly journals Parametric Modeling of Biomimetic Cortical Bone Microstructure for Additive Manufacturing

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 913 ◽  
Author(s):  
José Robles-Linares ◽  
Erick Ramírez-Cedillo ◽  
Hector Siller ◽  
Ciro Rodríguez ◽  
J. Martínez-López
Keyword(s):  
Additive Manufacturing ◽  
Cortical Bone ◽  
Bone Tissue ◽  
In Silico ◽  
Bone Structure ◽  
Ion Beam ◽  
Bone Microstructure ◽  
Parametric Modeling ◽  
Patient Specific ◽  
Osteoporotic Bone

In this work we present a novel algorithm for generating in-silico biomimetic models of a cortical bone microstructure towards manufacturing biomimetic bone via additive manufacturing. The software provides a tool for physicians or biomedical engineers to develop models of cortical bone that include the inherent complexity of the microstructure. The correspondence of the produced virtual prototypes with natural bone tissue was assessed experimentally employing Digital Light Processing (DLP) of a thermoset polymer resin to recreate healthy and osteoporotic bone tissue microstructure. The proposed tool was successfully implemented to develop cortical bone structure based on osteon density, cement line thickness, and the Haversian and Volkmann channels to produce a user-designated bone porosity that matches within values reported from literature for these types of tissues. Characterization of the specimens using a Scanning Electron Microscopy with Focused Ion Beam (SEM/FIB) and Computer Tomography (CT) revealed that the manufacturability of intricated virtual prototype is possible for scaled-up versions of the tissue. Modeling based on the density, inclination and size range of the osteon and Haversian and Volkmann´s canals granted the development of a dynamic in-silico porosity (13.37–21.49%) that matches with models of healthy and osteoporotic bone. Correspondence of the designed porosity with the manufactured assessment (5.79–16.16%) shows that the introduced methodology is a step towards the development of more refined and lifelike porous structures such as cortical bone. Further research is required for validation of the proposed methodology model of the real bone tissue and as a patient-specific customization tool of synthetic bone.

Regeneration von Knochendefekten mit computergesteuerter Herstellung von Gerüstträgern

2013 ◽  
Vol 22 (03) ◽  
pp. 180-187 ◽  
Author(s):  
J. Henke ◽  
J. T. Schantz ◽  
D. W. Hutmacher
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
Custom Made

ZusammenfassungDie Behandlung ausgedehnter Knochen-defekte nach Traumata oder durch Tumoren stellt nach wie vor eine signifikante Heraus-forderung im klinischen Alltag dar. Aufgrund der bestehenden Limitationen aktueller Therapiestandards haben Knochen-Tissue-Engineering (TE)-Verfahren zunehmend an Bedeutung gewonnen. Die Entwicklung von Additive-Manufacturing (AM)-Verfahren hat dabei eine grundlegende Innovation ausgelöst: Durch AM lassen sich dreidimensionale Gerüstträger in einem computergestützten Schichtfür-Schicht-Verfahren aus digitalen 3D-Vorlagen erstellen. Wurden mittels AM zunächst nur Modelle zur haptischen Darstellung knöcherner Pathologika und zur Planung von Operationen hergestellt, so ist es mit der Entwicklung nun möglich, detaillierte Scaffoldstrukturen zur Tissue-Engineering-Anwendung im Knochen zu fabrizieren. Die umfassende Kontrolle der internen Scaffoldstruktur und der äußeren Scaffoldmaße erlaubt eine Custom-made-Anwendung mit auf den individuellen Knochendefekt und die entsprechenden (mechanischen etc.) Anforderungen abgestimmten Konstrukten. Ein zukünftiges Feld ist das automatisierte ultrastrukturelle Design von TE-Konstrukten aus Scaffold-Biomaterialien in Kombination mit lebenden Zellen und biologisch aktiven Wachstumsfaktoren zur Nachbildung natürlicher (knöcherner) Organstrukturen.

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