Elucidation of Collision Mechanism by Characteristic Evaluation of Impact, Vibration and Sound
通过冲击、振动和声音的特性评估来阐明碰撞机制
基本信息
- 批准号:07455104
- 负责人:
- 金额:$ 4.54万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1995
- 资助国家:日本
- 起止时间:1995 至 1996
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The colIision mechanism was investigated by characteristic evaluation of impact, vibration and sound as follows.1.Experiment and analysis from the viewpoint of characteristic evaluation of impactThe impact deformation of impacted body was measured by the high-speed camera to obtain the deformation characteristics. The restitution coefficient is obtained and the sweet-area which gives the high restitution coefficient was visualized. It was found that the sweet-area exists in the field near the grip part from the center of gravity of the racket.2.Experiment and analysis from the viewpoint of characteristic evaluation of vibrationThe transient vibrations of the system subjected to the impulsive force are analyzed by the wavelet transformation method. It was found the changes of the response spectrum with time depend on the frequency.3.Experiment and analysis from the viewpoint of characteristic evaluation of soundTo investigate the characteristics of transient sound the changes of spectrum with time for three kinds of sound were analyzed. The sound quality was evaluated by the semantic differential method. The sound quality is discriminated with pure tone level. When the damping of the system becomes large, the vibration energy flow can be estimated with the sound energy flow.
本文从冲击特性评价、振动特性评价和声特性评价三个方面对碰撞机理进行了研究,具体内容如下:1.从冲击特性评价的角度进行实验与分析利用高速摄影机对被碰撞物体的冲击变形进行了测量,得到了变形特性。得到了恢复系数,并对恢复系数较高的甜区进行了可视化。从振动特性评价的角度进行了实验与分析采用小波变换的方法对系统在冲击力作用下的瞬态振动进行了分析。从声特性评价的角度进行实验与分析为了研究瞬态声的特性,分析了三种声的频谱随时间的变化。音质评价采用语义差异法。音质是用纯音级来判别的。当系统的阻尼变大时,振动能流可以用声能流来估计。
项目成果
期刊论文数量(20)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
N.Nakagawa: "Estimation of Vibrational Energy Flow by Sound Energy in Vibrating Rectangular Plate" Acoustical Soc.of America and Acoustical Soc.of Japan Third Joint Meeting. 771-776 (1996)
N.Nakakawa:“振动矩形板中声能的振动能量流估计”美国声学学会和日本声学学会第三次联席会议。
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- 影响因子:0
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N.Nakagawa: "Impact Behaviors of Tennis Racket and Ball under Consideration of Ball-spinning" Proc.Joint Symposium 1996 Sports Engineering and Human Dynamics. 27-30 (1996)
N.Nakakawa:“考虑球旋转的网球拍和球的冲击行为”Proc.Joint Symposium 1996 体育工程和人体动力学。
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中川 紀壽: "はく離を有する粘弾性積層はりの損失係数" 日本機械学会論文集(C編). 61. 591-596 (1995)
Norihisa Nakakawa:“分层粘弹性层合梁的损失系数”,日本机械工程师学会汇刊(ed.C)61. 591-596(1995)。
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- 影响因子:0
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中川紀壽: "衝撃荷重を受ける軟質ゴムの圧縮特性評価" 第5回 材料の衝撃問題シンポジウム. 45-48 (1996)
Norihisa Nakakawa:“冲击载荷下软橡胶压缩性能的评估”第五届材料冲击问题研讨会(1996)。
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- 影响因子:0
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中川紀嘉: "衝撃荷重を受ける軟質ゴムの圧縮特性評価" 第5回 材料の衝撃問題シンポジウム. 45-48 (199)
Noriyoshi Nakakawa:“冲击载荷下软橡胶压缩性能的评估”第五届材料冲击问题研讨会45-48(199)。
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NAKAGAWA Noritoshi其他文献
NAKAGAWA Noritoshi的其他文献
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{{ truncateString('NAKAGAWA Noritoshi', 18)}}的其他基金
Construction of Sound Quality Evaluation System under Consideration of Auditory Sense
考虑听觉的音质评价体系构建
- 批准号:
12650231 - 财政年份:2000
- 资助金额:
$ 4.54万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Design of Vibration Isolator of Six Degree-of-freedom by Using Magnet-spring with Energy Source of Permanent Magnet
永磁能源磁力弹簧六自由度隔振器设计
- 批准号:
12555064 - 财政年份:2000
- 资助金额:
$ 4.54万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on Development of Diagnosis System of Machines by Using Sound Informations
利用声音信息开发机械诊断系统的研究
- 批准号:
02555051 - 财政年份:1990
- 资助金额:
$ 4.54万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)