Acoustoelastic guided wave propagation in axial stressed arbitrary cross-section. (14th March 2019)

• Record Type: Journal Article
• Authors: Yang, Zhengyan; Wu, Zhanjun; Zhang, Jiaqi; Liu, Kehai; Jiang, Youqiang; Zhou, Kai
• Is Part Of: Smart materials and structures. Volume 28:Number 4(2019:Apr.)
• Publication Date: 2019-03-14
• Subjects: guided waves -- acoustoelastic -- SAFE -- arbitrary cross-section -- stress measure; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/aadb6e
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: This paper investigates the effect of axial stress on acoustoelastic guided wave propagation in arbitrary cross-section. Many researchers have investigated the effect of stress on guided wave propagation in arbitrary cross-section. However, the effect of high-order elastic constants in guided waves propagation of such structures is not as well understood. This paper deals with an acoustoelastic theory combined with semi-analytical finite element (AE-SAFE) method for modeling stressed wave propagation. The dispersive solutions are obtained in terms of phase velocities, group velocities and velocity sensitivities to stress variations in complex arbitrary cross-section. These results can be utilized to select the appropriate points and are significant for stress measure in arbitrary cross-section at high frequency region. The AE-SAFE method is applied to three examples, including plates, load bearing stringer and rail track.