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Help regarding Generalized alpha method
Posted 2010年5月20日 GMT-4 06:37 0 Replies
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As it is an implicit integration scheme and is mainly controlled by a factor named spectral radius which ranges from 0 to 1 deciding the numerical damping of the algorithm. I am modelling wave equation in !D using the weak form subdomain mode. I have the following questions;
1) I want to use explicit time integration to reduce the computation time. Is it possible to make this implicit generalized alpha method explicit? And how to decide which value of spectral radius is most suitable or how the value of spectral radius affects the computation time.
2) How to use lumping of mass matrix in generalized alpha solver? (Mass lumping also reduces the computation time without affecting the accuracy of the algorithm. If I am not wrong about this)
3) In the time stepping tab in solver parameters, there is an option for relative tolerance. How to select its appropriate value? I mean what does this tolerance refer to?
Thanks in advance.
Aqeel
Hello Aqeel Afzal Chaudhry
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