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Matrix

Submitted by Anonymous (not verified) on
education
matrix
If I have the matrix A=[1 2 3;4 5 6;7 8 9] and the matrix B={1;2;3}



of course A*B is C={14;32;50}.





My question how can I get the matrix A if I have B and C ?
thank in advance

Mortar FEM

Submitted by sachinsinghgautam on
education

Hello,

  I am interested about the Mortar Finite Element Methods. I have a general idea about what it is about. I am interested in some text which can get me started. While looking for some books on the subject I could find 2 (one phd thesis in book form by Yang and a unpublished book from CRC press to be out by June 2011) and some on books on Domain decomposition methods. Since I dont have easy access to library facilties, I would like to know if there are papers whichcan get me started.

 Thanks a lot,

 Dr. Sachin Singh Gautam

On the sign of shear stresses in the Mohr's circle

Submitted by Faustino Mujika on
education

Usually, the position of points in Mohr's circle is attributed to a sign convetion related to shear stresses. It is shown that points in the circle related to shear stresses generating a clockwise moment are in the upper half of the circle as a consequence of the position of principal directions, not due to a convention. I hope this note could help to explain better the use of Mohr's circle in plane stress states.

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