Numerical treatment of fiber reinforced plastic crushing mechanism in virtual performance solution: Possibilities and limitations

Abstract

This paper describes both experimental and numerical investigations on the crushing behavior of fiber-reinforced plastic composites (triaxial-braid) for almost rectangular crush specimens. Fiber-reinforced plastic in general is an enormously versatile material group which allows engineers to adapt it to varying tasks, but causes large challenges regarding a trustable numerical forecast in structural simulations. The virtual performance solution (Virtual PAM-CRASH) solver can manage the crushing behavior of fiber-reinforced plastic by a phenomenological implementation, the innovation PLY100. It's possibilities as well as limitations are described briefly in the present paper. These limitations are the incentive for a new approach based on shell elements, which are arranged in a stacked shell order. The delamination process is modelled by using cohesive interface contacts. General ply cards, which are derived from standard material characterization tests, are improved via the inverse method, called MCMC method with an integrated Metropolis algorithm. Besides the numerical simulations, a large experimental drop-weight-tower study was conducted, of which a small extract is presented here. In conclusion, the new numerical approach is able to predict the crushing mechanism and also the mechanical properties during crushing accurately. Small deviations between numerical and experimental results are presented and will be addressed in a future publication.

Keywords

Composites materials by type materials design materials modeling materials research materials testing polymer matrix composites crushing triaxial braid

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References

Feindler

. Charakterisierungs- und Simulationsmethodik zum Versagensverhalten energieabsorbierender Faserverbundstrukturen. München 2014.

Greve

Pickett

Payen

. Experimental testing and phenomenological modelling of the fragmentation process of braided carbon/epoxy composite tubes under axial and oblique impact. Compos Part B: Eng 2008; 39: 1221–1232.

Joosten

Dutton

Kelly

, et al. Experimental and numerical investigation of the crushing response of an open section composite energy absorbing element. Compos Struct 2011; 93: 682–689.

Engineering Systems International (ESI). Virtual performance solution (VPS). 2014.

McGregor

Vaziri

Xiao

. Finite element modelling of the progressive crushing of braided composite tubes under axial impact. Int J Impact Eng 2010; 37: 662–672.

Schürmann

. Konstruieren mit Faser-Kunststoff-Verbunden, Berlin, Heidelberg: Springer Berlin Heidelberg, 2007.

Bussadori

Schuffenhauer

Scattina

. Modelling of CFRP crushing structures in explicit crash analysis. Compos Part B: Eng 2014; 60: 725–735.

Kass

Carlin

Gelman

, et al. Markov chain Monte Carlo in practice: a roundtable discussion. Am Stat 1998; 52: 93–100.

Neal R. Probabilistic inference using Markov chain Monte Carlo Methods. Technical Report, 1993.

10.

Gamerman

Lopes

. Markov chain Monte Carlo, Boca Raton, FL: Chapman & Hall, 2006.

11.

Honnakkalavar H. Crash investigations of composite structures using an explicit FEM-Solver and identification of failure parameters by stochastic method. Master Thesis, Technical University of Braunschweig, Wolfsburg, 2018 (restricted until 2023).