## Search found 7 matches

Thu Aug 06, 2020 1:57 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Dear Jason,

Thank you for your helpful response! We appreciate.

Kind regards,
Wed Aug 05, 2020 7:59 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Dear Jason, thank you for your fast reply , i would like to tell you although I have changed the values of the matrix but the result of the natural frequency it is the same : eigenvalue( 1) = 0.436656D+05 mode 1 frequency = 0.000348 ====================== BModes v3.00 Main Input File ===============...
Wed Aug 05, 2020 6:14 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Dear Jason , Sorry, i would like ask about BModes_jj: i tried first time without considering the foundation(hub_conn=1), and i have as a result for the natural frequency: eigenvalue( 1) = 0.493762D+11 mode 1 frequency = 0.370346 When i consider the foundation i have as a resulat(hub_conn=3) : eigenv...
Tue Aug 04, 2020 6:31 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Dear Jason,

Thank you for your help.

best regards,
Mon Aug 03, 2020 8:13 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Hi Jason, thank you for your fast answer, Yes, I'm using CompSub=2. Sorry if I were not that much clear at first, but I would like to check the effect of the foundation on the tower loads by giving foundation's mass, inertia and stiffness. To start a simulation with OpenFAST I need to give different...
Mon Aug 03, 2020 3:55 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Hi, My apologies for the late reply, thank you for your detailed and helpful explanation. i'am studying onshore wind turbine and i want to know the effect of the foundation on the tower loads , i would like to ask about how could i calculate the eigenfrequencies (with the consideration of the founda...
Sun Jun 07, 2020 3:29 am
Forum: Structural Analysis
Topic: Modeling of linear foundation for onshore turbine
Replies: 22
Views: 3322

### Re: Modeling of linear foundation for onshore turbine

Hi Jens ,
i would like to ask you about the calculation inside the 2 Matrix(Damping, Stiffness).