TY - GEN
T1 - Static and Fatigue Behaviour of the Main Section of a Fast Patrol Boat
AU - Gonçalves, Carlos
AU - Martins, Rui Fernando dos Santos Pereira
AU - Almeida, Raquel Albuquerque Soares Brás de
AU - Neves, Luís Leal das
PY - 2014
Y1 - 2014
N2 - This paper analyses the static resistance, as well as the fatigue resistance, of the main section of a fast patrol boat designed and manufactured in Portugal. The ship under study is a high-speed lightweight craft that was mainly fabricated with two types of aluminium series alloys, namely the 5083-H111 and the 6082-T6 alloys, which are commonly used in shipbuilding. The structural response of the critical section of the ship was obtained using the Finite Element Method (FEM), when the structure was submitted to different loading conditions, such as the hydrodynamic and hydrostatic sea loads, the longitudinal sagging or hogging, or the loads on fuel oil tanks. Results obtained for the load cases considered showed that the Von Mises equivalent stresses do not exceed the Yield Strength of the aluminium alloys used in the manufacturing of the ship. In addition, strain gages were placed on the main ship's bulkhead, near a structural detail in its bottom, and real-time acquisition strain data was collected using a computer code routine written in LabView. The Rainflow cycle counting method was applied to load spectrum gathered in order to obtain the Rainflow matrix and to predict the fatigue life of the critical main section of the ship.
AB - This paper analyses the static resistance, as well as the fatigue resistance, of the main section of a fast patrol boat designed and manufactured in Portugal. The ship under study is a high-speed lightweight craft that was mainly fabricated with two types of aluminium series alloys, namely the 5083-H111 and the 6082-T6 alloys, which are commonly used in shipbuilding. The structural response of the critical section of the ship was obtained using the Finite Element Method (FEM), when the structure was submitted to different loading conditions, such as the hydrodynamic and hydrostatic sea loads, the longitudinal sagging or hogging, or the loads on fuel oil tanks. Results obtained for the load cases considered showed that the Von Mises equivalent stresses do not exceed the Yield Strength of the aluminium alloys used in the manufacturing of the ship. In addition, strain gages were placed on the main ship's bulkhead, near a structural detail in its bottom, and real-time acquisition strain data was collected using a computer code routine written in LabView. The Rainflow cycle counting method was applied to load spectrum gathered in order to obtain the Rainflow matrix and to predict the fatigue life of the critical main section of the ship.
KW - Fatigue analysis
KW - Finite element analysis (FEA)
KW - Naval aluminium alloys
KW - Rainflow matrix
KW - Real-Time acquisition strain data
U2 - 10.1016/j.proeng.2014.06.242
DO - 10.1016/j.proeng.2014.06.242
M3 - Conference contribution
T3 - Procedia Engineering
SP - 161
EP - 164
BT - XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17)
A2 - Guagliano, Mario
A2 - Vergani, Laura
PB - Elsevier
T2 - XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17)
Y2 - 1 January 2014
ER -