Faculty Profiles - UEMORI Takeshi

MISC - UEMORI Takeshi

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積層セラミックコンデンサブロックの不均一圧縮変形に関する数値解析

玉尾晟次郎, 多田直哉, 上森武, 坂本惇司

日本機械学会中国四国支部第58期総会・講演会講演論文集 2020.2

406 Vickers Hardness Characteristics in Ferritic Fe-Cr Alloy Single Crystals

FUJII Kento, HAMASAKI Hiroshi, YOSHIDA Fusahito, UEMORI Takeshi, ISOGAI Eiji

2016 ( 54 ) "406 - 1"-"406-2" 2016.2

Prediction and Evaluation of Residual Stress of Steel Sheet After Leveling Process

21 ( 10 ) 597 - 602 2016

OS0108-275 Numerical Analysis of Cyclic Deformation Behaviour of Magnesium Alloy Sheet Metal by Crystal Plastic Finite Element Method

UEMORI Takeshi, KATAHIRA Takashi, NAKA Tetsuo, YOSHIDA Fusahito

2015 "OS0108 - 275-1"-"OS0108-275-2" 2015.11

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

The cyclic deformation behavior of AZ31 magnesium alloy sheet metal have been investigate in order to reveal the general material elasto-plastic behaviors related with its texture, such as Bauschinger effect and flow stress during stress reversal, by finite element analyses. To discuss these phenomena of AZ31 magnesium alloy sheet at the room temperature to 200 degree [Celsius], the crystal plasticity material models, which can take into account the size effect of twined region proposed by Kitayama was introduced into the commercial finite element code. The calculated results by the applied model can describe moderately the corresponding experimental data at the room temperature to 200 degree.

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118 Evaluation of Mechanical Properties of Self-Reinforced Polyethylene with Short Ultra-High-Molecular-Weight Fibers

TABATA Hirotsugu, TADA Naoya, UEMORI Takeshi, NAKATA Toshiya

Materials and processing conference 2015 ( 23 ) "118 - 1"-"118-4" 2015.11

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

Tensile tests were performed using plate specimens of self-reinforced polyethylene (SRPE) with short ultra-high molecular weight polyethylene (UHMWPE) fibers. The effect of fiber length on the properties was investigated. The specimens were made by hot-pressing the stacked HDPE films with short UHMWPE fibers distributed between each film at high temperature. The SRPE specimens showed much larger elastic modulus and tensile strength than monolithic HDPE specimens while their fracture took place at smaller strain than the monolithic HDPE specimens. Focusing on the effect of UHMWPE fibers, the specimens reinforced with longer fibers of 120 μm showed larger elastic modulus and tensile strength than those reinforced with shorter fibers of 60 μm. It was considered that the difference was attributed to the shearing force between fibers and matrix or pull-out force of fibers during tension taking into consideration the feet that lots of pulled-out fibers were observed on the fracture surface.

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J0410301 Deformation behaviors of sheet metals during stress path changes and its constitutive model

UEMORI Takeshi, TADA Naoya

Mechanical Engineering Congress, Japan 2015 "J0410301 - 1"-"J0410301-4" 2015.9

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

The elasto-plastic deformation behaviors of an IF steel sheet during stress path changes were investigated by performing nonproportional tension-compression tests. To evaluate the developed constitutive models in describing nonproportional deformation behaviors, numerical simulations of stress-strain responses were conducted for the same stress paths as the experiments. From the comparisons of experiment and calculations, it was found that the proposed constitutive model can describe well every deformation behaviors of an IF steel sheet during stress path changes.

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304 Prediction of Warm FLD's for AZ31 Magnesium Sheet with Consideration of Strain Path

ODE Akiyoshi, NAKA Tetsuo, UEMORI Takeshi, YOSHIDA Fusahito, KODU Masahide, HIGASHI Kenji

2010 ( 48 ) 71 - 72 2010.2

101 Elasto-plastic constitutive equation considering stress-path change

SUMIKAWA Satoshi, NAKAMURA Shuhei, UEMORI Takeshi, YOSHIDA Husahito

2010 ( 48 ) 1 - 2 2010.2

Report on the 3rd Meeting of JSTP Young Staff

UEMORI Takeshi

51 ( 588 ) 19 - 20 2010.1

128 Springback analysis of Aluminum alloy sheet

UEMORI Takeshi, SUMIKAWA Satoshi, TAMURA Syohei, HAMASAKI Hiroshi, NAKA Tetsuo, YOSHIDA Fusahito

