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Study on the coupled vibration of human body and car body system in light elastic car body

轻弹性车身中人体与车身系统耦合振动研究

基本信息

批准号：
16360113
负责人：
NAGAI Masao
金额：
$ 9.73万
依托单位：
National University Corporation Tokyo University of Agriculture and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16360113/
关键词：
Coupled vibration Flexible car body Human body dynamics Bending vibration Elastic vibration 人体・車体連成系曲げ振動モード

项目摘要

The purpose of this study is to clarify the car body proper vibration problem which is easy to occur by speedup and lightening, and to propose the effective and new vehicle design method from the dynamics standpoint in the vibration suppression. Concretely, the next three items are the main research purposes.1) The close coupled vibration problem between car-body and human-body as a peculiar vibration problem emphasized here is investigated because of the light-weight design of the recent car-body which means that the mass ratio of car body to human body becomes small.2) The design method of lightweight vehicle body based on the coupled vibration problem is proposed.3) In order to reduce the elastic vibration of the car body, it is not enough to suppress the vibration that is transmitted through suspension from the track to the car body only, but also to suppress the car-body bending vibration itself. For this vibration control, the method of the vibration control is clarified by using … More the sensors and actuators attached to the car body.The experiment by riding comfort evaluation experimental set-up produced in our university was carried out, and the similarity of the coupled vibration between car-body and human-body and seat was evaluated and was analyzed. And the validity of the fundamental evaluation method of human body and car body coupled system was examined. Analytical model of the car body vibration control system and analytical model of the human body car body system were constructed in order to analyze the vertical vibration of the system concretely. And, by using real-size test car body produced in Railway Technical Res. Inst., the coupled vibration experiment of human body and car body was carried out, and human body and car body coupled system were evaluated. The following new knowledge was obtained by these analysis and experiments.1) By modeling the vibration characteristic of human body, it was shown that the coupled vibration between human body and car body can be theoretically explained. The result of this theoretical analysis was verified clearly by the scale model experimental set-up in our university.2) According to a result of coupled vibration experiment using a real-size test car body which belong to Railway Technical Res. Inst., the experimental result carried out in our university can be in accordance with the result of the human body vibration characteristic in actual vehicle, and it can clarify the effectiveness of the human body model proposed in our university.3) By using analytical model of the human and car-body coupled vibration, a new design method for light-weight railway vehicle, which is influenced by the vibration characteristic of human body, is proposed to suppress the bending vibration (elastic vibration) by car-body attached control system. By this control system, the drastic improvement in damping performance was shown by computer simulation analysis. Less

本研究的目的在于厘清因加速与轻量化而容易产生的车体固有振动问题，并从动力学观点提出有效的新车辆设计方法，以抑制振动。具体地说，本文的主要研究内容包括以下三个方面：1）针对当前汽车车身轻量化设计中车身与人体质量比越来越小的特点，重点研究了车身与人体之间的密切耦合振动问题; 2）提出了基于耦合振动问题的汽车车身轻量化设计方法; 3）提出了基于耦合振动问题的汽车车身轻量化设计方法为了减小车体的弹性振动，仅抑制通过悬架从轨道传递到车体的振动是不够的，还要抑制车体弯曲振动本身。对于这种振动控制，通过使用阐明了振动控制的方法 ...更多信息利用自行研制的乘坐舒适性评价实验台进行了实验，对车体与人体、座椅耦合振动的相似性进行了评价和分析。验证了人体-车身耦合系统基本评价方法的有效性。建立了车体振动控制系统的分析模型和人体车体系统的分析模型，对系统的垂向振动进行了具体分析。并利用铁道技术研究所生产的实车试验车体，进行了人车耦合振动试验，对人车耦合系统进行了评价。通过分析和实验，获得了以下新认识：1）通过对人体振动特性的建模，从理论上解释了人体与车体的耦合振动。2）根据铁道技术研究院实车车体的耦合振动试验结果，3）利用人车耦合振动分析模型，提出了一种考虑人体振动特性影响的轻型轨道车辆设计新方法，提出了利用车体附加控制系统抑制弯曲振动（弹性振动）的方法。计算机仿真分析表明，该控制系统可显著提高减振性能。少