Biomechanical Applications of Computers in Engineering Education

2007 ◽  
Author(s):  
Alexandra Schonning
Keyword(s):  
Communication Skills ◽  
Lower Limb ◽  
Three Dimensional ◽  
Computer Models ◽  
Computer Aided Engineering ◽  
Engineering Curriculum ◽  
Report Writing ◽  
Engineering Software ◽  
Technical Report ◽  
Computer Aided

This paper discusses integration of biomechanical research in the undergraduate mechanical engineering curriculum. The projects presented emphasize the use of computers and computer-aided engineering software. Two different projects are discussed. The first project involves generation of three-dimensional computer models of the bones of the lower limb, and the second project the generation of three-dimensional computer models of the shoulder to be used in developing an implant. Through these projects the students learned specialized computer-aided engineering software tools and also enhanced their communication skills through technical report writing and presenting a paper at a conference.

Evaluation of Bone Volume after Secondary Bone Grafting in Unilateral Alveolar Cleft Using Computer-Aided Engineering

2014 ◽  
Vol 51 (6) ◽  
pp. 665-668 ◽  
Author(s):  
Hayato Nagashima ◽  
Yoshiaki Sakamoto ◽  
Hisao Ogata ◽  
Junpei Miyamoto ◽  
Masaki Yazawa ◽  
...  
Keyword(s):  
Cleft Palate ◽  
Bone Graft ◽  
Bone Grafting ◽  
Three Dimensional ◽  
Bone Grafts ◽  
Bone Volume ◽  
Computer Aided Engineering ◽  
Alveolar Cleft ◽  
Alveolar Bone Grafting ◽  
Computer Aided

The purpose of this study was to evaluate the initial defect and the outcome of bone grafts for unilateral alveolar cleft. To determine the absorption of the bone graft in patients with unilateral cleft, computer-aided engineering (CAE) with multi-detector row computed tomography (MDCT) was used. MDCT scans of 29 patients were taken immediately preoperatively and at 1 month and 6 months postoperatively. The patients underwent bone grafting between 8 and 14 years of age using iliac crest bone grafts. Three-dimensional models were created in each period, and the defect at the alveolar cleft and volume of the bone graft were determined in each patient using CAE. Cleft volume and success of alveolar bone grafting were significantly correlated ( P < .01). Alveolar clefts with cleft palate required more bone volume than those without cleft palate ( P < .01), but the resorption rate did not significantly differ between alveolar clefts with and without cleft palate (0.48 ± 0.14 and 0.49 ± 0.18, respectively; P =.93). In conclusion, three-dimensional reconstruction of bone grafts using CAE based on MDCT provides a valuable objective assessment of graft volume.

A Foundation for Interoperability in Next-Generation Product Development Systems

2000 ◽  
Author(s):  
Simon Szykman ◽  
Steven J. Fenves ◽  
Walid Keirouz ◽  
Steven B. Shooter
Keyword(s):  
Product Development ◽  
Product Information ◽  
Computer Aided Engineering ◽  
Next Generation ◽  
Development Environment ◽  
Feed Forward ◽  
Engineering Software ◽  
Computer Aided ◽  
Cad Cam ◽  
The Cost

Abstract U.S. industry spends billions of dollars as a result of poor interoperability between computer-aided engineering software tools. While ongoing standards development efforts are attempting to address this problem in today’s tools, the more significant demand in next-generation tools will be for representations that allow information used or generated during various product development activities to feed forward and backward into others by way of direct electronic interchange. Although the next generation of tools has the potential for greatly increased benefits, there is also a potential for the cost of poor interoperability to multiply. The goal of this work is to develop representations of information that are unavailable in traditional CAD/CAM/CAE tools to support the exchange of product information in a distributed product development environment. This paper develops a vision of next-generation product development systems and provides a core representation for product development information on which future systems can be built.

scholarly journals Development of a computer-aided engineering–supported process for the manufacturing of customized orthopaedic devices by three-dimensional printing onto textile surfaces

2020 ◽  
Vol 15 ◽  
pp. 155892502091762
Author(s):  
Dustin Ahrendt ◽  
Arturo Romero Karam
Keyword(s):  
Three Dimensional ◽  
Computer Aided Engineering ◽  
Two Dimensional ◽  
Three Dimensional Printing ◽  
Textile Materials ◽  
Fused Deposition ◽  
Custom Made ◽  
Computer Aided ◽  
Dimensional Printing ◽  
Textile Fabric

Today, additive manufacturing, also called three-dimensional printing, is used for producing prototypes as well as other products for various industrial sectors. Although this technology is already well established in the automotive, aviation and space travel, building, dental and medical sectors, its integration in the textile and ready-made industry is still in progress. At present, there is a lack of specific application scenarios for the combination of three-dimensional printing and textile materials, apart from fashion and shoe design. Hence, this article presents a digital computer-aided engineering–supported process to manufacture customized orthopaedic devices by three-dimensional printing directly onto a textile fabric. State-of-the-art fabrication methods for orthoses are typically labour intensive. The combination of three-dimensional scanning, computer-aided design modelling and three-dimensional printing onto textile materials open up new possibilities for producing custom-made products. After three-dimensional scanning of a patient’s individual body shape, the surface is prepared for constructing the textile pattern cuts by reverse engineering. The transformation of the designed three-dimensional patterns into two-dimensional is software supported. Additional positioning lines in accordance with specific body measurements are transferred onto the two-dimensional pattern cuts, which are then used as the basis for the design of the three-dimensional printed functional elements. Subsequently, the design is saved in STL (Standard Triangulation/Tessellation Language) file format, prepared by slicing and directly printed onto textile pattern cuts by means of fused deposition modelling. The last manufacturing step involves the assembly of the textile fabric. The proposed process is demonstrated by an example application scenario, thus proving its potential for industrial use in the textile and ready-made industry.

