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http://dx.doi.org/10.9711/KTAJ.2021.23.6.423

Discrete element analysis for design modification of leveling blade on motor grader vehicle  

Song, Chang-Heon (Construction Equipment R&D Center, KITECH)
Oh, Joo-Young (Construction Equipment R&D Center, KITECH)
Cho, Jung-Woo (Construction Equipment R&D Center, KITECH)
Kim, Mun-Gyu (Construction Equipment R&D Center, KITECH)
Seok, Jeong-Ho (Neosystem)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.23, no.6, 2021 , pp. 423-438 More about this Journal
Abstract
The blade of motor grader is used for scattering and leveling the aggregates on the foundation of road construction site. The paper performed a design improvement research of the blade part to enhance the working efficiency of motor graders. The scattering works of aggregates by blade driving were simulated by DEM (discrete element method) of a dynamic code. The four design parameters were selected and a specific leveling scenario for the simulation was determined. The nine blade models were numerically experimented, and the sensitivity of each factors was analyzed. Next, the design factors that influence a blade performance have been selected by ANOVA, and these key design factors were applied to the progressive quadratic response surface method (PQRSM). The optimum set of design factors of the blade was finally proposed.
Keywords
Motor grader; Blade; Leveling aggregate; DEM; Design optimization;
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