Search found 8 matches

by Salem.Okpokparoro
Thu May 30, 2019 9:08 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason I would greatly appreciate clarity on certain issues concerning wind loads on the tower. My aim is to isolate the wind forces on the tower and apply them based on "Eurocode 1. Action on structures, part 1-4: Wind load" to my 3d FE model of the tower. The following are the approa...
by Salem.Okpokparoro
Wed May 29, 2019 11:59 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason 1) Pardon the naivety of my question. If the TowerPtLoads from Aerodyn are in N/m, why is a portion of FTHydrot(:,J)=u%TowerPtLoads%Force(DOF_Sg,J)/p%DHNodes(J) rather than u%TowerPtLoads%Force(DOF_Sg,J)*p%DHNodes(J) 2)Is the Aerodyn output TwNFdx and TwNFdy equivalent to corresponding To...
by Salem.Okpokparoro
Wed May 29, 2019 11:27 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason
Where and how are the tower aerodynamic drag forces computed by Aerodyn applied in ElastoDyn.f90?
Regards
Salem
by Salem.Okpokparoro
Fri May 10, 2019 9:09 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason
Many thanks for your help.
Regards
Salem
by Salem.Okpokparoro
Fri May 10, 2019 7:33 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason
Thank you very much for your responses, they've been very helpful. Finally what interpolation schemes are employed by elastodyn in the area suggested above and any suggestions as to the best way of achieving such interpolation?
Regards
Salem
by Salem.Okpokparoro
Fri May 10, 2019 5:37 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason 1) If I understand correctly the location of strain gage 20 i.e. node 20 from the tower base would be 77.6 - (77.6/20)/2 ? And the location of strain gage 1 would be (77.6/20)/2? What is the distance between two strain gages (Is this contant)? where: flexible tower height=77.6 m number of...
by Salem.Okpokparoro
Thu May 09, 2019 1:26 pm
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

Re: OC3-hywind tower forces

Dear Jason Many thanks for responding. Let me throw more light on what I have done. 1) I didn't change the source code. I outputted TwHtFL for nodes (1 to 20) and assumed the contribution of each portion to be (TwHtFL_for node n) - (TwHtFL_for node n+1). for example node 19 the contribution is taken...
by Salem.Okpokparoro
Thu May 09, 2019 7:19 am
Forum: Structural Analysis
Topic: OC3-hywind tower forces
Replies: 14
Views: 1284

OC3-hywind tower forces

Dear all, I am modelling the OC-3 hywind spar tower in Abaqus. These are the laods I am transferring to the Abaqus model: 1) Tower top forces and moments (3 YawBrFp and 3 YawBrMp) 2) I have outputted 19 tower element forces (FrcFGagT) at TwrGagNd 19,18,17......,1. these would be applied to correspon...

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