著者

成田 吉弘

出版者

一般社団法人 日本機械学会

雑誌

最適化シンポジウム講演論文集

巻号頁・発行日

vol.2000, pp.229-234, 2000

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A new multi-objective design approach is proposed for handling many different objective functions in the design problem of laminated composite plates. First, a number of various vibration and buckling eigenvalues are calculated for some discretized fiber angles of the plate by the Ritz method. These eigenvalues are taken to be the object functions. The second step is based on statistical treatment of the data. For each object function, the calculated eigenvalues for different fiber angles are normalized by the maximum value and then the deviated values are determined on the assumption that the eigenvalues are sujected to the Gaussian distribution with the standard deviation of 10 and average of 50. The optimal fiber angle, within the discretized values of fiber angles, is determined by examining the sum of the deviated values of all the object functions.

著者

李 美龍 田中 恒也 成田 吉弘

出版者

日本感性工学会

雑誌

日本感性工学会論文誌 (ISSN:18840833)

巻号頁・発行日

vol.11, no.3, pp.407-417, 2012 (Released:2012-06-04)

参考文献数

10

被引用文献数

4 5

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This is a feasibility study that uses various visual images of products to investigate an abstract concept known as tiresomeness. Tiresomeness can be an important criterion when consumers make up their minds to purchase new products. This study aims to grasp the characteristics of tiresomeness and how consumers generally recognize its existence, as well as to clarify the conditions that evoke tiresomeness. Based on a discrimination experiment, visual elements associated with product designs are extracted to study the conditions that influence whether a consumer gets tired of observing visual images of 12 products. Tiresomeness is produced as “function”, “design”, “experience”, “time” and “interest”. It is clarified that the design elements that controll tiresomeness are “simplicity”, “statement”, “the number of colors”, and “usability”.

著者

成田 吉弘

出版者

一般社団法人日本機械学会

雑誌

年次大会講演論文集 : JSME annual meeting

巻号頁・発行日

vol.2004, no.6, pp.25-26, 2004-09-04

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A survey was made to cover the recent development in the finite element analysis of shell structures. It was found that the considerable efforts have been made in the past five years to create new types of finite elements for analyzing various mechanical behaviors of shell structures, particularly of composite shell structures.