抄録
A diaphragm made of stainless steel sheet is widely used as switching part in electric devices, which controls on/off of electric signal supply. Making trial pieces based on experience is a common way for designing diaphragm with certain click characteristics and fatigue life, which is time consuming and costly. In this study, a designable space method for designing diaphragm considering both click characteristics and fatigue life is proposed. This approach consists of three procedures. Firstly, design space of click characteristics is constructed based on the results of numerical simulation. Secondly, the fatigue reliability is evaluated based on the stress history of every element obtained from numerical simulation and the fatigue limit diagram with fatigue probability. Finally, design space considering fatigue reliability can be constructed by combing the click characteristics design space and fatigue reliability together. It is revealed that the proposed method is very useful for designing diaphragm considering fatigue reliability.
