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Questions related from Mehdi Baghaee
Is there any commercial FEM software package that has shell elements to model piezoelectric materials? I know the ANSYS and ABAQUS dont have such elements. Solid elements brings up high errors...
28 September 2017 802 3 View
I have a big 1000*1000 symbolic matrix (some of its diagonal entries are function of x variable), is there a trick way to calculate closed form inverse of a such matrices in Matlab or Maple?
06 September 2017 3,792 4 View
Consider a piezoelectric layer, polarized in its thickness direction and a top and bottom electrodes. What does it mean when we say that this piezo layer is short-circuited? Does it mean that the...
28 June 2017 256 5 View
If the electric field vary linearly(e.g.along thickness) in a piezoelectric material , it is said that there is electrical locking in piezoelectricity. what does it mean electrical locking in...
13 May 2017 8,233 1 View
Suppose we want to solve following attached general eigenvalue problem in which the matrices K11, M11 are symmetric, positive definite and very ill conditioned as well as K12. What method do you...
15 April 2017 9,297 3 View
Hi All, To get EOM of a specific type of vibrating shell structure, I constructed the Hamilton equation of the system with messy and complex integrand (so many derivatives and variables are...
13 January 2017 7,698 2 View
Hi all, If you have experience in control of non-affine systems, what do you think about the best method to cope with control of such a kinds of systems? Any comment will be appreciable. Regards
15 February 2016 1,238 2 View
What does it mean normalizing a random signal in robust control? For example, normalizing a disturbance signal and passing it through a filter to feed the plant input. Please provide comprehensive...
13 July 2015 1,750 3 View
