Design and analysis of biomimetics based excavator bucket and tooth

Abstract

Within the scope of this paper, various bucket tooth designs and a biomimetic bucket design were created in order to produce a solution on digging efficiency which is one of the general problems of construction machines. These designs were inspired by giant anteater and American badger front claws. The inspiration aspect was diversified by integrating the paw and claw curves of the giant anteater and by bringing American badger claws into the design in different ways. Furhermore, the designed biomimetic bucket alternatives were compared between each other and the standard bucket equipment used in the market by making a computer aided static analysis. The compared criteria were the equivalent stress and total deformation formed on the bucket itself, the excavation equipment and the excavated soil. According to the analysis results, when the bucket tooth named P2 is mounted to the standard bucket, it has 42% lower Von-Mises stress on than standard bucket tooth. Additionally, it is exposed 4,7% less total deformation than standard tooth. Also, in terms of maximum Von-Mises stress formed on the soil model, P2 causes 17,5% greater stress than the standard bucket tooth.

Biomimetic Design of Soil-Engaging Components: A Review

“…The resistance of the sample decreased by up to 12.6% compared to the standard bucket teeth of type 80, observed when the depth of penetration ranged from 10 mm to 40 mm. Furthermore, Akter et al [ 42 ] took both longitudinal and vertical cross-sectional curves of the claw toe into consideration and designed bionic excavator bucket teeth that contained more characteristics of the dog and badger claw toes, which also had good drag reduction effects.…”

Doğada Bulunan Darbe Sönümleme Sisteminin Yapısal Analoji Yoluyla Geri Tepme Mekanizmasına Entegre Edilmesi

“…ADAPTATION) Biyomimikri, yaşam problemlerine karşı doğanın zaman süzgecinden geçmiş desen ve stratejilerine öykünerek, sürdürülebilir çözümler aradığı inovatif bakış biçimidir. Biyomimetik yaklaşım ise doğadaki bir doku, form veya işlevin tersine mühendislik yoluyla mühendislik tasarımlarına entegre edilmesi süreci olarak tanımlanabilir [11][12]. Ağaçkakanlar yuva yapmak ve yiyecek bulmak gibi yaşamsal fonksiyonları için ağaç kabuklarına birbiri ardına seri vuruşlar yaparlar.…”

Dynamic digging force modeling and comparative analysis of backhoe hydraulic excavators

“…It is worth noting that the digging force exerted by an excavator is contingent upon not only the mechanical structure and power system parameters, but also the shape, size, and material composition of the tool. In the pursuit of optimizing excavation performance, Akter and Basak [10] proposed diverse bucket tooth designs, including bionic bucket tooth designs, which exhibited lower equivalent forces and total deformation, as well as higher maximum Von-Mises stresses on the soil model when compared to standard bucket teeth. Sun et al [11], on the other hand, employed a genetic algorithm to derive the optimal shape line of the bucket, resulting in a 9.92% reduction in cutting angle compared to the pre-optimization stage.…”