Design and development of a X-Y-θz flexure mechanism
Looi, Jie Sin
Date of Issue2019
School of Mechanical and Aerospace Engineering
Flexure mechanisms are widely used in small-scale displacement applications due to its absence of backlash, the absence of accumulative error, and its compatibility with a vacuum and clean environment. However, most flexure mechanisms designed using traditional approaches are constrained by its optimal stiffness characteristics. Most researchers are therefore unable to identify an optimal design for the X-Y-θZ flexure mechanism. To address this, a finite element analysis programme was created to capture the physique of a structure with very complex geometries. One element and an assembled mesh were validated in the programme in terms of tensile loading and bending loading. For a single element, the programme obtained an error of 4.22% for tensile loading. It also obtained an error of 11.71% for bending loading, which could be caused by the effects of shear during loading. With regard to the assembled mesh, the programme obtained an error of 4.12% for tensile loading and an error of 0.20% bending loading.
Final Year Project (FYP)
Nanyang Technological University