Thermal residual stress and interface binding effects on fiber reinforced composites
| Autor: | Deliang Meng, Lichun Bian, Yaping Huo |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Deformation (mechanics) Mechanical Engineering Stress–strain curve 02 engineering and technology Fiber-reinforced composite 01 natural sciences Thermal expansion Matrix (mathematics) 020303 mechanical engineering & transports 0203 mechanical engineering Residual stress 0103 physical sciences Shear stress Fiber Composite material 010301 acoustics |
| Zdroj: | Archive of Applied Mechanics. 91:3315-3326 |
| ISSN: | 1432-0681 0939-1533 |
| DOI: | 10.1007/s00419-021-01968-4 |
| Popis: | The properties of fiber composites change with increasing the temperature, which generates the different thermal stresses and thermal expansion coefficients for fiber and matrix. The existence of a force makes the fiber and matrix maintain a bonding state in the process of expansion, and this force is fundamental for the equation of stress and strain. For a flexible substrate, the shear stress of matrix is inversely proportional to the distance to fiber, and the internal axial shear stress equation is obtained in this study. The deformation compatibility condition of interface could be also defined if the fiber and matrix are without debonding. Because the residual stress is a kind of balance of internal stress, the balance formula is proposed, and then the thermal residual stress expression could be finally obtained. It is found that the value of thermal residual stress varies with the length of fiber, and the effect of fiber length-diameter ratio on thermal residual stress is also discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|