Ahmad Yavari's blog

About weak formulation

Submitted by Ahmad Yavari on Tue, 12/24/2019 - 16:38

Hello dear all

I have a question about the weak formulation.

It's my pleasure if one dear person guides me.

please see the small attached PDF file.

Ahmad Yavari

B-Spline and NURBS

Submitted by Ahmad Yavari on Thu, 02/25/2016 - 09:59

Hi Dears

I have a question about B-Spline or NURBS. Assume that we have a X(u)=sig(Ri,p(u)).Xi that Xi are the control points and Ri,p are the rational basis functions. When I choose a parametric variable like ui according to control point by interpolation I can find the X(ui), now the question is this that can I find the parametric variable according to having an spatial X(u)??? It means that can I find the parametric variable that have resulted a spatial X(u) that I have it???
thanks for your attention.

Which is older??

Submitted by Ahmad Yavari on Wed, 12/25/2013 - 18:03

mechanician

hi every body:

What's your idea? The virtual displacement is special case of hamilton's principle or the hamilton's principle come from virtual displacement? Or, Which is older?