Structural Analysis of a Composite Robot Fork

• Main Authors: Yu-syuan Zeng, 曾淯瑄
• Other Authors: K.H Tsai
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/10746478463250515166

碩士 === 逢甲大學 === 紡織工程所 === 98 === In this study, a methodology is developed to analyze the deflection and vibration of a hybrid composite robotic fork with stacking sequence [w±45°/0°/±45°/w], in which w is a woven fabric. First, using the rule of mixture, three-dimensional coordinate transformation and the stiffness averaging method, the engineering moduli of the woven fabric and unidirectional composites were calculated. Furthermore, the engineering moduli of composites were homogenized in the thickness direction. Two analysis approaches, one with a five-layer and another with a single-layer in the thickness direction were used to calculate the deflection and vibration of the cantilever box-beam. The results were compared and verified with the experimental results and the effects of various geometric parameters on the box-beam’s deflection and vibration were further explored. As the box-beam’s overall height and 0 ° layer thickness increased, or the open hole position moved farther away from the binding surface, the displacement gradually decreased and the vibration frequency is increased. As the ratio of the hole and box-beam width increased, the displacement gradually increased, and on the opposite of vibration frequency decreased. In addition, the percentage error of the five-layer and single-layer results remained steady. The average computational time of the displacement and frequency of the five-layer method was 5.76 and 28.45 times that of the single-layer method, respectively.