Abstract
In this paper, a novel method is presented to obtain some unknowns such as displacement rate using special and well-behaved functions for short fiber composites in the steady state creep by semi-theoretical method (STM). The creep behaviors are predicted in the short fiber composites under tensile axial stress. Also, the regions under the partial debonding are predicted by the obtained results along with the reason of the partial debonding. The main purpose of this research is the use of the mathematical model instead of the time consuming and expensive experimental methods. On the other hand, the creep unknowns are simply obtained by the special functions rather than some complex theories. The use of sensor is one of the important applications of the present method in the regions with uniform behaviors. The obtained analytical results are validated by FEM results. Average difference between the analytical method and FEM results is about 10% approximately. Finally, good agreements are found between the obtained analytical and FEM results for predicting the creep behavior.
Highlights
Deformation of the short fiber composites under high stress and temperature has been studied in the scientific societies, so creep analysis become more important in various industries
To verify the present method, the SiCfiber / Almatrix composite is chosen as a case study and the obtained results are compared with the finite element method (FEM) results
The axisymmetry method with non-linear quadratic element is used for finite element method (FEM)
Summary
Deformation of the short fiber composites under high stress and temperature has been studied in the scientific societies, so creep analysis become more important in various industries. Numerous researchers have investigated the steady state creep behavior using analytical and experimental methods; some of them have analyzed the steady state creep problems by long and time consuming methods with various considerations and assumptions. Some analytical and experimental attempts were carried out to analyze the creep behaviors[7,8,9,10,11,12]. A research has been carried out on the creep behavior of pre-cracked macro-synthetic fiber reinforced concrete (MSFRC) under axial tensile sustained loading[12]
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