材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
ISSN-L : 0514-5163
キーボード・スイッチ用ゴム製ダイヤフラムのための逆問題解析設計システムの開発
平島 禎座古 勝
著者情報
ジャーナル フリー

2002 年 51 巻 10 号 p. 1141-1146

詳細
抄録

Rubber diaphragms are widely used as elements in the mechanisms of keyboard switches. Generally, in evaluating operational feeling of keyboard switches, it is important to analyze their loading and unloading behavior to establish their force-displacement curve. Loading and unloading behavior of a rubber diaphragm exhibits high nonlinearity due to geometric and material effects. In this study, the finite element method is used to analyze the behavior and the analytical results are found to be in full agreement with experimental results. In addition, it is defined that a change of the value of a property parameter against a unit change of the value of a design parameter is a sensitivity coefficient. A Newton-Raphson method using these sensitivity coefficients is applied to modify property parameters towards pre-defined target property parameters. By several results of numerical experiments, it is expected that this design system, which has each property and its design parameter vectors and its sensitivity coefficients matrix in the database, directly gives the designer proper values of design parameters and considerably reduce design times

著者関連情報
© 日本材料学会
前の記事 次の記事
feedback
Top