Static and Vibration Analyses of a Composite CFRP Robot Manipulator

This paper reports analyses of a 5-degrees-of-freedom (5-DOF) carbon fiber-reinforced polymer (CFRP) robot manipulator, which has been developed for farm applications. The manipulator was made aluminum alloy (AA) and steel materials. However, to check the effectiveness CFRP materials on static free-vibration performance AA parts were replaced with CFRP. For this purpose, effects various cross-sections layups three design criteria—deflection, load-carrying capacity, natural frequency—were investigated. Two types thin-walled laminated sections, specifically I section rectangular tubular used composite parts. These from hollow square (“SSS” section) beams (“III” beams. multi-cell modeled using finite element (FE) method. Three configurations selected analysis based manipulator’s most common operating conditions. results indicated that use increased frequencies, decreased tip deflection when compared its counterpart. An showed in structure could improve vibrational performances. It observed “SSS” 1.17 times stiffer, carry 1.20 higher load, 1.40 heavier than “III” Also, decreasing fiber direction angle-ply 90° 0° adding plies, while keeping total number layers constant, frequencies.