Faculty Profiles - ISHIHARA Daisuke

Papers - ISHIHARA Daisuke

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Solid piezoelectric - shell inverse piezoelectric partitioned analysis method for thin piezoelectric bimorph with conductor layers Reviewed

TAKATA Rei, ISHIHARA Daisuke, Ramegowda Prakasha Chigahalli, NIHO Tomoya, HORIE Tomoyoshi

Transactions of the Japan Society for Computational Engineering and Science ( JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE ) 2019 ( 0 ) 20190011 - 20190011 2019.01

Authorship：Corresponding author Language：English Publishing type：Research paper (scientific journal)

Piezoelectric bimorph for actuators and sensors is usually thin and includes conductor layers such as the electrode and the shim plate. Therefore, this study deals with the coupled piezoelectric and inverse-piezoelectric analysis of thin piezoelectric bimorph with the conductor layers. Solid elements can describe the various types of distributions of electric potential along the thickness, while shell elements are more appropriate to analyze the thin structures. Therefore, instead of using piezoelectric solid elements or piezoelectric shell elements for both the piezoelectric and inverse-piezoelectric analyses, the solid and shell elements are used to simulate the electrical and structural fields, respectively. The coupled algorithm is based on the block Gauss-Seidel method and the transformation method between the solid and shell variables. In the structural analysis, the rule of mixtures for the bending rigidity and the mass is used. A pseudo-piezoelectric evaluation method for the conductor is proposed in order to use the existing programs for the piezoelectric and inverse-piezoelectric analyses without any modification. Finally, it is demonstrated that the proposed method shows very accurate potential distributions in the actuator and sensor modes of the thin piezoelectric bimorph with the conductor layers.

DOI： 10.11421/jsces.2019.20190011

Kyutacar

Scopus

CiNii Article

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85068835345&origin=inward

Partitioned method of insect flapping flight for maneuvering analysis Reviewed

Onishi M., Ishihara D.

CMES - Computer Modeling in Engineering and Sciences 121 ( 1 ) 145 - 175 2019.01

Finite element modeling of flexible piezoelectric energy harvester operating in air

RAMEGOWDA Prakasha Chigahalli, ISHIHARA Daisuke, TAKATA Rei, NIHO Tomoya, HORIE Tomoyoshi

計算力学講演会講演論文集 ( 一般社団法人日本機械学会 ) 2019 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

Piezoelectric energy harvesting from the mechanical vibrations has attracted considerable research interest in the last decade. This work presents a finite element modeling of forced vibration of flexible piezoelectric devices (FPED). The successful design of the FPED depends on the identification of the optimal geometry, material configurations, and loading conditions to achieve maximum power efficiency at a specific band of excitation frequencies. A piezoelectric energy harvesting (PEH) process from the mechanical vibration takes the form of two-way coupling between piezoelectric and inverse piezoelectric effect, while the piezoelectric energy harvesting from the ocean waves takes the form of three-way coupling between fluid, piezoelectric, and inverse piezoelectric effects. There are some experimental and theoretical studies about piezoelectric energy harvesting from the mechanical vibrations as-well as ocean waves in literature. Meantime, performing design optimization via experimental studies is very expensive. An accurate FE modeling of the coupling effects between the fluid, piezoelectric, and inverse piezoelectric effect will reduce the cost-effective design optimization and increase the energy efficiency of the PEH. In the present study, the FE analysis of FEPD is presented. The result obtained with the FE model is compared with the experimental model reported in the literature.

DOI： 10.1299/jsmecmd.2019.32.279

CiNii Article

Other Link： https://ci.nii.ac.jp/naid/130007817401

A pixel modeling of the cambering in insect flapping wings

Onishi Minato, Ishihara Daisuke, Niho Tomoya, Horie Tomoyoshi

NCTAM papers, National Congress of Theoretical and Applied Mechanics, Japan ( National Committee for IUTAM ) 65 ( 0 ) 2019.01

Language：Japanese Publishing type：Research paper (other academic)

The cambering in the insect's flapping wing plays an important role for the improvement of the aerodynamic performance. In this study, the pixel model is proposed for the cambering in the insect flapping wings. In the proposed model, the role of the vein of membrane is given by the pseudo elastic materials The fundamental performance of the proposed model is demonstrated in the comparison with the previous model using the beam and shell element.

