Static and Modal Analysis of Critical Components of a Natatores-like Amphibious Robot

The urgent need for marine resources exploration and development has gradually changed the focus of research in the field of robots. The research about robots working across multimedia is more important, including the amphibious robots. In this paper, a Natatores-like robot is designed, which has the characteristics of high environmental adaptability, concealment, propulsion efficiency and energy utilization. In order to study and verify the mechanical strength of the critical components of the robot when walking on land, the static and modal simulation analysis of the leg root, shank, and webbed foot of the leg design is carried out. The results show that the static strength and static stiffness of the leg root and shank meet the requirements, and the webbed foot needs to be optimized to make it have less deformation when loaded. None of them has danger of resonance with the motor.