Feappv explicit

[Samer]

Dear Prof. Taylor/ FEAP admin,
1-I am trying to solve a TRANSient,EXPLicit problem using FEAPpv. I receive the “error: expl Not an implemented method”.
Although the manual of FEAPpv state that a transient explicit analysis is possible, the file dparam.f doesn’t show this case. Please advice?
2- It is required to insert the command Mass or Mass,lump when doing a tran,explicit solution. Can FEAPpv calculate the mass matrix if I am using a user defined element?
Best Regards,

[FEAP_Admin]

(1) Look in program/dparam.f to see which methods are defined in FEAPpv.
(2) If you want a lumped mass you can indicate that on the material cards.  TANG will compute
the generalized stiffness matrix which includes the mass matrix without you needing to to do
anything else when using its elements.  If you are writing your own element, you should use the
ctan( ) parameters as indicated in the programmers manual to construct the appropriate generalized
stiffness matrix.