ABSTRACT
If bj ( j = 1, …, m) are the uncertain parameters of the chain structure, then they are expressed in the form:
the following two-order accuracy perturbation equation:
{ }e { } { }e { }= +e + ===
where {e}i,0 is the response vectors at section i when bj = bj0 (j = 1, …, m); and {e}i,j, {e}i,jk are the firstand second-order perturbations of vectors {e}i, respectively.
