Results 1 to 10 of about 232,670 (249)

Nuclear level density in the statistical semiclassical micro-macroscopic approach [PDF]

Ядерна фізика та енергетика, 2023
Level density ρ is derived for a finite system with strongly interacting nucleons at a given energy E, neutron N, and proton Z particle numbers, projection of the angular momentum M, and other integrals of motion, within the semiclassical periodic-orbit ...
A. G. Magner, A. I. Sanzhur, S. N. Fedotkin, A. I. Levon, U. V. Grygoriev, S. Shlomo   +5 more
doaj   +1 more source

Repowering Steel Tubular Wind Turbine Towers Enhancing them by Internal Stiffening Rings

Energies, 2020
This paper presents a robust repowering approach to the structural response of tubular steel wind turbine towers enhanced by internal stiffening rings.
Yu Hu, Jian Yang, Charalampos Baniotopoulos   +2 more
doaj   +1 more source

Buckling Analysis for Wind Turbine Tower Design: Thrust Load versus Compression Load Based on Energy Method

Energies, 2020
Tubular steel towers are the most common design solution for supporting medium-to-high-rise wind turbines. Notwithstanding, historical failure incidence records reveal buckling modes as a common type of failure of shell structures.
Yang Ma, Pedro Martinez-Vazquez, Charalampos Baniotopoulos   +2 more
doaj   +1 more source

A New Marine Biomaterial: The Shell of Mangrove Horseshoe Crabs, Carcinoscorpius rotundicauda (Latreille, 1802) Emphasizing Its Physico-Chemical Characteristics

Frontiers in Marine Science, 2021
The paper aims to elucidate the physico-chemical characteristics of the shell of mangrove horseshoe crabs (Carcinoscorpius rotundicauda) and determine the compilation matrix for the first time. The shell composition matrix of C.
Yusli Wardiatno, Yusli Wardiatno, Yusli Wardiatno, Bambang Riyanto, Nopa Aris Iskandar, Sonja Kleinertz, Sonja Kleinertz, Peter Funch, Fery Kurniawan, Fery Kurniawan   +9 more
doaj   +1 more source

Influence of the concrete strength and the type of supports on the stress-strain state of a hyperbolic paraboloid shell footbridge structure

Structural Mechanics of Engineering Constructions and Buildings, 2021
Relevance. This work is the first in a series of publications on the selection of a suitable analytical surface for implementation as a self-supporting structure for a thin shell footbridge.
David Cajamarca-Zuniga, Sebastian Luna
doaj   +1 more source

Modeling of plate structures for Galerkin meshfree methods (2nd report: Geometrical non-linear analysis)

Nihon Kikai Gakkai ronbunshu, 2015
In 1st report, the authors presented Galerkin-based meshfree modeling for folded plate structures. A flat shell formulation was developed including drilling rotation components, and multiple point constraint technique was introduced to model the folded ...
Shota SADAMOTO, Ken-ichiro YOSHIDA, Satoyuki TANAKA   +2 more
doaj   +1 more source

Multi-objective optimization for snap-through deformation of bi-stable composite shell

Nihon Kikai Gakkai ronbunshu, 2015
During fabrication process of laminated fibrous composites, asymmetric laminates result in skewed surfaces after curing due to strong anisotropy of each layer, and composites with specific lay-ups and dimensions show bi-stable states in terms of surface ...
Shinya HONDA, Keisuke TAKAHASHI, Yoshihiro NARITA   +2 more
doaj   +1 more source

Material-orientation optimization for tailoring thermal deformation of laminated composite shell structures using a parameter-free approach

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
In this study, we present a material-orientation optimization method for tailoring the thermal displacements of laminated composite shell structures to required target values.
Masatoshi SHIMODA, Yoshiaki MURAMATSU, Motoki UMEMURA   +2 more
doaj   +1 more source

Limitation of estimation method of current density between battery electrodes by inverse analysis of noisy magnetic field

Mechanical Engineering Journal, 2017
A high capacitance battery such as a lithium-ion battery is fabricated by interlaminating electrodes and separators. Since the strength of the separator is relatively low, many situations exist where damage in the separator sheet induces an initiation of
Yoshinao KISHIMOTO, Yukiyoshi KOBAYASHI, Toshihisa OHTSUKA, Takahito TOGO   +3 more
doaj   +1 more source

Closed-form solutions of thin anisotropic cylinders under torsion, axial compression and combined load

Nihon Kikai Gakkai ronbunshu, 2014
The major aim of this paper is to derive simple closed-form solutions which can be easily calculated using spreadsheet software, for thin anisotropic cylinders under torsion, axial compression and combined loads that include the effect of layup ...
Atsushi TAKANO
doaj   +1 more source