1 0 0 0 OA 607 異なる移動速度における摩擦係数計測とその評価(GS 材料力学1)
- 著者
- 平光 陽一 渡邊 武 西村 尚哉 村瀬 勝彦
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 東海支部総会講演会講演論文集 2012.61 (ISSN:24242748)
- 巻号頁・発行日
- pp._607-1_-_607-2_, 2012-03-15 (Released:2017-06-19)
1 0 0 0 OA 地域気候モデルを用いた地球温暖化に伴う洪水・渇水リスクの評価に関する考察
- 著者
- 和田 一範 村瀬 勝彦 冨澤 洋介
- 出版者
- Japan Society of Civil Engineers
- 雑誌
- 水工学論文集 (ISSN:09167374)
- 巻号頁・発行日
- vol.49, pp.493-498, 2005-02-01 (Released:2011-06-27)
- 参考文献数
- 7
- 被引用文献数
- 4 4
The influence of global warming on hazard risk is estimated from the results of the regional climate model by Japan Meteorological Agency and Meteorological Research Institute. The horizontal resolution of the model is about 20km and the model outputs are expected to be useful for the risk assessment of the future. Before beginning the risk assessment, the model output values during 1981-2000 were verified by comparing with observed precipitation data. The verification shows that the precision of the models are generally well in representation of the precipitation, the normal value of the monthly precipitation and the annual maximum daily precipitation in each region. According to the analysis from the model outputs, the extreme daily precipitation in 100-yr time period will increase in some parts of western Hokkaido, northern Tohoku region, Hokuriku region and Nansei islands during 2081-2100. While, the result of the seasonal variation of precipitation shows that the precipitation will decrease especially in many areas in Japan except Hokkaido region from winter to spring, and the drought risk will increase there.
1 0 0 0 円管の衝撃軸圧縮塑性座屈実験
- 著者
- 村瀬 勝彦 ジョーンズ ノーマン
- 出版者
- 社団法人日本材料学会
- 雑誌
- 材料 (ISSN:05145163)
- 巻号頁・発行日
- vol.42, no.483, pp.1420-1426, 1993-12-15
- 被引用文献数
- 5 6
Progressive plastic buckling appears in the axial symmetric behavion of circular tubes subjected to static loads or low velocity impacts,when the inertia effect is neglible.For high velocity impacrs in which imertia cannot be neglected,the studies.However,a series of impact tests on tubes by Florence et al.recorded thephenomenon of dynamic plastic buckling in which the deformation consists of many waves superposed on a uniform plastic deformation.This phenomenon was found for moderately thick circular tubes subjected to high velocity axial impacts.Ren et al. observed that dynami plastic buckling developed on thin circular tubed.Thus,the plastic buckling behavior for high velocity impact tests on circular tubes consist of both progressive plastic buckling and dynamic plastic buckling,but the deraied behavior is not clear yet.The purpose of this study is to clarify the characteristics for the transition process from progressive plastic buckling to dynamic plastic buckling.In particular,the following features are examined:(1) The comparison and consideration of various experimental methods used in the pervious impact test results.(2) The influence of end condition on the static buckling behavior of circular tubes.(3)The consideration of some impact test results.