دانلود رایگان مقاله لاتین بهینه سازی خرپا از سایت الزویر
عنوان فارسی مقاله:
بهینه سازی خرپا-Z چند شاخه بر اساس استراتژی تکامل
عنوان انگلیسی مقاله:
Optimization of Multi-branch Truss-Z based on evolution strategy
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
A stairway is the most common means of pedestrian vertical transportation used in the built environment. Elevators and escalators are relatively expensive to install and maintain, and their traffic flow capacity is much lower than that of stairs. Moreover, it is not always possible to install an elevator or escalator due to limited space. However, most people occasionally or temporarily cannot use stairs, as when riding a bicycle, pushing a baby stroller or carrying heavy luggage. For elders and people in wheelchairs, stairs form a permanent and impassable barrier. This is an important social issue, especially since the proportion of elderly people in society is higher than in the past, and some predict that this tendency will continue [1]. A comprehensive literature review for elderly pedestrians is carried out in [2]. Truss-Z (TZ) is a modular skeletal system for creating free-form ramps and ramp networks among any number of terminals in space. The concept has been introduced in [3]. The motivation for TZ in the context of human mobility, and in particular – the mobility problems of elders is discussed in [4]. The underlying idea of this system is to create structurally sound provisional or permanent structures using the minimal number of types of modular elements. Further discussion on modularity vs. free-form can be found in [5].In principle, TZ connects two points in space, called terminals. Multi-branch Truss-Z (MTZ) is a system of connected TZ paths linking more than two terminals. Constructing an efficient MTZ layout can be formally expressed as a constrained discrete multi-criterial optimization problem. Usually, it is specifically a minimization, where: the number of modules and junction points, network distance, etc. are to be minimal. Common constraints are: the locations of terminals, positions and shapes of obstacles in the given environment, maximal allowable unsupported spans, etc. MTZ has been already introduced together with TZ in [3]. The pioneering methods laconically outlined there, were derived directly from single TZ path mathematical modeling. This paper presents new and “organic” formulation of MTZ. It allows for incomparably more effi- cient work, including MTZ optimization. The novel approach is particularly suited for evolutionary computation. This paper is organized as follows: after general introduction, the concept of single path TZ is explained. Its purposefulness is illustrated with basic ramp configurations and proposed solution for a real-life retrofitting case. Second section also briefly reports the fabrication of reduction scale models of TZ. Third section describes a possible scenario where six terminals at different elevations are to be connected by a system of pedestrian ramps. Fourth section introduces nature-inspired nomenclature for MTZ and its novel encoding. Fifth section introduces transformation operators and illustrates them with transformation of one arbitrary MTZ to another. Sixth section shows that these transformations allow for effective exploration of the solution space. Finally, seventh section presents an application of evolution strategy-based algorithm which
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کلمات کلیدی:
Optimization of Multi-branch Truss-Z based on ... - ScienceDirect www.sciencedirect.com/science/article/pii/S0965997816301983 by M Zawidzki - 2016 - Related articles This paper concerns multi-branch Truss-Z networks (MTZ). A possible scenario for creating a “multi-branch bridge” linking 6 terminals of pedestrian and cycl. Multi-branch Truss-Z (MTZ) - Springer link.springer.com/chapter/10.1007%2F978-981-10-1109-2_8 by M Zawidzki - 2017 - Related articles Jul 22, 2016 - Next, the optimization method based on Evolution Strategy is described ... Truss-Z Multi-branch Junction unit Backtracking Evolution strategy ... Optimization of Multi-branch Truss-Z based on ... - ResearchGate https://www.researchgate.net/.../305845136_Optimization_of_Multi-branch_Truss-Z_ba... Oct 16, 2016 - This paper concerns multi-branch Truss-Z networks (MTZ). A possible scenario for creating a “multi-branch bridge” linking 6 terminals of ... Multi-branch Truss-Z (MTZ) - ResearchGate https://www.researchgate.net/publication/305524573_Multi-branch_Truss-Z_MTZ Multi-branch Truss-Z (MTZ). Chapter · January 2017 with 1 Reads. DOI: 10.1007/978-981-10-1109-2_8. In book: Discrete Optimization in Architecture, pp.105- ... [PDF]Optimization of Multi-branch Truss-Z based on evolution strategy iranarze.ir/wp-content/uploads/2016/10/E1065.pdf Sep 20, 2011 - Discrete layout optimization. a b s t r a c t. This paper concerns multi-branch Truss-Z networks (MTZ). A possible scenario for creating a “multi-. Discrete Optimization in Architecture: Extremely Modular Systems https://books.google.com/books?isbn=9811011095 Machi Zawidzki - 2016 - Technology & Engineering Michalewicz Z (2013) Genetic algorithms + data structures = evolution programs. ... an interactive demonstration Chapter 8 Multi-branch Truss-Z (MTZ) Abstract ...