Materials and processing conference 2009 ( 17 ) "128 - 1"-"128-2" 2009.11

Language：Japanese Publisher：The Japan Society of Mechanical Engineers

Since aluminum alloy sheet metal have strong mechanical features such as low Yong's modulus, low ductility and strong initial anisotropy (high Lankford value), it remains one of the most difficult materials to predict the final shape of springback. In order to solve the problem, we applied the Yoshida-Uemori model for an aluminum alloy sheet metal s. In the present research, we have investigated the experimental Bauschinger effect and anisotropy of aluminum sheet metal. The calculated results show the great agreement with the corresponding experimental springback for aluminum alloy sheet. The efficiency of Yoshida-Uemori model for aluminum sheet metal is proved.

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116 Numerical Simulations of Elasto-Plastic Deformation of Steels Based on the Theory of Poly-crystal Plasticity

KITAYAMA Koushirou, TAMURA Shouhei, SUMIKAWA Satoshi, UEMORI Takeshi, YOSHIDA Fusahito

2009 ( 47 ) 31 - 32 2009.2

1006 Effects of Temperature and Strain-Rate on Non-proportion Forming Limit Diagram for AZ31 Magnesium Alloy Sheets

UEKAWA Yosuke, KATAHIRA Takashi, ODE Akiyoshi, NAKA Testuo, UEMORI Takeshi, YOSHIDA Fusahito

2009 ( 47 ) 337 - 338 2009.2

206 Effect of stress-induced martensitic transformation on cyclic elastic-plastic deformation of austenitic stainless steel

OGAWA Kouhei, KANEORI Naoki, HAMASAKI Hiroshi, UEMORI Takeshi, TOSHIDA Fusahito

2009 ( 47 ) 57 - 58 2009.2

319 Prediction of Forming Limit of AZ31 Magnesium Alloy Sheets under Non-proportional Deformation

KATAHIRA Takashi, UEKAWA Yosuke, NAKA Tetsuo, UEMORI Takeshi, HINO Ryutaro, YOSHIDA Fusahito, KOHZU Masahide, HIGASHI Kenji

2008 ( 46 ) 119 - 120 2008.2

208 Prediction of yield surface of BCC metals based on crystal plasticity theory

KITAYAMA Koushirou, OGAWA Kouhei, MITO Yuji, HAMASAKI Hiroshi, UEMORI Takeshi, YOSHIDA Fusahito

2008 ( 46 ) 55 - 56 2008.2

204 Experimental observation of elasto-plastic stress-strain responses for high tensile strength steel sheets in stress path change

MITO Yuji, UEMORI Takeshi, HAMASAKI Hiroshi, HINO Ryutaro, NAKA Tetuo, YOSHIDA Fusahito

2008 ( 46 ) 47 - 48 2008.2

301 Prediction of Fracture for High-Tensile Steel Sheets under Stretch Bending

KUROSE Takanori, HARADA Kohei, NAKA Tetsuo, UEMORI Takeshi, HINO Ryutaro, YOSHIDA Fusahito

2008 ( 46 ) 83 - 84 2008.2

417 Deformation of Sheet Metal Laminate Consisting of Perforated Core Sheet and Thin Skin Sheets and Its Numerical Analysis

HIRABAYASHI Kenji, HINO Ryutaro, Uemori Takeshi, YOSHIDA Fusahito

2008 ( 46 ) 157 - 158 2008.2

320 Stress-strain behavior of austenitic stainless steel sheet subject to multi-axial pre strain

2008 ( 46 ) 121 - 122 2008.2

213 高張力鋼板の非比例二軸塑性変形挙動の実験観察とそのモデル化(変態塑性・多軸応力・多孔質,オーガナイズドセッション6.塑性挙動のモデリングとシミュレーション : ナノからマクロまで)

上森武, 市丸隆志, 三登悠司, 日野隆太郎, 吉田総仁

学術講演会講演論文集 56 209 - 210 2007

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