Optimization of the CAT 318B L excavator teeth bucket structure topology design using the finite element method

Infrastructure development in this era has developed rapidly. Excavators are generally used to dredge rivers, dismantle roads, or demolish buildings. One of the most important components in an excavator is the bucket teeth. Bucket teeth generally have two important characteristics, namely maximum performance and wear life. Therefore, the author is interested in discussing one of the problems that exist in the bucket teeth excavator and optimizing the design of the bucket teeth that are already on the market in order to produce a lighter design. In this study, optimization of the bucket teeth excavator CAT 318 BL was carried out. In this simulation used linear static method for topology optimization process. The results obtained after topological optimization were found that the mass reduction in the first variable design was 0.22 kg and in the second variable design was 0.32 kg. In addition, the maximum von misses stress in variation 1 is 141,743 MPa, while in variation 2 is 145,879 MPa. The safety factor value of the first design variable is 2.92 and the second design variable is 2.84 where it can be said that the value of the stress that occurs in both designs, although tends to increase, is still declared safe.