Exploring and analyzing the influence of hinge gap and component flexibility on the dynamic performa

In addition to the above mentioned studies on the dynamics of parallel mechanisms with hinge gaps, there have been several other research efforts in this area. For instance, Yamada et al. (2016) investigated the dynamic behavior of a 3-DOF parallel robot with internal hinge gaps through numerical simulations. They analyzed the effect of the gap size and learned that larger gaps caused higher vibration amplitudes and increased energy loss in the system.

Furthermore, Li et al. (2018) developed a modified dynamic model for a planar 3-RRR parallel manipulator with hinge clearance. They used a nonlinear spring-damping contact force model to describe the contact between the hinge pin and the sleeve. The model took into account the energy loss due to damping and accurately captured the transition from static to dynamic friction during motion. The simulation results showed that the hinge clearance had a significant impact on the dynamic performance of the mechanism, leading to increased vibration and reduced efficiency.

In a similar study, Zhang et al. (2019) investigated the dynamic response of a 6-DOF parallel manipulator with hinge clearance. They used a modified Coulomb friction model to describe the friction between the components and considered the flexibility of the rods. Their findings revealed that the hinge clearance and flexibility had a substantial influence on the dynamic behavior of the mechanism. The vibration amplitudes and contact forces increased with larger gaps and higher flexibility, leading to reduced efficiency and decreased system stability.

Moreover, Gupta et al. (2020) developed a dynamic model for a 5R mechanical system with hinge gaps using the Lagrangian approach. They considered the frictional contact between the hinge pin and the sleeve and applied a modified Coulomb friction model to accurately describe the transition from static to dynamic friction. Their analysis showed that the hinge clearance caused severe collisions and impacts between the sub-elements of the components, leading to increased stress, wear, and noise in the system.

Based on these studies, it is evident that the dynamics of parallel mechanisms with hinge gaps and flexibility are of utmost importance and require further investigation. The presence of gaps and the flexibility of the components significantly affect the overall performance of the mechanical systems, including efficiency, stability, and vibration levels. Therefore, engineers and researchers must consider these factors during the design and manufacturing processes to ensure optimal performance and reliability.

In conclusion, the dynamic analysis of parallel mechanisms with hinge gaps and flexibility is a crucial area of research. Various studies have been conducted to investigate the effects of these factors on the performance of the systems. The analysis has revealed that hinge clearance and component flexibility have significant impacts on the vibration amplitudes, contact forces, and overall efficiency of the mechanisms. Therefore, careful consideration of these factors is essential in the design and manufacturing process to ensure optimal performance and reliability of parallel mechanisms.