Deterministic computer-aided optimum design of rock rubble-mound breakwater cross-sections

1991 ◽  
Vol 15 (1-2) ◽  
pp. 3-19 ◽  
Author(s):  
Wiebe de Haan
Keyword(s):  
Optimum Design ◽  
Cross Sections ◽  
Computer Aided ◽  
Rubble Mound

scholarly journals RELIABILITY BASED DESIGN OF RUBBLE-MOUND BREAKWATER

1988 ◽  
Vol 1 (21) ◽  
pp. 153
Author(s):  
Masato Yamamoto ◽  
Kazumasa Mizumura ◽  
Taiji Endo ◽  
Naofumi Shiraishi
Keyword(s):  
Water Level ◽  
Optimum Design ◽  
Failure Probability ◽  
Design Methodology ◽  
Construction Cost ◽  
Probabilistic Design ◽  
Reliability Based Design ◽  
Rubble Mound ◽  
Reduced Risk

The object of this present research is to study probabilistic design of armor blocks protecting composite breakwaters and to produce optimum design methodology for S-shaped breakwaters in terms of failure probability and construction cost. Failure probability in the vicinity of the still water level is greatest in the case of uniform sloped breakwaters. Therefore,S-shaped breakwaters of which the slope near the still water level is milder have a reduced risk of damage compared to uniform sloped ones. The optimum design index presents good economics and reliability in rubble-mound breakwater design.

Surface Wetting Through Capillary Grooves

1970 ◽  
Vol 92 (1) ◽  
pp. 126-132 ◽  
Author(s):  
R. G. Bressler ◽  
P. W. Wyatt
Keyword(s):  
Heat Transfer ◽  
Thermal Resistance ◽  
Optimum Design ◽  
Cross Sections ◽  
Numerical Evaluation ◽  
Transfer Mechanism ◽  
Heat Transfer Mechanism ◽  
Surface Wetting ◽  
Transfer Rates ◽  
Linearized Equations

The effects of capillary grooves on surface wetting and evaporation have been analysed. An attempt has been made to obtain expressions which approximately describe the increase in heat transfer in order to select for given properties and temperature differences a groove of optimum design. For this purpose, it is assumed that the heat transfer mechanism is determined by thermal resistance of the liquid layers inside the grooves. From a numerical evaluation of linearized equations, heat transfer rates have been computed for grooves with triangular, semicircular, and square cross sections.

Computer aided manufacturing and design of fixed bridges restoring the lost dentition, soft tissue and the bone

2016 ◽  
Vol 81 (2) ◽  
pp. 68-75 ◽  
Author(s):  
P. Malara ◽  
L.B. Dobrzański
Keyword(s):  
Surgical Treatment ◽  
Oral Cavity ◽  
Cross Sections ◽  
Missing Teeth ◽  
All Ceramic ◽  
Hard Tissues ◽  
Computer Aided ◽  
Cad Cam ◽  
Technical Production ◽  
Design And Manufacture

Purpose: The aim of the paper is to present the methodology of computer aided designingand manufacturing of an all-ceramic multi-unit bridge restoring missing teeth and the lostsoft and hard tissues of the oral cavity as a result of surgical treatment of oral tumor.Design/methodology/approach: The methodology of computer aided designing andmanufacturing of the multi-unit all-ceramic bridge was presented on the basis of an actualclinical case of a patient who underwent the surgical treatment of myxoma of the oral cavity.All the steps of clinical and technical production of the bridge were described and illustrated.Findings: It is possible to use the CAD/CAM technology to design and manufactureall-ceramic multi-unit bridges restoring missing teeth and the lost soft and hard tissues ofthe oral cavity. The design of the bridge must be clinically validated using mock-ups and onlythen can be implemented for the CAM software.Practical implications: Thanks to the method of designing and manufacturing of multiunitall-ceramic bridges for patients with significant lost of the soft and hard tissues of themouth it is possible to carry out a prosthetic rehabilitation of patients after trauma and tumorsurgery.Originality/value: : The execution of extensive bridges with the maximum available heightof about 25 mm requires a high technological rigor at the design and manufacture stage. Toensure longevity of the reconstruction, it is necessary to plan all the work while maintainingthe maximum thickness of the substructure. It is desirable to provide minimum of 2 mmthick substructure and the surface of at least 20 mm2 or more in the cross-sections. At thesame time, the structure of the bridge must be supported on the alveolar ridge to provideaesthetics and endurance.

scholarly journals Challenges Faced While Designing Body in White

2021 ◽  
Vol 9 (9) ◽  
pp. 49-56
Author(s):  
Aditya Dhobale
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cross Section ◽  
Cross Sections ◽  
Element Analysis ◽  
Computer Aided ◽  
Safety Parameters ◽  
Body In White ◽  
White Sheet ◽  
Metal Design

Abstract: Construction of Body in White (BiW) revolves around plenty of challenges. Ranging from BiW fixtures to curbing weight of Body in White sheet metal design. This paper discusses about all the design aspects in BiW manufacturing in automobile and confronting challenges that occurs. At present, lots of existing theories are being applied and efforts to improve the same are being made. This paper provides a path on how components can be developed and make necessary improvements. CAE (Computer Aided Engineering) tools have been used for FEA (Finite Element Analysis) and also an example of stress analysis of automotive chassis is given. An outcome depending on behaviour of loads acting on frame is drawn. The importance of hollow tubes, tubes of different- cross sections to counter weight and ease the designing of BiW frame have been proposed. This paper also provides insight on safety parameters with current construction of tubular frame chassis. Other solutions such as hybrid tubes, foam padding and plastic trim have been pointed out in this paper. Keywords: CAE, FEA, manufacturing, loads, tubes, cycle-time, cross-section.

scholarly journals Lateral and Overturning Resistance of Wind Turbine Foundations Reinforced with Piles on Bedrock by Modelling Experiments

2021 ◽  
Vol 9 (9) ◽  
pp. 919
Author(s):  
Gichun Kang ◽  
Seong-Kyu Yun ◽  
Tae-Hyung Kim ◽  
Jiseong Kim
Keyword(s):  
Wind Turbine ◽  
Cross Sections ◽  
Boundary Surface ◽  
Bending Moment ◽  
Vertical Displacement ◽  
Cross Sectional ◽  
Right Hand ◽  
Lateral Resistance ◽  
Rubble Mound ◽  
The Right

This study evaluated the lateral and overturning resistance of wind turbine foundations reinforced with piles on bedrock through model experiments. In particular, changes in lateral and overturning resistance of wind turbine foundations were analyzed according to cross-sectional size and the presence of piles of wind turbine foundations. As a result, by reducing the cross-section, the lateral resistance of the pile-reinforced wind turbine foundation was compared to the existing wind turbine foundation with large cross-sections and was shown to be 1.68 times greater. In the case of vertical displacements affecting overturning, the safety of overturning was also greater, as the vertical displacement of the pile-reinforced wind turbine foundation was 36% smaller than the existing wind turbine foundation. As a result of the unidirectional cyclic load on a pile-reinforced wind turbine foundation, lateral resistance value was similar to that of the static load in target displacement value, and it showed that the elastic resilience was very large due to pile reinforcement. According to the bending moment measurement of piles embedded in wind turbine foundations and bedrock, bending moments were large in the order of the front row, the right-hand row, and the back row, while the maximum bending moment generation was found on the boundary surface of the wind turbine foundation and the rubble mound layer for the front row, as well as on the boundary surface of the rubble mound layer and bedrock for the right-hand row and back row.

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