A Design Method Based on Extraction of Key Points of the Contours of Agricultural Machinery’s Internal Structure: A Case Study on the Design of a Small Self-Propelled Square Baler

2012 ◽  
Vol 215-216 ◽  
pp. 372-377 ◽  
Author(s):  
Sha Liu ◽  
Yun Qi Wang ◽  
Xiao Gang Ma ◽  
De Cheng Wang
Keyword(s):  
Reverse Engineering ◽  
Internal Structure ◽  
Design Process ◽  
Design Method ◽  
Data Fitting ◽  
Rational Method ◽  
Structural Components ◽  
Key Points ◽  
Straight Lines

Refer to Reverse Engineering of extracting points cloud to generate a digital model, the paper proposes a rational method to design agricultural machinery's appearance. Depending on the product's internal structure contours, we can extract several key points and connect them by four ways: straight lines connecting, arcs connecting, free curves connecting and data fitting. Then we choose and modify the connected lines by a unified style to get the main profile of the machinery, which can better match the structural components. In the end a small self-propelled square baler's design process was presented to describe and testify the method.

A Design of a Small Self-Propelled Mower by Building the Key Curves Based on the Internal Structure

2012 ◽  
Vol 591-593 ◽  
pp. 106-111
Author(s):  
Sha Liu ◽  
Yun Qi Wang ◽  
Lei Wei ◽  
De Cheng Wang
Keyword(s):  
Internal Structure ◽  
Design Method ◽  
Morphological Evolution ◽  
Data Fitting ◽  
Structural Components ◽  
Key Points ◽  
Final Design ◽  
Straight Lines

Based on the internal structure of a small self-propelled mower, extract key points and make the main outlines of the machine by connecting the points in four ways: straight lines connect, arcs connect, free curves connect and data fitting. Then start from the main outlines and make the morphological evolution by the rules of "tilt", "fillet" and the characteristic of curves to obtain lots of basic shapes of the machines. Choose and modify the shapes by a unified style to get the final design of the mower. The period of the R&D of the small self-propelled mower is shorten and the final design is simple and effective in line with the appearance needs of such kind of products. Moreover the final shells of the mower are better match with the structural components. That verifies the feasibility of the design method and its better effect.

scholarly journals Design Method to Structure Orthosis Design: Camptocormia Postural Brace Case Study

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Ricardo Duarte ◽  
Jean-Pierre Nadeau ◽  
Antonio Ramos ◽  
Michel Mesnard
Keyword(s):  
Design Process ◽  
Research Method ◽  
Development Process ◽  
Design Method ◽  
Upright Posture ◽  
Design Strategies ◽  
Short Term ◽  
Design Problems ◽  
Class 1

The orthosis is considered a class 1 medical device which often originates from a nonstructured development process. As these devices are mainly developed by small- and medium-sized enterprises, with no standard research method, the result can be an unadapted device which may not respond to the user’s needs and which in the short term may be abandoned. One way to solve this problem is to define and apply standard rules and procedures throughout the development/design process. Although methodologies may solve the “empiricism” in orthosis design problems, these design strategies are not applied during orthosis development due to the particularities of this field and the difficulties in linking the required knowledge and the actors that may be present during the orthosis development. The objective of this work is to develop a methodology to structure the orthosis design process that takes into account both the device life cycle and the different stakeholders involved in the design process. A case study was used to validate the proposed methodology. It was applied to the development of an orthosis to treat a specific postural disorder called camptocormia, also known as bent spine syndrome. This disorder is characterized by the anteroflexion of the trunk and especially affects elderly people. Contrary to scoliosis, the characteristics of camptocormia are not permanent, which means that the patient is able to straighten his posture. A postural brace is used to treat this disorder which enables the patient to redress and maintain the correct upright posture of the trunk.

Topological interlocking in architecture: A new design method and computational tool for designing building floors

2017 ◽  
Vol 15 (2) ◽  
pp. 107-118 ◽  
Author(s):  
Michael Weizmann ◽  
Oded Amir ◽  
Yasha Jacob Grobman
Keyword(s):  
Design Process ◽  
Architectural Design ◽  
Design Method ◽  
Structural Systems ◽  
Two Dimensional ◽  
Structural Elements ◽  
Computational Tool ◽  
Topological Interlocking ◽  
Further Development

This article presents a framework for the design process of structural systems based on the notion of topological interlocking. A new design method and a computational tool for generating valid architectural topological interlocking geometries are discussed. In the heart of the method are an algorithm for automatically generating valid two-dimensional patterns and a set of procedures for creating several types of volumetric blocks based on the two-dimensional patterns. Additionally, the computational tool can convert custom sets of closed planar curves into structural elements based on the topological interlocking principle. The method is examined in a case study of a building floor. The article concludes with discussions on the potential advantages of using the method for architectural design, as well as on challenging aspects of further development of this method toward implementation in practice.

scholarly journals Architectural and Structural Design of Free-form Structures – Case Study

2018 ◽  
Vol 11 (2) ◽  
pp. 44-60
Author(s):  
Kitti Károlyfi ◽  
Gabriella László ◽  
Ferenc Papp ◽  
Raymond Bükkösi
Keyword(s):  
Conceptual Design ◽  
Design Process ◽  
Structural Design ◽  
Parametric Design ◽  
Design Method ◽  
Steel Structure ◽  
Free Form ◽  
Design Software ◽  
Free Form Structures

