A novel one-degree-of-freedom translational partly compliant mechanism with variable motion direction

Du, Junjie; Zhang, Xianmin; Zhang, Hongchuan; Zhu, Benliang; Zhong, Weijian

doi:10.1016/j.mechmachtheory.2021.104695

Cited by 5 publications

(4 citation statements)

References 27 publications

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“…The new type of external fixator is a translational partly compliant mechanism with one degree of freedom [19]. It mainly consists of four sub-mechanisms placed symmetrically (see Fig.…”

Section: Principle Of the New Type Of External Fixatormentioning

confidence: 99%

“…Cross-spring flexures serve as the compliant revolute joint, and parallelogram flexures serve as the compliant prismatic joint [23]. Compliant joints are approximately considered rigid joints [19]. According to the constraint screw theory [24], Sub-mechanism generates motion in the motion plane (i.g.…”

Section: Principle Of the New Type Of External Fixatormentioning

confidence: 99%

“…𝜃 1 and 𝜃 2 ) of the core components, the IFM direction is changed. Their relationship of them shown in the following equals [19].…”

Section: Principle Of the New Type Of External Fixatormentioning

confidence: 99%

“…All parts of the coupling model are modeled as linear elastic materials. Cross-spring flexures, parallelogram flexures, pins, and rotating modules are modeled as steel, while other parts of the new type of external fixator are modeled as aluminum [19] (see Fig. 1(a) and (b)).…”

Section: Iteration For Fracture Healing Simulationmentioning

confidence: 99%

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An interfragmentary movement direction adjustment method for fracture healing based on genetic algorithm

Zhong

Zhang

et al. 2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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The mechanical microenvironment of the callus plays an important role in fracture healing. Many literatures have studied the influence of parameters in the mechanical microenvironment (such as fixator configuration, loading, etc.) on fracture healing. Few of them consider the influence from the direction of interfragmentary movement (IFM). In this study, combining the characteristics of a new type of external fixator, a genetic algorithm-based method for adjusting the IFM direction for fracture healing is proposed. In this method, the Mechano‐regulatory theory is used to simulate the fracture healing process, with the goal of improving the axial stiffness of the callus, and the optimal IFM direction is then found by utilizing genetic algorithm. The results show that the IFM orientation obtained by the proposed method can increase the axial stiffness of the callus faster. Moreover, it means that the weight-bearing capacity of the tibia can be quickly restored, and the external fixator can be removed as soon as possible, which provides a reference for solving the delayed and non-union problems of oblique fractures.

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“…The new type of external fixator is a translational partly compliant mechanism with one degree of freedom [19]. It mainly consists of four sub-mechanisms placed symmetrically (see Fig.…”

Section: Principle Of the New Type Of External Fixatormentioning

confidence: 99%