DOI： 10.11345/japannctam.65.0_331

CiNii Article

Other Link： https://ci.nii.ac.jp/naid/130008100946

Role of fluid-structure interaction in generating the characteristic tip path of a flapping flexible wing Reviewed

Ishihara D.

Physical Review E 98 ( 3 ) 2018.09

A partition model for the computer simulation of insect flight maneuvers Reviewed

24 - 27 4pages 2018.09

General scenario of the selective mesh stiffening in the pseudoelastic mesh-moving Reviewed

20 - 23 4pages 2018.09

Coupled Finite Element Analysis Model of Structural and Electrical Coupled Analysis for Electrical Contact Resistance

2018.07

A study on the partition method for the maneuverability of insect's flapping flight

ONISHI Minato, ISHIHARA Daisuke, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

Insects have developed their high-performance maneuverability using flapping flight in the process of their evolution. In this study, a partitioned method based on our partition model for their flapping flight, which consists of the subsystems of the wings, the body and the control, is proposed to analyze their maneuverability. Here, the proposed method is applied for a maneuver, which is assumed as the perturbation from the static hovering state. In this case, a specific analysis procedure reduced from the proposed method is the one way coupling from the wing to body subsystems, i.e. the insect flapping wings are analyzed using a finite element method for the fluid-structure interaction, the resulted thrust force acts on the insect's body, and its motion is calculated using the equation of motion of a rigid body. The fundamental performance of the proposed method is demonstrated from the comparison between the present results and the actual observation with respect to the yaw, roll, and pitch as three basic modes of maneuver.

DOI： 10.1299/jsmecmd.2018.31.225

CiNii Article

Other Link： https://ci.nii.ac.jp/naid/130007653641

Polymer-micromachining and driving test of a transmission for insect-like flyer

URAKAWA Kohei, ISHIHARA Daisuke, TAKAGI Masakatsu, MURAKAMI Sunao, UEO Junpei, KUMAGAI Takeru, HORIE Tomoyoshi

The Proceedings of Mechanical Engineering Congress, Japan ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Partitioned Iterative Method for Composite Piezoelectric Bimorph Using Structural Shell and Electric Solid Elements

TAKATA Rei, ISHIHARA Daisuke, Chigahalli Ramegowda Prakasha, NIHO Tomoya, HORIE Tomoyoshi

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

In general, piezoelectric bimorph for actuators and sensors is thin and includes electrodes and shim plates. Therefore, this study deals with the thin composite piezoelectric bimorph. Solid elements can describe the various type of distributions of electric potential over the thickness. However, shell elements are more appropriate for the thin structural analysis. Therefore, instead of using piezoelectric solid elements or piezoelectric shell elements, solid elements and shell elements are used to simulate the electrical field and the structural field, respectively. The coupled algorithm is based on the block Gauss-Seidel method and a novel transformation method between the solid and shell variables. In the structural analysis, the rule of mixtures about the bending rigidity and the mass is used. In the electrical analysis, the single piezoelectric solver is used to obtain the potential distribution in the composite piezoelectric bimorph using a pseudo-piezoelectric treatment for the conductor. Finally, this study illustrates the very accurate potential distributions in the actuator and sensor modes of the thin composite piezoelectric bimorph.

DOI： 10.1299/jsmecmd.2018.31.236

CiNii Article

Other Link： https://ci.nii.ac.jp/naid/130007653661

A shape simplification modeling of the cambering in insect’s flapping wings using beam and shell Reviewed

Ishihara D., Yokota J., Onishi M., Niho T., Horie T.

