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error occurs when transinet anlysis is done with periodic boundary conditions

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hellow?
recently i'm trying to do a transinet anlysis in 2D plane strain of acoustic model according to block theory, a kind of periodic boundary condition is used with exp(i*k*r) . one point in the square domain is given an initial velocity or displacement?v=1 or u=1?? periodic boundary conditions is used on the boundary. if k is not equal to 0? one error occurs as failed to find consistent value, second_argument_must_be_real. i don't know how to handle this problem, hoping for your advice.
thank you!

1 Reply Last Post 2010年11月30日 GMT-5 19:54

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Posted: 1 decade ago 2010年11月30日 GMT-5 19:54
is anyone here doing the same or similar problem? please help me or give me some advices, thakn you
is anyone here doing the same or similar problem? please help me or give me some advices, thakn you

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