Calculation of Stretch Stress of Double-Layer Plate Composites

Abstract:

The stretch stress of each layer of laminate composite undergoes complex changes after being stretched, which significantly affects the stretch strength. In order to determine the magnitude of the change, the paper directly solved the stretch stress using the analytical method through simple assumptions, and obtained the analytical calculation formula. Studies on double-layer plates show that the magnitude of stretch stress is closely related to the elastic modulus, length and thickness dimensions of the plate layer, the shear modulus of the adhesive, the thickness of the adhesive layer, and the external stress, and the maximum stress occurs at the middle section. The calculation of the formula provides a convenient way to check the stretch strength.

• Periodical: Key Engineering Materials (Volume 861)
• Pages: 529-533
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.861.529
• Online since: September 2020
• Authors: Yan Ru Li, Wan Shan Chen*, Zhen Hai Wang, Hai Bo Jiang
• Keywords: Composite Material, Laminates, Strength Check, Stretch Shear Stress

References

[1] Z. Shaoshi, Z. Zhuo, Composites and viscoelastic mechanics, Mechanical Industry Press, Beijing, (2011).

[2] C. Liemin, Y. Baoning, Mechanical analysis of composite materials, China Science and Technology Press, Beijing, (2006).

[3] S. Yingcui, Y. Wei, Wang Lipeng, The buckling of AGS cylinders made of CCF300 and T300 under axial compression, Structure & Environment Engineering. 37 (2010): 46-50.

[4] C. Gang, W. Dong, T. Zhengneng, et al, Numerical study on property of mechanically fastened joints in stitched laminates, Structure & Environment Engineering. 32 (2005): 6-11.

[5] A. Al-Mansour, H. Renwei, C. Xiaoquan, et al, Study on compressive properties of composite laminates with center delamination defect, Structure & Environment Engineering. 34 (2007): 14-21.

[6] A.H. Puppo, H.A. Evensen, Interlaminar shear in laminated composite under generalized plane stress, Journal of composite materials. (1970) 204-220.

DOI: 10.1177/002199837000400206

[7] S. Tang, A boundary layer theory-part Ⅰ: laminated composites in plate stress, Journal of composite materials. (1975) 33-41.

[8] S. Tang, A Levy. A boundary layer theory-part Ⅱ: extension of laminated finite strip, Journal of composite materials. (1975) 42-52.

DOI: 10.1177/002199837500900105

[9] S. S. Wang, I. Choi, Boundary-layer effects in composite laminates, part I: free-edge stress singularities, Journal of applied mechanics. 49 (1982) 541-548.

DOI: 10.1115/1.3162514

[10] C. Zhang, L. B. Lessard, J. A. Nemes, A closed-form solution for stresses at curved free edges in composite laminates: A variational approach, Composite science and technology. 57 (1997) 1341-1354.

DOI: 10.1016/s0266-3538(97)00061-4

[11] H. Mingyong, W. Anwen, Vibration and Interlaminar stress of Orthotropic Laminated Plates , Acta Mechanica Solida Sinica. 29 (2008) 172-174.

[12] L. Jipeng; M. Binjie, A survey on the analysis of the interlaminar stress in composite laminates, Structure & Environment Engineering. 40 (2013) 33-41.