Challenges and Opportunities in Geometric Modelling of Complex Bio-Inspired 3D Objects Designed for Additive Manufacturing

2021 ◽  
pp. 1-27
Author(s):  
Nikita Letov ◽  
Pavan Tejaswi Velivela ◽  
Siyuan Sun ◽  
Yaoyao Fiona Zhao
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Geometric Modelling ◽  
Survey Paper ◽  
Engineering Software ◽  
Modelling Method ◽  
Geometric Objects ◽  
Computer Aided ◽  
Challenges And Opportunities

Abstract Ever since its introduction over five decades ago, geometric solid modelling has been crucial for engineering design purposes and is used in engineering software packages such as computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), etc. Solid models produced by CAD software have been used to transfer geometric information from designers to manufacturers. Since the emergence of additive manufacturing (AM), a CAD file can also be directly uploaded to a three-dimensional (3D) printer and used for production. AM techniques allow manufacturing of complex geometric objects such as bio-inspired structures and lattice structures. These structures are shapes inspired by nature and periodical geometric shapes consisting of struts interconnecting in nodes. Both structures have unique properties such as significantly reduced weight. However, geometric modelling of such structures has significant challenges due to the inability of current techniques to handle their geometric complexity. This calls for a novel modelling method that would allow engineers to design complex geometric objects. This survey paper reviews geometric modelling methods of complex structures to support bio-inspired design created for AM which includes discussing reasoning behind bio-inspired design, limitations of current modelling approaches applied to bio-inspired structures, challenges encountered with geometric modelling and opportunities that these challenges reveal. Based on the review, a need for a novel geometric modelling method for bio-inspired geometries produced by AM is identified. A framework for such bio-inspired geometric modelling method is proposed as a part of this work.

Computer-Aided Engineering Approach for Parametric Investigation of Locked Plating Systems Design

2013 ◽  
Vol 7 (2) ◽  
Author(s):  
Joshua C. Arnone ◽  
A. Sherif El-Gizawy ◽  
Brett D. Crist ◽  
Gregory J. Della Rocca ◽  
Carol V. Ward
Keyword(s):  
Finite Element ◽  
Three Dimensional ◽  
Systems Design ◽  
Computer Aided Engineering ◽  
Design Parameters ◽  
Locked Plating ◽  
Element Analysis ◽  
Parametric Investigation ◽  
Computer Aided ◽  
Processing Techniques

The present paper presents an integrated computer-aided engineering (CAE) approach combining digital imaging, solid modeling, robust design methodology, and finite element analysis in order to conduct a parametric investigation of the design of locked plating systems. The present study allows for understanding the contributions of different design parameters on the biomechanics and reliability of these systems. Furthermore, the present approach will lead to exploration of optimum design parameters that will result in robust system performance. Three-dimensional surface models of cortical and cancellous femoral bone were derived via digital computed tomography (CT) image processing techniques and a medical imaging analysis program. A nine orthogonal array matrix simulation (L9) was conducted using finite element methods to study the effects of the various design parameters on plate performance. The introduced technique was demonstrated and experimentally verified on a case study using a Smith & Nephew PERI- LOC distal femur locking plate and a Synthes Less Invasive Stabilization System (LISS).

Computer-aided engineering software for semi-solid metal manufacturing

JOM ◽  
1998 ◽  
Vol 50 (8) ◽  
pp. 21-23 ◽  
Author(s):  
Gerald P. Backer
Keyword(s):  
Solid Metal ◽  
Computer Aided Engineering ◽  
Engineering Software ◽  
Computer Aided ◽  
Semi Solid

The Designing of Blood Pumps for Artificial Heart by Computer-Aided Engineering Software

2002 ◽  
Vol 2002.14 (0) ◽  
pp. 185-186
Author(s):  
Takashi ISOYAMA ◽  
Tuneo CHINZEI ◽  
Itsuro SAITO ◽  
Yusuke ABE ◽  
Kou IMACHI
Keyword(s):  
Artificial Heart ◽  
Computer Aided Engineering ◽  
Engineering Software ◽  
Blood Pumps ◽  
Computer Aided

Three–Dimensional Computer Models of Man

1986 ◽  
Vol 30 (3) ◽  
pp. 216-220 ◽  
Author(s):  
Patricia L. Rothwell ◽  
Dianne T. Hickey
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Models ◽  
Design Methods ◽  
Three Dimensions ◽  
Workplace Design ◽  
Potential Problems ◽  
Computer Aided ◽  
Aided Design

To assess the merit of using computer-aided design to model man in three dimensions, many potential problems and advantages must be considered. This paper addresses two related issues. First, it outlines several problems associated with obtaining information on the topic and second, it suggests several ways in which computer man-modelling is superior to traditional workplace design methods.

Modernization of the mechanical engineering curriculum and guidelines for computer-aided engineering instruction

1999 ◽  
Vol 7 (4) ◽  
pp. 252-260 ◽  
Author(s):  
Sheryl A. Sorby ◽  
Graham Walker ◽  
Miles Yano ◽  
Vladimir Glozman ◽  
Kevin Kochersberger ◽  
...  
Keyword(s):  
Mechanical Engineering ◽  
Computer Aided Engineering ◽  
Engineering Curriculum ◽  
Computer Aided
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