Modeling And Analysis Of Planar Flexure Hinge Mechanisms In The Application For Mobile Phone

Flexure hinge mechanisms achieve transduction and conversion between movement, force, and energy through non-linear elastic deformation of the flexure hinge. Compared to classical rigid link mechanisms, flexure hinges hold several advantages, including less parts, virtually no assembly, no friction losses, and improving the motion precision and service life. Currently, flexure hinges has widely drawn attention from academic field to micromanipulator field, and has been applied more and more common in numerous industrial fields, such as microelectronics, optics, microelectromechanical systems, and biomedical engineering.In order to facilitate flexure hinge mechanism designers to discuss and brain-storm, this study has developed an Android application(APP) for rapid modeling and analysis in planar flexure hinge mechanisms used in Android smart phones and tablets. First, this study discusses the general mathematical modeling of chamfered flexure hinge, analyzes the geometry constraints and static balancing information of flexure hinge mechanisms, and identifies the general pattern of kinetostatics modeling which provides theoretical basis for APP design. Second, component connectivity information of flexure hinge mechanisms is stored using an adjacency matrix based on Graphy Theory, and thus ensures the transformation of flexure hinge mechanisms information into digital data which constitutes the logical basis of APP design. On the basis of these theory and logic, java programming language is used to develop the planar flexure hinge mechanisms modeling and analysis APP(FMGA). The following functions are all integrated into the APP: interface(sketch drawing), drawing module(identify the type of flexure hinges to design or analyze), parameters input module(input each component parameters of flexure hinges), digitalization module(information transform and storage), mathematical modeling module(calculation of kinetostatics model), the model solution module(solve nonlinear equations), processing module based on previous calculation results(present the analysis results for designers), et al.Using the above APP, we can design any planar flexure hinge mechanisms, analyze their kinetostatics, and provide reference for designers. Finally, this study presents the design and analysis procedures of 2 typical flexure hinge mechanisms. Furthermore, the analytic results from the APP are compared with those results from ANSYS, which in turn confirms the accuracy of APP analysis.The APP developed by this study is used in Android system. It is a software used in mobile devices for visualized flexure hinge mechanisms design and analysis. This software aims to assist designers to rapidly assess whether the designed flexure hinge mechanisms are able to meet the need of engineering design.