1 Erratum to: Nonlinear Dyn DOI 10.1007/s11071-015-2076-3

The nodal coordinates vector \(\mathbf e ^j\mathbf e ^{{j}\mathrm{T}}\) was missing in Eq. (18) in the original publication. Equation (18) is shown correctly below:

$$\begin{aligned} \mathbf{C}^{j}=\frac{1}{2}A\int {\left( {2E\gamma _{s} +\frac{8G\gamma _{d}}{3}} \right) (\mathbf{S}^{\prime \mathrm{T}}\mathbf{S}^{\prime }\mathbf{e}^{j}\mathbf{e}^{j\mathrm{T}} \mathbf{S}^{\prime \mathrm{T}}\mathbf{S}^{\prime })dx}\nonumber \\ \end{aligned}$$
(18)