TY - JOUR
T1 - Probabilistic finite element analysis of fatigue life of additively manufactureclasp
AU - Odaka, Kento
AU - Takano, Naoki
AU - Takizawa, Hideo
AU - Matsunaga, Satoru
N1 - Funding Information:
This study has been supported by JSPS Grants in Aid for Scientific Research B (20H02034). The authors would like to acknowledge the help of former students of Keio University, Mr. Shohei SATO in the numerical analyses and Mr. Tatsuto NOSE and Mr. Yutaro ABE in the experimental setup and in the study of uncertainty in the boundary conditions. There is no conflict of interest related to this study.
Publisher Copyright:
© 2022, Japanese Society for Dental Materials and Devices. All rights reserved.
PY - 2022
Y1 - 2022
N2 - The present study was aimed to develop a probabilistic finite element method (FEM) that predicts the variability in the fatigue life of additively manufactured clasp so that it can be used as a virtual test in the design phase before manufacturing. Titanium alloy (Ti-6Al-4V) clasp with integrated chucking part, which was designed for experimental fatigue test to validate the computational method, was investigated. To predict the lower bound, an initial spherical defect was assumed in the region where stress concentration was predicted. The Smith-Watson-Topper (SWT) method, Bäumel & Seeger rule, elasto-plastic FEM, and zooming FEM were used. The influence of assumed initial defect on the fatigue life was significant, and the large variability in the fatigue life was predicted. This study demonstrated that the proposed practical computational method can simulate the large variability in the fatigue life of titanium alloy clasp, which is useful in its design before manufacturing.
AB - The present study was aimed to develop a probabilistic finite element method (FEM) that predicts the variability in the fatigue life of additively manufactured clasp so that it can be used as a virtual test in the design phase before manufacturing. Titanium alloy (Ti-6Al-4V) clasp with integrated chucking part, which was designed for experimental fatigue test to validate the computational method, was investigated. To predict the lower bound, an initial spherical defect was assumed in the region where stress concentration was predicted. The Smith-Watson-Topper (SWT) method, Bäumel & Seeger rule, elasto-plastic FEM, and zooming FEM were used. The influence of assumed initial defect on the fatigue life was significant, and the large variability in the fatigue life was predicted. This study demonstrated that the proposed practical computational method can simulate the large variability in the fatigue life of titanium alloy clasp, which is useful in its design before manufacturing.
KW - Additive manufacturing
KW - Clasp
KW - Fatigue life
KW - Finite element method
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U2 - 10.4012/dmj.2021-174
DO - 10.4012/dmj.2021-174
M3 - Article
C2 - 35249900
AN - SCOPUS:85128161300
SN - 0287-4547
VL - 41
SP - 286
EP - 294
JO - Dental Materials Journal
JF - Dental Materials Journal
IS - 2
M1 - dmj/2021-174
ER -