Dynamic Analysis of a Fatigue Test Bench for High Precision Flexure Hinges

Abstract

General technological development and better knowledge of compliant mechanisms increase the growth in their applications. In current science the focus is on developing new hinge shapes or improving existing hinge types. Even though it can be assumed that the manufacturing based influences have a crucial impact on the performance of flexure hinges, experimental studies of the fatigue of compliant joints are currently missing in research activities. Thus, a test bench for fatigue testing was built to study the manufacturing based influences on the performance of high precision flexure hinges. First investigations show high load cycles. Hence it might be useful to increase the test frequency to reduce the overall testing time. Nevertheless, this causes increased inertia forces and moments which could additionally affect the test specimens. Accordingly, this contribution analyzed the dynamic behavior of the test bench. The kinematic equations are derived. Afterwards the actual forces acting on the test specimens are calculated and compared to a quasi-static load.

The original version of this chapter was revised: The initial of author’s name was corrected. The erratum to this chapter is available at 10.1007/978-3-319-45387-3_23

An erratum to this chapter can be found at http://dx.doi.org/10.1007/978-3-319-45387-3_23