A macro-mesoscopic method for forced vibration behavior of SiCf/Ti composite cantilever beam

Abstract

In this article, we use a macro-mesoscopic method to analyze the forced vibration behavior of the SiCf/Ti cantilever beam. The shear-lag model was applied to determine the stress-strain relationship of SiCf/Ti composites with matrix cracking, interface debonding, wear, and failure damages under tension-compression loading. We established the cyclic tension-compression constitutive model of SiCf/Ti composites by considering the evolution laws followed by three injury patterns. From a macroscopic perspective, we use the cyclic tension-compression constitutive model to obtain the stiffness reduction at different stress levels and reduce the stiffness at different stress levels. Finally, we use Ansys software to reveal the forced vibration properties of the SiCf/Ti cantilever beam under different acceleration amplitudes.

Keywords:

• Continuous SiC fiber reinforced titanium matrix composites
• forced vibration
• cyclic tension-compression constitutive
• shear lag model
• aircraft engine

Code availability

Not applicable.

Compliance with ethical standards

Not applicable.

Disclosure statement of interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.

Research data policy and data availability statements

All date used to support the findings of this study are included within the article.

Table 1. Basic parameters of composite materials at 425 °C.

Additional information

Funding

This work was supported by the National Science and Technology Major Project [J2019-V-0009-0103].