<div>Hi, dear prof. Blaha and dear all users of wien2k,<br clear="all"> I have several problems on the calculation of elastic constant of cubic lattice to ask you for your confirmation and help.</div>
<div> Which is correct, strvect(i,j)=privect(i,j)*(I+strten(i,j)) and strvect(i,j)=(I+strten(i,j))*privect(i,j)?</div>
<div>Here, privect(i,j) is the primitive vector of original lattice£¬strvect(i,j) is the primitive vector of distorted lattice, strten(i,j) is strain tensor, and I is an identity matrix.</div>
<div> Thank you very much.</div>
<div> Best regards.</div>
<div> Sincerely,</div>
<div> Jian Zhu</div>
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<div>Scoool of Materials Science and Engineering<br>Central South University<br>Jian Zhu </div>