The effective moduli of short fiber composite with graded interphase
Five effective elastic constants for a uniaxially aligned short fiber composite, which contains graded interphase between fiber and matrix, are presented by a simple recursive algorithm under considering only two concentric cylinders at a time. The method is based on the modification of a three phase concentric cylinder model in which the cylindrical fibers are replaced by composite fibers to reflect the distance between fiber ends in the aligned short fiber composite. We confirm the Halphins result such that the major Poissons ratio, transverse Poissons ratio and shear modulus are not significantly affected by the fiber length, the corresponding quantities in the continuous fiber case can be used for the discontinuous fiber case. But the longitudinal and transverse moduli are significantly affected by the fiber aspect ratio, not as Halphins result.
effective modulus short fiber composite transversely isotropic
Jianhui ZHAO Dongxia LEI
School of Instrumentation Science & Opto-electronics Engineering, Beihang University, Beijing 10081, School of Science, Lanzhou University of Technology, Lanzhou 730050, China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）