The OpenSees Community

Thanks dear fmk. As another question, I have two types of element in one domain which one of them should be solved by Newmark Method and the other should be solved by a new integrator. Is it possible to define these two methods in a common procedure? I mean, for example: For elements No. 1, 2 & ...

Dear fmk,
Is it possible for me to define the "internal force" as a function of time? I mean is it possible to implement "delta t" in the element class so that the element internal force could be dependent on the time steps?

Thanks.

debasismpt wrote: > i am working on a project PML(perfectly matched layer) modelling of > unbounded soil domain.For implementing Newmark method in this formulation > expressions are generated like given below > tangent stiffness > k=c1(ke+kt)+c2(ce+ct)+c3(me) > effective internal force > p(n+1)=(me)...

Thanks a lot....

Thanks.
Could you please give me a sample in OpenSEES which is similar to an absorbing boundary in order to start with it? i.e. to modify it in order to build "Perfectly Matched Layer"?

Dear fmk,

Hi,

I want to add a new element to opensees. In details, I should add a new kind of absorbing boundary in FEM.
For this, "Perfectly Matched Layer" is my purpose which is going to be added in OpenSEES. So, is it possible to do this with OpenSEES?

Best Regards.
Abbas