Jul 2026· Journal of Mechanisms and Robotics· Vol 18· 0 citations
Abstract
The design freedom of additive manufacturing has potential to increase the complexity, functionality, and mechanical behavior of compliant mechanisms compared to conventional manufacturing methods. However, this same design freedom can result in “trial-and-error” design iteration when designing compliant mechanisms for target behaviors. Trial-and-error design iteration is undesirable and inefficient, particularly when designing compliant mechanisms with nonlinear-elastic materials and large deformations. To address this problem, we develop a synthesis method for the inverse design of compliant mechanisms that uses numerical optimization and a library of building blocks that incorporate nonlinear-elastic materials, and large deformations as geometric nonlinearity. The synthesis method works by selecting the type and geometry of the building blocks that will deflect to a target shape under a given load, or achieve a target stiffness response. The method's ability to use different building block geometries and incorporate nonlinear behaviors, such as the superelasticity of shape memory alloys, is shown to enhance the design of compliant mechanisms to reach target shapes or stiffness responses.
Passive stiffness modulation is essential for compliant robotic systems in dynamic and uncertain environments, where rigid actuators or constant stiffness designs are often insufficient to ensure safety and adaptability. This paper presents the design, modeling, optimization, and experimental validation of a Load-Dep...
Zhenjie Shi, Yan-Jun Liu, Yiran Wang et al.· Journal of Mechanisms and Ro...· 0 citations
We present a method to design the shape of a compliant mechanism to obtain large displacement at the output point in the desired direction while making the displacement in the orthogonal direction nearly zero. As the nonlinear constraint of the orthogonal displacement is challenging in gradient-based optimization, we...
D. Gupta, G. K. Ananthasuresh· Journal of Mechanisms and Ro...· 0 citations
The increasing demand for lightweight, mechanically efficient structures in aerospace, automotive, biomedical, energy, and transportation engineering has accelerated the development of architected cellular materials fabricated through additive manufacturing. Lattice structures provide a particularly attractive solution...
Additive manufacturing enables the production of structures conceived with optimal design freedom, realising the potential of conceptual gains. The design of composites with variable orientations, or variable stiffness design, holds unexplored potential for benefiting from optimisation techniques and additive manufactu...
Paulo Arthur Costa de Freitas, T. Dutra, R. T. Ferreira· Journal of the Brazilian Soc...· 0 citations
Piezoelectric-actuated nanopositioning stages commonly employ flexure amplification mechanisms to enlarge output displacement and are widely used in optical measurement, micro and nano manufacturing, and other precision engineering fields. However, existing methods still have limitations in computational efficiency, hi...
Hou-Wen Fu, Wen-Xi Zhang, Zi-Qi Wang et al.· Micromachines· 0 citations
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