Materials 2025, 18(8), 1852;
https://doi.org/10.3390/ma18081852 (registering DOI) - 17 Apr 2025
Abstract
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This study proposes an improved stiffness ellipsoid method to enhance
the stiffness and precision of robotic arms in friction stir welding
(FSW) operations. The method involves establishing a joint stiffness
model through static identification experiments and developing a novel
stiffness index derived from
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This study proposes an improved stiffness ellipsoid method to enhance
the stiffness and precision of robotic arms in friction stir welding
(FSW) operations. The method involves establishing a joint stiffness
model through static identification experiments and developing a novel
stiffness index derived from the improved stiffness ellipsoid method.
This index provides a refined metric for evaluating the robot’s
performance under variable loads during FSW. Simulation experiments
demonstrate significant improvements in welding trajectory precision and
computational efficiency. The findings highlight the potential of this
method to elevate FW quality and consistency.
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Applied Sciences
IJMS