This article describes the conceptual design process of an equestrian centre, presenting the covered stadium of the building complex in detail, designed it as a free-form, wide-span steel structure. The main goal of this study is to present the application of the parametric design method through a case study and to examine the interoperability opportunities between architectural and structural design software.

scholarly journals Evaluation and Analysis Model of the Length of Added Displaced Left-Turn Lane Based on Entropy Evaluation Method

2021 ◽  
Vol 2021 ◽  
pp. 1-22
Author(s):  
Binghong Pan ◽  
Jinfeng Ying ◽  
Shasha Luo ◽  
Yang Shao ◽  
Shangru Liu ◽  
...  
Keyword(s):  
Design Process ◽  
Traffic Congestion ◽  
Evaluation Method ◽  
Design Method ◽  
Urban Traffic ◽  
Assessment Model ◽  
Analysis Model ◽  
Left Turn ◽  
New Type

As the number of vehicles continues to grow in China, the problem of urban traffic congestion gets more serious, particularly at intersections. As a new type of unconventional intersection, the displaced left-turn (DLT) intersection has been widely recognized to improve the efficiency of intersections with heavy left-turn traffic flows. Converting an existing intersection into an intersection with additional DLT lanes is a valuable solution. However, the studies on DLT intersections mainly focus on performance, applicability, and safety. The guidelines on the specific engineering design process mostly come from experience, and the study on the considering multifactor design method is still insufficient. Therefore, this paper proposed an evaluation and analysis model of the lengths of added DLT lanes based on the entropy evaluation method, in which VISSIM and Surrogate Safety Assessment Model (SSAM) software were adopted for simulation. A design process for the length of the added DLT lanes was proposed with this model. An urban intersection in Xi’an was taken as a case study, and the application of the model and the design process was studied in detail. After selecting four evaluation indicators, the model was applied to calculate and analyze the optimal length of the added DLT lanes under 45 different traffic volume combinations. The recommended lengths of different situations were within the range recommended in the guidebook published by Federal Highway Administration. The results of the case study proved that the model proposed in this paper was advanced, reasonable, and practical.

Pilot study of the wrist orthosis design process

2014 ◽  
Vol 20 (1) ◽  
pp. 27-32 ◽  
Author(s):  
David Palousek ◽  
Jiri Rosicky ◽  
Daniel Koutny ◽  
Pavel Stoklásek ◽  
Tomas Navrat
Keyword(s):  
Clinical Practice ◽  
Design Process ◽  
Content Type ◽  
Alternative Approach ◽  
Key Points ◽  
Polygonal Surface ◽  
Design And Manufacturing ◽  
Stereo Photogrammetry ◽  
Further Development

Purpose – The purpose of this paper is to describe a manufacturing methodology for a wrist orthosis. The case study aims to offer new approaches in the area of human orthoses. Design/methodology/approach – The article describes the utilization of rapid prototyping (RP), passive stereo photogrammetry and software tools for the orthosis design process. This study shows the key points of the design and manufacturing methodology. The approach uses specific technologies, such as 3D digitizing, reverse engineering and polygonal-surface software, FDM RP and 3D printing. Findings – The results show that the used technologies reflect the patient's requirements and also they could be an alternative solution to the standard method of orthosis design. Research limitations/implications – The methodology provides a good position for further development issues. Practical implications – The methodology could be usable for clinical practice and allows the manufacturing of the perfect orthosis of the upper limb. The usage of this methodology depends on the RP system and type of material. Originality/value – The article describes a particular topical problem and it is following previous publications in the field of human orthoses. The paper presents the methodology of wrist orthosis design and manufacturing. The paper presents an alternative approach applicable in clinical practice.

User Preferences in the Design of Multi-Purpose Products: A Case Study on the Redesign of a Utility Tool

2016 ◽  
Author(s):  
Vimal Viswanathan ◽  
Shraddha Sangelkar ◽  
David Alexander ◽  
Johnathan Brock Moody
Keyword(s):  
Design Process ◽  
Design Theory ◽  
Design Method ◽  
Design Guidelines ◽  
User Preferences ◽  
Lessons Learned ◽  
Main Function ◽  
Original Design ◽  
Primary Function

There is an abundance of multi-purpose products in the market. Multi-purpose products are defined as the artifacts that have more than one primary function. While some of the multipurpose products are well designed and successful in the market, many of them fail to make an impact. Many times, these products are designed without considering critical aspects of customer requirements into account. The current research in design theory and methodology primarily addresses the design of products with one main function and many supporting sub-functions. When more than one primary function is present in the design, the process becomes more complicated. Many times, the primary functions conflict with each other, making the design process further complicated. Motivated by this fact, we aim to develop a comprehensive design method that considers the user’s perspective for the design of multi-purpose products. As a first step, we developed a set of guidelines from a user point of view. This paper presents a case study where the authors redesigned a multi-purpose utility tool, which has a very high potential and a targeted audience. The original design process behind the product is studied with the help of the designer and the manufacturer. The newly developed guidelines are repeatedly applied on the product to derive new requirements for its redesign. Following a systematic redesign procedure, the product is redesigned. This paper details the case study along with the lessons learned from the same. It also describes the best scenarios for the use of the multi-purpose product design guidelines.

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