To improve the adsorption performance of the sucker,the study used bionics to design the pit structure on the surface of the normal sucker.So,there were multiple small suction cups on the working surface of the sucker during the adsorption process to improve the suction performance of the sucker.Partial orthogonal polynomial regression analysis was used to explore the influence of the diameter of the pit shape,the number of single-row annularly distributed pits,and the row spacing on the adsorption force of the sucker.The test showed that the sucker with different morphological parameters on the surface had different effects on the adsorption force of the sucker.When the pit diameter was 1.5 mm,the number of single-row annular pits was 40,and the row spacing was 4 mm,the adsorption force of the bionic sucker on the substrate surface was 49.54 N.Compared with the normal sucker,the maximum adsorption force of the bionic sucker on the substrate surface was increased by 49.21%.The mathematical regression model was established between the design factors and the evaluation index.The response surface method was used to analyze the significant factors affecting the pit parameters on the adsorption force of the bionic sucker.The significant order of the influence on the sucker adsorption force was determined as row spacing,pit diameter,and the number of single-row annular distribution pits.The analysis showed that the shape of the pits on the working surface changed the distribution of contact pressure and friction stress on the working surface of the sucker.The pit shape increased the friction stress and contact pressure at the edge of the pit.In addition,the friction stress and contact pressure of the working surface of the bionic sucker were greater than that of the standard sucker,which improved the adsorption force of the bionic sucker on the surface of the substrate.This present study would help to improve the adsorption performance of the sucker by designing bionic pits on the working surface of the sucker.
bionicpitsuckeradsorption forceadsorption mechanismdesign and experiment
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NSTL
万方数据
