Evaluation of Critical Conditions in Offshore Vessel Operation by Response Based Optimization Procedures

2010 ◽  
Author(s):  
Gu¨nther F. Clauss ◽  
Marco Klein ◽  
Florian Sprenger ◽  
Daniel Testa
Keyword(s):  
Design Process ◽  
Process Model ◽  
Rogue Wave ◽  
Test Procedure ◽  
Wave Generation ◽  
Model Tests ◽  
Floating Structure ◽  
Worst Case ◽  
Design Process Model ◽  
Relative Motions

During the design process of floating structures, different boundary conditions have to be taken into account. Besides the basic determination of the type of vessel, the range of application and the main dimensions at the initial stage, the reliability and the warranty of economical efficiency are an inevitable integral part of the design process. Model tests to evaluate the characteristics and the performance of the floating structure are an important milestone within this process. Therefore it is necessary to determine an adequate test procedure which covers all essential areas of interest. The focus lies on the limiting criteria of the design such as maximum global loads, maximum relative motions between two or more vessels or maximum accelerations, at which the floating structure has to operate or to survive. These criteria are typically combined with a limiting characteristic sea state (Hs, Tp) or a rogue wave. However, the important question remains: What is the worst case scenario for each design parameter — the highest rogue wave or a wave group of certain frequency? And which sea states have to be taken into account for the experimental evaluation of the limiting criteria? As an approach to these challenges, a response based wave generation tool for critical wave sequence detection is introduced. By means of this procedure, model tests can be conducted more efficiently. Besides the theoretical background of the response based wave generation tool, an exemplary practical application for a multi-body system is shown with maximum relative motions as the limiting criterion.

The design of modular oil tank: A new design process model

2020 ◽  
Vol 15 ◽  
Author(s):  
Jin Li ◽  
Xingsheng Jiang ◽  
Jingye Li ◽  
Yadong Zhao ◽  
Xuexing Li
Keyword(s):  
Product Design ◽  
Design Process ◽  
Process Model ◽  
Mechanical Design ◽  
Computer Software ◽  
Reference Value ◽  
Fuel Tank ◽  
Design Quality ◽  
Design Time ◽  
Design Process Model

Background: In the whole design process of modular fuel tank, there are some unreasonable phenomena. As a result, there are some defects in the design of modular fuel tank, and the function does not meet the requirements in advance. This paper studies this problem. Objective: Through on-the-spot investigation of the factory, a mechanical design process model is designed. The model can provide reference for product design participants on product design time and design quality, and can effectively solve the problem of low product design quality caused by unreasonable product design time arrangement. Methods: After sorting out the data from the factory investigation, computer software is used to program, simulate the information input of mechanical design process, and the final reference value is got. Results: This mechanical design process model is used to guide the design and production of a new project, nearly 3 months ahead of the original project completion time. Conclusion: This mechanical design process model can effectively guide the product design process, which is of great significance to the whole mechanical design field.

scholarly journals Personalization in Game Design for Healthcare: a Literature Review on its Definitions and Effects

2016 ◽  
Vol 3 (4) ◽  
Author(s):  
Marierose Van Dooren ◽  
Valentijn Visch ◽  
Renske Spijkerman ◽  
Richard Goossens ◽  
Vincent Hendriks
Keyword(s):  
Literature Review ◽  
Product Design ◽  
Design Process ◽  
Game Design ◽  
Process Model ◽  
Health Effect ◽  
Stakeholder Involvement ◽  
Problem Definition ◽  
Health It ◽  
Design Process Model

Personalization, the involvement of stakeholders in the design process, is often applied in serious game design for health. It is expected to enhance the alignment of a game to the preferences and capacities of the end-user, thereby increasing the end-user’s motivation to interact with the game, which finally might enhance the aimed-for health effects of the game. However, the nature and effect of personalization have never been systematically studied, making assumptions regarding personalization ungrounded. In this literature review, we firstly provide a proposal of our Personalized Design Process-model, where personalization is defined as stakeholder involvement in the Problem Definition-, Product Design- and/or Tailoring Phase. Secondly, we conducted a systematic literature review on this model, focusing on health and its effects. In this review, 62 of the 2579 found studies were included. Analysis showed that a minority of the studies were of methodologically higher quality and some of these tested the health effect by contrasting tailored versus non-tailored games. Most studies involved stakeholders in the Tailoring Design Phase. Therefore, we conclude that involving stakeholders in the Tailoring Phase is valuable. However, to know if personalization is effective in the Product Design- and the Problem Definition Phase, more studies are needed.

A Design Process Model That Unifies General Design Theory and Empirical Findings

1995 ◽  
Author(s):  
Tetsuo Tomiyama
Keyword(s):  
Design Process ◽  
Design Theory ◽  
Process Model ◽  
Theoretical Work ◽  
Process Models ◽  
General Design ◽  
Cad System ◽  
Design Process Model ◽  
Theoretical Results ◽  
Design Experiments

Abstract This paper proposes a new design process model that unifies theoretical results of General Design Theory (GDT) and empirical findings obtained from design experiments. It first reviews the design process models that were developed within theoretical work on GDT. Then, we describe experimental work on design based on protocol analysis, which resulted in a cognitive design process model from which further a computable design process model was derived. While these experimental results are supposed to support the theoretical conclusions obtained from GDT, we could also find out incompatibilities. We then propose a new design process model, called the refinement design process model, that can unify both theoretical results of GDT and experimental finding obtained from design experiments. The refinement model has better agreements with experimental findings and suggests various issues as a guiding principle to develop a future, advanced CAD system that helps a designer to focus on functional information. We propose and illustrate the concepts of such an advanced CAD system equipped with intensive design knowledge, called a computational framework for knowledge intensive engineering.

Instructional Re-design for an Active Flipped Classroom

2016 ◽  
pp. 91-105
Author(s):  
Kim A. Hosler
Keyword(s):  
Instructional Design ◽  
Design Process ◽  
Flipped Classroom ◽  
Process Model ◽  
Course Design ◽  
Design Principles ◽  
Instructional Design Process ◽  
Flipped Classrooms ◽  
Design Process Model ◽  
Evidenced Based

The purpose of this chapter is to present and discuss the instructional design process model -- ADDIE, and nine flipped course design principles, which when used in parallel, offer a means to support the development and implementation of a hybrid or flipped classroom. Discussion of the pedagogical terms hybrid, blended, flipped classrooms, and active learning, are followed by an overview of the instructional design process model ADDIE, along with evidenced-based flipped classroom design principles. A partial example of how these two frameworks may be applied to the re-design of a fully online course into a flipped or hybrid course is demonstrated, and emergent design-consideration questions are offered.

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