[[alternative]]The Study of Vibration Effects on Hands when Riding a Bicycle

[[abstract]]近年來，自行車在國內外越來越受重視，各種使用功能不同的車型，及應用高科技材料與技術的設計，均使自行車有多元化的改變。不過，由於發展過快，許多人因工程方面的問題，如避震效果、車體結構安全性與騎乘舒適等，並未做有效評估。基於此，本研究的目標，在於以電腦模擬方式及自行建構實驗裝置，探討自行車騎乘時手部受震動的影響。 本研究之發展，分三部份進行即 ：（一）資料收集，包括車架關鍵尺寸與人體相關尺寸，（二）實體模式建構與量測，包括車體、環境模擬與實驗裝置之設定，及（三）騎乘操作之電腦模擬實驗。透過相關資料之收集與量測所建立的資料庫，進行統計之多變量變異數分析，以評估手部受震動之影響。分析之結果發現震動的震幅大小，會影響手部的握持；而環境的坡度亦有相當程度之影響。 本研究之結果，將可提供設計師在設計自行車時，考慮車體結構之改善與避震材料之選用，以減低因車體震動所造成的手部不舒適。 Currently, bicycles have been widely used in many places by different ages of people. There are several types of bicycles for specific purposes, such as leisure, cross-country, and mountaineering. It is noted that the application of high technology in bike frame, such as carbon-fiber, titanium alloy, board type, and one piece forming has also been considered. However, the development of bicycles is too fast, many aspects of ergonomic problems on bicycles, such as vibration effects, body structure stability, and riding comfort, need further studies to ensure that users are in favorable conditions. The objective of this research is to explore the vibration effects on hands when people are riding bicycles in different road conditions. The development process of the research includes: (1) data collection on bike frame dimensions and related body extremity anthropometry, (2) physical model construction and virtual environment setup, and (3) experimental simulation on riding operation. The concept of statistical multivariate analysis is applied with the assistance of SPSS software. The result indicated that the scale of vibration will affect hand gripping; while road slope will have little effect. It is expected that the result can assist designers to consider how to improve body frame and choose materials for reducing vibration when people are riding