TY - GEN
T1 - A multiaxial fatigue damage model for isotropic materials
AU - Donadon, Mauricio V.
AU - Arbelo, Mariano A.
AU - Rizzi, Paulo
AU - Montestruque, Carlos V.
AU - Amaro, Lucas
AU - Castro, Saullo
AU - Shiino, Marcos
PY - 2020/1/1
Y1 - 2020/1/1
N2 - This paper presents a novel damage mechanics based failure model enabling the prediction of low cycle fatigue life and residual strength of isotropic structures under multiaxial loading. The approach herein proposed does not discretize every load cycle but instead takes an envelope loading whereby the numerical load remains constant at a maximum load level and the number of cycles is obtained from a given elapsed time defined within a pseudo-time framework. The proposed formulation is based on the smeared cracking approach accounting for damage propagation due to static and fatigue loadings, where the static component is based on the Von-Mises yield criterion and Prandtl-Reuss stress flow rule; whereas the crack propagation in cyclic loading component is based on the Paris-law. Furthermore, the formulation combines damage mechanics and fracture mechanics within a unified approach enabling the control of the energy dissipated in each loading cycle.
AB - This paper presents a novel damage mechanics based failure model enabling the prediction of low cycle fatigue life and residual strength of isotropic structures under multiaxial loading. The approach herein proposed does not discretize every load cycle but instead takes an envelope loading whereby the numerical load remains constant at a maximum load level and the number of cycles is obtained from a given elapsed time defined within a pseudo-time framework. The proposed formulation is based on the smeared cracking approach accounting for damage propagation due to static and fatigue loadings, where the static component is based on the Von-Mises yield criterion and Prandtl-Reuss stress flow rule; whereas the crack propagation in cyclic loading component is based on the Paris-law. Furthermore, the formulation combines damage mechanics and fracture mechanics within a unified approach enabling the control of the energy dissipated in each loading cycle.
KW - Damage mechanics
KW - Damage propagation
KW - Finite elements
KW - Smeared cracking approach
UR - http://www.scopus.com/inward/record.url?scp=85071886215&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-21503-3_26
DO - 10.1007/978-3-030-21503-3_26
M3 - Conference contribution
SN - 9783030215026
T3 - Lecture Notes in Mechanical Engineering
SP - 336
EP - 348
BT - ICAF 2019 – Structural Integrity in the Age of Additive Manufacturing - Proceedings of the 30th Symposium of the International Committee on Aeronautical Fatigue, 2019
A2 - Niepokolczycki, Antoni
A2 - Komorowski, Jerzy
PB - Springer
T2 - 30th Symposium of the International Committee on Aeronautical Fatigue, ICAF 2019
Y2 - 2 June 2019 through 7 June 2019
ER -