Given hydrocarbon molecular structures as elastomers

three dimentional (3D) molecular structure of hydrocarbons was analyzed by finite element analysis in vibration mechanics. The stiffness matrix and vibration equation of molecular structure system was established

and its eigen values of inherent frequency and stiffness matrix were obtained by calculation using MATLAB software

followed by QSPR model for the liquid hydrocarbon conductivity by multivariate regression method. For training set consisting of 581 liquid hydrocarbons

the correlation coefficient R between the calculated values of liquid conductivity using QSPR model and the experimented data is 0.9874

the mean absolute error less than 0.00259 W·m-1·K-1

and the relative error less than 2.39%. For testing set comprising 22 liquid hydrocarbons

the correlation coefficient R is 0.9550

the mean absolute error less than 0.00263 W·m-1·K-1

and the relative error less than 2.42%. It showed that the calculated values by this QSPR model fit experimental data well in terms of conductivity of liquid hydrocarbon. It can be used to estimate the liquid conductivity of complex hydrocarbons such as acyclic alkanes

alkenes

alkynes

monocycle alkanes

polycyoalkanes

decahydronaphthalenes

fluorene alkanes

perhydrophenanthrenes

indene alkanes

and pinanes.