A novel flexure beam module with low stiffness loss in compliant mechanisms

Optimization algorithm-based approach for modeling large deflection of cantilever beam subject to tip load

“…However, in some cases, the cantilever beam is with initial curvature, as studied in [60][61]. The curvature-moment relationship in a unit, equation (6), should be updated to consider the initial curvature. The feasibility of applying the presented OABA to predict the deflection of a cantilever beam with initial curvature will be verified.…”

“…Beam mechanism and beam theory have been widely used in many engineering fields such as compliant mechanisms [1][2][3][4][5][6][7], flexible hinges [8][9][10][11][12][13][14][15], soft robots [16][17][18][19][20][21], piezoelectric beam-based energy harvesters [22][23][24][25], and leaf springs [26][27]. Compliant mechanisms exploit the deflection of the beams to transfer or transform the smooth and precise force and motion.…”

Kinetostatic and Dynamic Modeling of Flexure-Based Compliant Mechanisms: A Survey

“…The characteristics of this model lies in the captured load-stiffening effects [94]. Furthermore, the constraint behavior of flexure beams in terms of their stiffness and error motion is specified with this method [245]. Zhao et al [246] developed the analytical static model for the Cartwheel flexure hinge while Malaeke and Moeenfard [245] investigated the mixed flexure-rigid-link mechanisms with the beam constraint model.…”

“…Furthermore, the constraint behavior of flexure beams in terms of their stiffness and error motion is specified with this method [245]. Zhao et al [246] developed the analytical static model for the Cartwheel flexure hinge while Malaeke and Moeenfard [245] investigated the mixed flexure-rigid-link mechanisms with the beam constraint model. Recently, Chen et al included the shear effect [98] and developed the beam constraint model for large-deflection analysis of planar and spatial flexure beams, namely, the chained beam constraint model [99,100], in which a flexible beam was divided into a few elements and each element was modeled by the beam constraint model.…”

Topology optimization of a 6-DOF spatial compliant mechanism based on Stewart propotype platform

“…Compared with traditional rigid mechanisms, compliant mechanisms have the characteristics of less parts, light weight and fewer joints, which result in reduced friction, wear, impact, vibration and noise in the movement of mechanisms, and the utility mechanism can improve the precision of the mechanisms, increase the reliability, and reduce the maintenance cost [1]. In the past two decades, the important components of a compliant mechanism, such as a flexible beam, flexure hinge and structural synthesis composited by these components, have become the focus of research [2][3][4][5]. In order to establish a mathematic model of a compliant mechanism composed of these components, an equivalent stiffness method called pseudo-rigid-body method had been proposed.…”