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S-N Curve of Unidirectional Fibrous Composite With Different Stress Ratio in Aerospace Structures

Publish Year: 1390
Type: Conference paper
Language: English
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IASIP01_012

Index date: 6 August 2011

S-N Curve of Unidirectional Fibrous Composite With Different Stress Ratio in Aerospace Structures abstract

Fibrous composites are finding more and more applications in aerospace, automotive, and naval industries. They have high stiffness and strength to weight ratio and good rating in regards to life time fatigue. Investigating mechanical behavior under dynamic loads to replace this material is very important.In the present article, investigate Fatigue of Unidirectional Fibrous Composites by using finite element analysis. So, to achieve this purpose Firstly, modeling fiber and matrix in separate case and simulated semi actual conditions, attained S-N curve of fiber and matrix and after that by using micromechanical model of combination fiber and matrix can approach S-N curve of Unidirectional Fibrous Composites in different stresses ratio (R=0, 0.1). Finally, Comparisons of the finite element analysis of Ansys and the experimental predictions indicate based on three point bending fatigue testing that the results are satisfactorily in good agreement with each other which approves the power law assumption in the model.

S-N Curve of Unidirectional Fibrous Composite With Different Stress Ratio in Aerospace Structures Keywords:

S-N Curve of Unidirectional Fibrous Composite With Different Stress Ratio in Aerospace Structures authors

Alireza AmiriAsfarjani

Department of Engineering, Islamic Azad University, Qom branch, Qom, Iran

Sayid Adibnazari

Department of Aerospace, Sharif University, Tehran, Iran

Kazem RezaKashyzadeh

Young Researchers Club Of Semnan, Islamic Azad University, Semnan branch, Semnan, Iran.

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