Izvorni znanstveni članak
https://doi.org/10.21278/brod70108
NUMERICAL SIMULATION OF ICE MILLING LOADS ON PROPELLER BLADE WITH COHESIVE ELEMENT METHOD
Feng Wang
orcid.org/0000-0001-6501-0507
; School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Zao-Jian Zou
; School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China
Zhou Li
orcid.org/0000-0003-2142-2811
; Jiangsu University of Science and Technology, Zhenjiang 212003, China
Yang Wang
; School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Hao Yu
; China Shipbuilding Industry Corporation Limited, Beijing 100097, China
Haihua Zhang
; Shanghai branch, China Ship Scientific Research Center, Shanghai 200011, China
Sažetak
In ice-infested waters, propellers of a polar ship are likely to be exposed to ice loads in different scenarios. Propeller milling with ice is one of the most dangerous cases for ice-propeller interaction. In this study, we try to simulate dynamic milling process of ice-propeller and reproduce resulting physical phenomena. Cohesive element method is used to model ice in the simulation. To simulate material properties of ice, an elastoplastic softening constitutive law is developed. Both crushing and fracture failures are included in the ice-propeller milling process. The ice loads in 6 Dofs acting on blades of a propeller are calculated in time domain. The average and standard deviations of simulated dominant ice loads are compared with those from model test. A good agreement is achieved. By varying propeller rotation speed, advance velocity and cutting depth on ice block, the sensitivity study has been carried out. The results show that dominant ice loads are affected much by the three parameters. It is shown that decreasing rotation speed, or increasing advance velocity and cutting depth may lead to higher ice loads. Care should be taken to avoid over-loading on propeller when operating in ice for polar ship.
Ključne riječi
propeller-ice milling; cohesive element; constitutive law; ice loads; propeller
Hrčak ID:
216903
URI
Datum izdavanja:
31.3.2019.
Posjeta: 2.434 *