Flexible joints performance assessment of additive manufacturing FDM 3D printed TPU
Daniel Rodríguez-Flores, Héctor Cervantes-Culebro, J. Enrique Chong-Quero, Carlos A. Cruz-Villar, Himadri Majumder, Himadri Majumder, Himadri Majumder, Himadri Majumder
TL;DR
This paper studies how different 3D printing parameters affect the mechanical behavior of flexible joints used in robotics.
Contribution
The study introduces a method to assess the damping and spring coefficients of TPU 3D-printed joints using the Box-Benken design and statistical analysis.
Findings
Density, layer thickness, and width most influence damping behavior.
Raster angle has the greatest impact on the spring coefficient.
3D-printing parameters significantly affect the mechanical performance of flexible joints.
Abstract
Given the increasing adoption of flexible 3D-printed joints in the field of robotics, it is essential to characterize the stiffness/spring coefficient and damping of printed specimens to understand the effects of various processing parameters and their interactions under different loading conditions. This study aims to research the effects of 3D-printed parameters and geometric dimensions, i.e, printing density, layer thickness, raster angle, length, width, and height. The Box-Benken design of experiments is conducted to obtain 44 different parametric combinations to characterize the damping and spring coefficients CF, KF, 𝐂τ, 𝐊τ under a dynamic load. The damping and spring coefficients are characterized using the minimum squared method. Depending on the force decomposition, the damping and spring coefficients are different in each direction. To analyse the experimental results, a…
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Taxonomy
TopicsAdditive Manufacturing and 3D Printing Technologies · Soft Robotics and Applications · Piezoelectric Actuators and Control