نتایج جستجو برای: truss
تعداد نتایج: 2531 فیلتر نتایج به سال:
Multibody dynamic simulations are performed for a large deployable space structure using ®nite element models and an explicit temporal integration procedure. The structure considered is NASA's light-weight, 8 m-aperture next generation space telescope (NGST). The NGST structure consists of beam components (modeled using beam ``super-elements'', each composed of two truss elements and a torsiona...
Strauss, R. E., and F. L. Bookstein (Museum of Zoology, The University of Michigan, Ann Arbor, Michigan 48109) 1982. The truss: body form reconstruction in morphometrics. Syst. Zool., 31:113-135.-In principle, any measured distances between landmarks of a form may serve as characters for morphometric analyses. Systematic studies typically are based on a highly biased and repetitious sample of t...
Different methods are available for simultaneous optimization of cross-section, topology and geometry of truss structures. Since the search space for this problem is very large, the probability of falling in local optimum is considerably high. On the other hand, different types of design variables (continuous and discrete) lead to some difficulties in the process of optimization. In this articl...
زمینه و هدف: در این پژوهش ساختار مورفولوژیک جمعیتی ماهی سفید (rutilus frisii kutum kamenskii, 1901) در سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا با استفاده از truss network system مورد بررسی قرار گرفت. روش بررسی: به این منظور تعداد 315 عدد ماهی سفید طی فصل صید ماهیان استخوانی دریای خزر در سال 87-1386 از سواحل جنوب غربی دریای خزر ناحیه بندرکیاشهر و بندرآستارا به ترتیب توسط شرکت های...
In the present study, the computational performance of the particle swarm optimization (PSO) harmony search (HS) and firefly algorithm (FA), as popular metaheuristics, is investigated for size and shape optimization of truss structures. The PSO was inspired by the social behavior of organisms such as bird flocking. The HS imitates the musical performance process which takes place when a musicia...
In this paper, an efficient technique is presented for static analysis of tall buildings with combined tube-in-tube and outrigger-belt truss system while considering shear lag effects. In the process of replacing the discrete structure with an elastically equivalent continuous one, the structure is modeled as two parallel cantilevered flexural-shear beams that are constrained at the outrigger-b...
Article describes modeling processes influencing the lines in rods load truss of bridge crane Mathcad system: for top belt a truss; bottom diagonal and vertical at various section algorithm program complex automation graphical representation influence maximum their values. The proposed procedures any make it possible to reduce time cost these calculations’ performance least ten times carry out ...
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