Search Results - "Sunao TOMITA"

Elastic metamaterial composite made of molded pulp and steel for suppression of low-frequency vibration in thin-plate structures by Tomita, Sunao, Nakano, Sachito, Segi, Makoto, Nishimura, Takuya

“…[Display omitted] •Elastic metamaterial composite is proposed using plant-based materials.•Periodic convex shapes of molded pulp form band gaps in…”
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Elastic wave attenuation in a metaplate with periodic hollow shapes for vibration suppression by Tomita, Sunao, Nishigaki, Hidekazu, Omote, Ryuji

“…Low noise and vibrations are requirements for engineering structures to realize comfort and ensure systems are environmental friendly. Periodic structures such…”
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Operational modal analysis of under-determined system based on Bayesian CP decomposition (Translated) by TOMITA, Sunao, JIMBO, Tomohiko

“…Modal parameters such as natural frequencies, modal shapes, and the damping ratio are useful to understand structural dynamics of mechanical systems. Modal…”
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Origami-inspired metamaterials with switchable energy absorption based on bifurcated motions of a Tachi-Miura polyhedron by Tomita, Sunao, Shimanuki, Kento, Nishigaki, Hidekazu, Oyama, Shin, Sasagawa, Takashi, Murai, Daisuke, Umemoto, Kazuhiko

“…[Display omitted] •Bifurcation of motions in a Tachi-Miura polyhedron provides significant tailoring energy absorption.•A Tachi-Miura polyhedron with both…”
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Numerical estimation of the influence of joint stiffness on free vibrations of frame structures via the scattering of waves at elastic joints by Tomita, Sunao, Nakano, Sachito, Sugiura, Hideki, Matsumura, Yuichi

“…In the structural design of mechanical products, natural frequencies must be controlled to reduce noise and vibration. In particular, the stiffness of the…”
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Transition of deformation modes from bending to auxetic compression in origami-based metamaterials for head protection from impact by Tomita, Sunao, Shimanuki, Kento, Oyama, Shin, Nishigaki, Hidekazu, Nakagawa, Toshiaki, Tsutsui, Masakazu, Emura, Youhei, Chino, Masahiko, Tanaka, Hirokazu, Itou, Yoshinobu, Umemoto, Kazuhiko

“…For the protection of the human head by energy absorption structures, a soft mechanical response upon contact with the head is required to mitigate the effect…”
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Operational modal analysis of under-determined system based on Bayesian CP decomposition by TOMITA, Sunao, JIMBO, Tomohiko

“…Modal properties such as natural frequencies, modal shapes and damping ratio are useful to understand structural dynamics of mechanical systems. To use the…”
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Reduction of ear-position sound pressure at low speed in electric vehicles by pulp mold by NAKANO, Sachito, TOMITA, Sunao, SEGI, Makoto, NISHIMURA, Takuya

“…Electric vehicles (EVs) generate different cabin noise from internal combustion engine vehicles (ICE) during low-speed driving. In order to identify the cause…”
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Oxidative stress in patients with clinically mild encephalitis/encephalopathy with a reversible splenial lesion (MERS) by Miyata, Rie, Tanuma, Naoyuki, Hayashi, Masaharu, Imamura, Takuji, Takanashi, Jun-ichi, Nagata, Rieko, Okumura, Akihisa, Kashii, Hirohumi, Tomita, Sunao, Kumada, Satoko, Kubota, Masaya

“…Abstract We examined oxidative stress markers, tau protein and cytokines in the cerebrospinal fluid (CSF) in six patients with clinically mild…”
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Manufacture of multi-mass dynamic vibration absorber using particle dampers by selective laser melting and evaluation of vibration damping performance by MASUTANI, Takashi, NAKANO, Sachito, TOMITA, Sunao, HARA, Masashi, SATO, Haruki

“…Selective laser melting (SLM) has been used to fabricate lightweight and complicated structures. Lightweight structures tend to suffer from noise and vibration…”
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Damping properties and optical observation of particles behavior in particle dampers with particle diameters of sub-mm or less (The case of gravity direction vibration) by MASUTANI, Takashi, TOMITA, Sunao, SATO, Haruki, NAKANO, Sachito

“…Particle dampers (PD) can be embedded in structures fabricated via selective laser melting (SLM) because the raw powder (particle diameter : several tens of…”
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Nodal position control of bending mode of three- dimensional beam structures based on visualization of eigenmode formation by Sunao TOMITA, Sachito NAKANO, Hideki SUGIURA, Yuichi MATSUMURA

“…In a conceptual design phase of noise and vibration performance, CAE (Computer Aided Engineering) is frequently introduced to design appropriate properties of…”
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Locally resonant metamaterials damped by particles embedded through additive manufacturing by Tomita, Sunao, Masutani, Takashi, Sato, Haruki

“…Damping properties in elastic metamaterials are essential for enhancing vibration suppression within frequency ranges known as bandgaps. However, fabricating…”
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Operational modal analysis of under-determined system based on Bayesian CP decomposition (Translated) by TOMITA, Sunao, JIMBO, Tomohiko

“…Modal parameters such as natural frequencies, modal shapes, and the damping ratio are useful to understand structural dynamics of mechanical systems. Modal…”
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Stiff deployable structures via coupling of thick Miura-ori tubes along creases by Tomita, Sunao, Shimanuki, Kento, Umemoto, Kazuhiko, Kawamoto, Atsushi, Nomura, Tsuyoshi, Tachi, Tomohiro

“…Origami-based structures are crucial to attaining deployable mechanisms and unique mechanical properties via programmable deformation by folding. Among…”
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Damping properties and optical observation of particles behavior in particle dampers with particle diameters of sub-mm or less (The case of gravity direction vibration) by MASUTANI, Takashi, TOMITA, Sunao, SATO, Haruki, NAKANO, Sachito

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Optimization of vehicle horn placement based on a one-dimensional standing-wave model by Tomita, Sunao, Aoyama, Takayuki, Omote, Ryuji, Nishigaki, Hidekazu, Nagakusa, Yoshitaka, Kubota, Kazuki, Yamada, Atsushi

“…Vehicle horns must satisfy sound pressure level regulations in each country. Therefore, it is essential to optimize the horn location inside the front grille…”
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Operational modal analysis of under-determined system based on Bayesian CP decomposition by Tomita, Sunao, Jimbo, Tomohiko

“…Modal parameters such as natural frequencies, modal shapes, and the damping ratio are useful to understand structural dynamics of mechanical systems. Modal…”
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Numerical simulations of magnetic resonance elastography using finite element analysis with a linear heterogeneous viscoelastic model by Tomita, Sunao, Suzuki, Hayato, Kajiwara, Itsuro, Nakamura, Gen, Jiang, Yu, Suga, Mikio, Obata, Takayuki, Tadano, Shigeru

“…Magnetic resonance elastography (MRE) is a technique to identify the viscoelastic moduli of biological tissues by solving the inverse problem from the…”
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Stiff deployable structures via coupling of thick Miura-ori tubes along creases by Tomita, Sunao, Shimanuki, Kento, Umemoto, Kazuhiko, Kawamoto, Atsushi, Nomura, Tsuyoshi, Tachi, Tomohiro

“…Origami-based structures play an important role in the realization of deployable mechanisms and unique mechanical properties via programmable deformation by…”
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