Rifqi Ryandi Dwi Ananto, Andoko, Heru Suryanto, Feliks Sutrisno
Crack analysis on coil spring is intended to simulate stress, fatigue life, SIF mode I, II, J-Integral, and fatigue crack growth rate. Simulations were carried out using the Ansys Static Structural approach. The material used was tested for its composition and obtained SAE 9260 steel material is. The simulation results in conditions without crack show that the stress concentration point occurs in the 2nd coil according to the location of the coil spring fracture with an equivalent value of von misses 1236.1 MPa below the ultimate tensile strength value of SAE 9260 material. The results of the stress intensity factor value show that mode II shows the highest value was KII=171.11 MPa√mm, compared to the value of KI=97.175 MPa√mm. This is following the analysis of the number of cycles and the fatigue crack growth rate in mode II which has a lower number of cycles of 97500 cycles compared to mode I which is 677700 cycles, while in mode II it has a critical crack size value of 10.28 mm followed by a drastic decrease in strength. The maximum value of J-Integral for the given crack is 0.33962 mJ/mm2 which is located at the end of the crack. © 2024 American Institute of Physics Inc.. All rights reserved.
Mechanical Engineering Department, Engineering Faculty, State University of Malang, Semarang Street No.5, East Java, Malang, 65145, Indonesia