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Because the pavement materials play an important role in
road engineering,and thus many papers have been published for
studying the relative material behaviors. However, most of
previous papers are limited to experimental and theoretical
analysis, the works related to numerical analysis for this
problem are rarely seen up to the present time. Based on the
Gibbs free energy model, which can be used to describe the
pavement material behaviors properly. In this paper, two
portions, namely, isotropic response and deviatoric response in
itsmodel are combined to become an incremental relationship, and
the global modelcan be used for numerical analysis. Therefore,
the purpose of this study is tointegrate the models and to
derive an incremental equation by the principle ofvirtual work.
Then, the governing equation in a form of finite element model
is developed. From the comparisons between numerical computation
and experimental data, it can prove that the present finite
element model has a reasonable accuracy. In the mean time, the
results provided better descriptions of mechanical behaviors for
a three dimensional structure under forced conditions, and the
information may be useful in practical applications.
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