Optimum Design of Castellated Beams Using the Tug of War Algorithm

This paper presents a practical methodology developed for shape optimization studies of hydraulic structures using environmental numerical modelling codes. The methodology starts by defining the optimization problem and identifying relevant problem constraints. Design variables in shape optimization studies are configuration of structures (such as length or spacing of groins, orientation and layout of breakwaters, etc.) whose optimal orientation is not known a priori. The optimization problem is solved numerically by coupling an optimization algorithm to a numerical model. The coupled system is able to define, test and evaluate a multitude of new shapes, which are internally generated and then simulated using a numerical model. The developed methodology is tested using an example of an optimum design of a fish passage, where the design variables are the length and the position of slots. In this paper an objective function is defined where a target is specified and the numerical optimizer is asked to retrieve the target solution. Such a definition of the objective function is used to validate the developed tool chain. This work uses the numerical model TELEMAC- 2Dfrom the TELEMAC-MASCARET suite of numerical solvers for the solution of shallow water equations, coupled with various numerical optimization algorithms available in the literature.

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Analisis Kegagalan Boom Crane dan Pencegahannya

Jurnal Ilmiah Poli Rekayasa ◽

10.30630/jipr.10.1.54 ◽

2014 ◽

Vol 10 (1) ◽

pp. 19

Author(s):

Elvis Adril ◽

Nasirwan - ◽

Tri Wibowo ◽

Julnaidi -

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Chemical Composition ◽

Optimum Design ◽

Root Cause ◽

Main Equipment ◽

Hardness Tests ◽

Photo Documentation ◽

Crawler Crane ◽

Boom Crane

Sleeve (Boom) on Crawler Crane is the main equipment that serves the weight at the time of appointment (Hoisting).The problem which is founded is a fracture at the boom while lift 6 Tons of weight while the optimum design of equipment is 50 tons. The aim of this research is to found the root cause of the fracture by using photo documentation fractografi (microfractografi and macrofractografi), and hardness tests, and test the chemical composition at the surface faults boom crane. We used Finite element method (FEM) to form simulated load. The results is that the porblem accured because of error while read the load chart and error in SOP

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Optimum Design of Closed-loop Macro Diversity Scheme for Cooperative Base Stations

JOURNAL OF ELECTRONICS INFORMATION TECHNOLOGY ◽

10.3724/sp.j.1146.2010.01117 ◽

2011 ◽

Vol 33 (6) ◽

pp. 1350-1355

Author(s):

Ying-quan Zou ◽

Chun-guo Li ◽

Lu-xi Yang

Keyword(s):

Optimum Design ◽

Closed Loop ◽

Base Stations ◽

Diversity Scheme

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