Numerical assessment of wind turbine blade damage due to contact/impact with tower during installation

[摘要] The use of floating crane vessel for installation of offshore wind turbine blades presents a great challenge in terms of its random motions and is likely to increase the probability of the blade hitting the preassembled tower during lifting operation. To evaluate the consequences of such scenarios and to determine the allowable motions or sea states for such operations, it is very important to understand the damage development in the blade due to impact. The present paper employs the application of high fidelity finite element method to investigate the damage behavior in the blade when the leading edge of the blade hits the tower. A nonlinear time domain structural analysis using ABAQUS was conducted on the DTU 10 MW reference blade model which is based on shell elements. Damage assessment along with the nature of evolution of various energies is examined and presented for two different impact velocities with modified layup stacking sequence at the contact region.

[发布机构] Department of Marine Technology, Norwegian University of Science and Technology (NTNU), Trondheim; NO-7491, Norway^1;Centre for Marine Operations in Virtual Environments (SFI MOVE), NTNU, Larsgardsvegen 2, Ålesund; 6009, Norway^2;Centre for Autonomous Marine Operations and Systems (AMOS), NTNU, Trondheim; NO-7491, Norway^3;Department of Mechanical and Industrial Engineering, NTNU, Richard Birkelandsvei 2B, Trondheim; NO-7491, Norway^4

[学科分类] 计算机科学（综合）

[关键词] Contact regions;Contact/Impact;Damage assessments;Damage behavior;Damage development;Impact velocities;Stacking sequence;Wind turbine blades