scholarly journals Refinement of acoustic ship design methods

2018 ◽  
Vol 3 (385) ◽  
pp. 131-144
Author(s):  
V. Savenko ◽  
Keyword(s):  
Teknomekanik ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 24-28
Author(s):  
Ar Trisyaldi ◽  
Purwantono Purwantono ◽  
Waskito Waskito ◽  
Primawati Primawati ◽  
Syahril Syahril

Maninjau lake uses ships designed in a simple way without significant innovation from time to time. This case is caused by design methods that are based on hereditary knowledge from  generations to generations, so that the ships that are made tend to have the same shape and size. Innovation is needed to get a higher level of efficiency and effectiveness on a ship. The innovation that needs to be done is the design of ships with a multi-hull shape or catamaran. The pre-design of the catamaran hull is based on using the comparation method as the dimension ratio of the ship, so that the dimensions of the ship are LWL = 4 m; LPP = 3.96 m; B = 1.7 m; B1 = 0.36 m; D = 0.7 m; d = 0.307 m. After that, testing the resistance (resistance) while determining the amount of Power needed. The next step is to analyze Stability and Seakeeping to determine the efficiency and effectiveness of the hull type. Analysis carried out on this type of hull was applied to several models, then the best hull design was found. Each design is distinguished by hull shape, but has the same displacement which is equal to 0.448 tons. The first model of the catamaran hull with the type of Flat Inside Symmetry; second with the type of symmetry Flat Outside; and the third type with gastric Asymmetry.


2020 ◽  
Vol S-I (2) ◽  
pp. 83-88
Author(s):  
G. Kryzhevich ◽  
◽  
E. Norkov ◽  
A. Filatov ◽  
◽  
...  

Based on the previously developed approach to structural ship design, the authors optimize a large-span deck grillage taking into account several design loading scenarios. Topological optimization made it possible to find an optimal structural layout of the grillage, and parametric optimization yielded the scantlings of beams and simultaneously reduced grillage weight. Additional gain in structural weight was achieved by means of the openings in beam webs.


2021 ◽  
Vol 2 (396) ◽  
pp. 85-92
Author(s):  
G. Kryzhevich ◽  
◽  
A. Pravdin ◽  

Object and purpose of research. The object of the study is wave-piercing passenger catamarans made of aluminum alloys. The purpose of the study is to find ways and means to improve the design of the bow ends of the catamaran hulls, reduce the complexity of their manufacture and ensure operational safety. Materials and methods. The study is based on the use of ship design methods and numerical calculation methods to predict fatigue strength. Main results. The paper proposes new design and technological solutions for the bow ends of the catamaran hulls, which ensure their high operational safety and reduced manufacturing cost. Conclusion. The results of the research can be used in the rational design of high-performance passenger catamarans.


Author(s):  
Silvia PIZZOCARO ◽  
Pınar KAYGAN ◽  
HARMAN Kerry ◽  
Erik BOHEMIA

Co-design is a process in which designers and users collaborate as ‘equals’ to develop innovative solutions. Co-design methods are increasingly used by professional designers to facilitate and enable users to co-develop innovative solutions for ‘themselves’. For example, the Design Council is advocating the use of co-design methods to support the development of practical innovative solutions to social problems such as increased cost of elderly care and tackling child poverty. The involvement of users in developing solutions acknowledges that their take up is dependent on the ways users create and negotiate meanings of objects and services.


Author(s):  
Federico VAZ ◽  
Sharon PRENDEVILLE

Described as units developing public policies in a design-oriented manner, Policy Labs are tasked to innovate to gain in policy effectiveness and efficiency. However, as public policymaking is a context-dependent activity, the way in which these novel organisations operate significantly differs. This study discusses the emergence of design approaches for policy innovation. The purpose is to map how Policy Labs in Europe introduce design approaches at distinct stages of the policymaking cycle. For this study, 30 organisations in Europe operating at various levels of government were surveyed. Based on the public policymaking process model, it investigates which design methods are Policy Labs deploying to innovate public policies. The study exposed a gap in the awareness of the utilised methods' nature. It also showed that the use of design methods is of less importance than the introduction of design mindsets for public policy innovation, namely ‘user-centredness’, ‘co-creation’, and ‘exploration’.


PCI Journal ◽  
1959 ◽  
Vol 4 (4) ◽  
pp. 31-42
Author(s):  
H. Rusch
Keyword(s):  

Author(s):  
Hiroaki YOSHIDA ◽  
Masayuki WAKIZAKA ◽  
Shigeru YAMASHITA ◽  
Masahiro FUJITA

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