Transactions of the Japan Society for Computational Engineering and Science 2018 2018.01

Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)

In this study, a shape simplification modeling of insect flapping wings is proposed in order to reveal the mechanical roles of the veins in their cambering, since it seems to be unclear how the elastic deformation of insect wings caused by the aerodynamic force results in their camber. In the proposed modeling, the veins are divided into the areas according to their functions, and the macroscopic constitutive relationship in each area is described using the corresponding beam. Furthermore, the wing membrane supported by the veins is described using a rectangular shell. The aerodynamic pressure dominant in the cambering is considered in the static deformation of the model wing. The finite element analysis taking into account the geometric nonlinearity is applied to the proposed model with the setup consistent with the actual insect. As the result, the mechanical roles of the veins in the cambering of insect flapping wings are revealed.

DOI： 10.11421/jsces.2018.20180018

Scopus

Other Link： https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85120066952&origin=inward

Large scale simulation of microscale contact deformation and electric current coupled finite element analysi for electrical contact resistance

NIHO Tomoya, KURAMAE Hiroyuki, YATUDUKA Ryosuke, HORIE Tomoyoshi, ISHIHARA Daisuke

The Proceedings of The Computational Mechanics Conference ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Language：Japanese Publishing type：Research paper (other academic)

Electrical contact resistance plays important role in melting and bonding of steel sheets interface for resistance spot welding. Although many researchers have proposed theoretical models of electrical contact resistance, microscale structural and electrical coupled finite element analysis is required to evaluate electrical contact resistance because its characteristics depend on the real contact surface, elasto-plastic large deformation contact behavior, electric current and temperature. In this study, we discuss a microscale structural and electrical coupled finite element analysis for the electrical contact resistance. In this analysis, the structural analysis with elasto-plastic, large deformation and contact effect is performed using measured surface based finite element analysis model and temperature dependent material properties. Deformed shape obtained by the structural analysis is used for the electrical analysis considering temperature dependent electrical resistivity. The electrical contact resistance analyses are performed to discuss the SS–RVE (Statistically Similar Representative Volume Element) size and computational cost, and to confirm the validity of the proposed analysis method. The dependency of the electrical contact resistance on the contact pressure and the temperature are compared with those of Babu's model and experimental results from the viewpoint of these path dependencies.

DOI： 10.1299/jsmecmd.2018.31.257

CiNii Article

Other Link： https://ci.nii.ac.jp/naid/130007653677

Prototyping of Insect-like micro flyer with 2.5-dimensional structure

TAKAGI Masakatsu, ISHIHARA Daisuke, OHIRA Naoto, MURAKAMI Sunao, HORIE Tomoyoshi

The Proceedings of the Bioengineering Conference Annual Meeting of BED/JSME ( The Japan Society of Mechanical Engineers ) 2018 ( 0 ) 2018.01

Microfabrication of hybrid structure composed of rigid silicon and flexible PI membranes Reviewed

Murakami S., Ishihara D., Araki M., Ohira N., Ito T., Horie T.

Micro and Nano Letters 12 ( 11 ) 913 - 915 2017.11

Microfabrication of hybrid structure composed of rigid silicon and flexible polyimide membranes Reviewed

Murakami S., Ishihara D., Araki M., Horie T., Ohira N., Ito T.

2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 840 - 843 2017.08

Strongly Coupled Finite Element Analysis of Electric-Structure-Fluid Interaction in MEMS

No.OS8-02-02, 2pages 2017.08

Design of micro flexible wing mimicking insect flapping flight using fluid-structure interaction analysis Invited

111 - 112 2017.05

表面マイクロマシニングに基づく昆虫規範型マイクロ飛行体の試作

高木方勝，大平直人，石原大輔，村上直，堀江知義

電磁力関連のダイナミクスシンポジウム論文集 13 - 14 2017.05

Passive mechanism of pitch recoil in flapping insect wings Reviewed

Ishihara D., Horie T.

Bioinspiration and Biomimetics 12 ( 1 ) 2017.02

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Papers - ISHIHARA Daisuke