Experimental-Numerical Failure Analysis of Thin-Walled Composite Columns Using Advanced Damage Models

Materials

Pawel Wysmulski¹  Jakub Pasnik¹  Patryk Rozylo¹  Katarzyna Falkowicz¹  Hubert Debski¹  Jan Kral² 

[1] Department of Machine Design and Mechatronics, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;Faculty of Mechanical Engineering, Technical University of Kosice, Letna 9, 042 00 Kosice, Slovakia;

关键词: finite element method (FEM);    post-buckling;    laminates;    progressive failure analysis;    cohesive zone model;   

DOI  :  10.3390/ma14061506

来源: DOAJ

【 摘 要 】

The paper analyzes the stability and failure phenomenon of compressed thin-walled composite columns. Thin-walled columns (top-hat and channel section columns) were made of carbon fiber reinforced polymer (CFRP) composite material (using the autoclave technique). An experimental study on actual structures and numerical calculations on computational models using the finite element method was performed. During the experimental study, post-critical equilibrium paths were registered with acoustic emission signals, in order to register the damage phenomenon. Simultaneously to the experimental tests, numerical simulations were performed using progressive failure analysis (PFA) and cohesive zone model (CZM). A measurable effect of the conducted experimental-numerical research was the analysis of the failure phenomenon, both for the top-hat and channel section columns (including delamination phenomenon). The main objective of this study was to be able to evaluate the delamination phenomenon, with further analysis of this phenomenon. The results of the numerical tests showed a compatibility with experimental tests.

【 授权许可】

Unknown