Abstract:

How to establish creep model of under change loads are unfathomed contents in theory studies and applications of wood rheology. This paper broke through traditional modeling method and put forward a concept of variable coefficients rheological model that parameters of elements change with time and loads. The two-units Maxwell body of variable coefficients simulated for the creep behavior of poplar wood. The results showed that the variable coefficients rheological model could use a few of spring damper unit instead of multi unit one, therefore the rheological coefficients could be solved easily. The variable coefficients rheological model could draw up the creep of wood accurately under the different forms of loads.

Key words: Wood creep, Rheological model, Variable coefficient