دانلود رایگان مقاله لاتین مدل سازی رشته فیبر کربن از سایت الزویر
عنوان فارسی مقاله:
مدل سازی آسیب برای رشته فیبر کربن / لوله کامپوزیت فرسودگی رشته اپوکسی تحت فشار شعاعی
عنوان انگلیسی مقاله:
Damage modeling for carbon fiber/epoxy filament wound composite tubes under radial compression
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Cylindrical shells have numerous applications in aerospace, aeronautic and marine structures, such as in launch vehicle fuel tanks, fuselages and offshore structures. They have the ability to support high levels of axial and transverse compression loadings, where most of the structure is submitted to membrane loads, and its efficiency is derived from the lack of through-thethickness stress gradients [1]. These structures are traditionally metallic-based, but the requirements for increasing the payload in such aeronautic and marine structures are motivating the use of polymeric composites, mainly due to their lack of corrosion and high stiffness and strength-to-weight ratios [2]. Among the composite manufacturing processes, filament winding (FW) stands out due to high precision in fiber positioning, high fiber content, good automation capability and low void content, being the most common process for manufacturing revolution and axisymmetric parts, such as pressure vessels and tubes [3]. When these structures suffer uniaxial or biaxial compression loads, the shell structure initially starts to deform stably, eventually reaching a critical point where equilibrium stops to be stable. Buckling occurs when the structure suddenly deflects unstably, losing its capacity to keep resisting the compressive loading [4]. Composite tubes may fail due to global or local buckling under compressive loadings, and they present two distinct behavior. The evolution of high radial displacements followed by global buckling and, consequently, collapse, or just a sudden collapse. The load prediction is much more difficult for composite structures than for metallic shells, beams and plates [5]. In addition, if the composite is sufficiently thick, the structure may fail due to material failure, thus avoiding buckling [6]. Damage prediction is a key aspect in the designing of composite tubular structures. Continuum Damage Mechanics (CDM) has been applied with success to model failure in composite structures. For instance, Camanho et al. [7] used CDM to predict strength and size effects in notched carbon/epoxy open-hole specimens subjected to tensile loading. Su et al. [8] developed a model using CDM for the progressive damage in open-hole specimens under compressive loading. Liu and Zheng [9] developed an energy-based stiffness degradation CDM model to predict the progressive failure of pressure vessels considering three failure modes: fiber breakage, matrix cracking and fiber/matrix interface failure. An important parameter in the laminates is the stacking sequence, since each ply contributes to the global mechanical response. The effect of the winding sequence on the radial compressive behavior of composite tubes is significant. As shown by Melo [10], tensile strength and modulus can increase up to 20% just changing the stacking sequence in comparison to those laminates with the same ply angle throughout the laminate. Thedevelopment of a computational model to simulate damage in filament wound composite tubes allows reducing costs and timeconsuming experimental tests in the development of products. There are many reports on the literature dealing with the compressive behavior of composite tubes under axial compression [11–13]. Faria and Guedes [14] and Guedes et al. [15] performed similar experimental ring deflection tests on glass fiber/polyester pipes focusing on long-term creep behavior. However, there are only few investigations on composite tubes under radial compression. Among them, Rafiee [16] evaluated the radial compressive behavior of FW tubes by means of experimental and theoretical approaches, and Tonatto et al. [17] performed an experimental and numerical assessment of the crushing behavior of offloading hoses. The number of damage models has increased, but failure prediction for composite structures is still a challenge, especially for tubular structures. Therefore, the present work proposes to develop a computational model to predict damage initiation and evolution of carbon fiber/epoxy composite tubes manufactured by FW and subjected to radial compressive loading, and to compare the results to those from actual experiments.
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کلمات کلیدی:
Damage modeling for carbon fiber/epoxy filament ... - ResearchGate https://www.researchgate.net/.../309175522_Damage_modeling_for_carbon_fiberepoxy... The focus of this study is the development of a computational model with damage to predict failure of carbon fiber/epoxy filament wound composite tubes under ... Progressive damage modeling in carbon fibers ... - ResearchGate https://www.researchgate.net/.../312411503_Progressive_damage_modeling_in_carbon_... Damage in carbon fibers/Epoxy laminate composites containing carbon nanotubes (CNTs) is described. This investigation presents the third part of paper series ... [PDF]Modeling of Crush Behavior of Carbon Fiber Composites https://mech.utah.edu/ASC2016/assets/0804.pdf by V AITHARAJU The use of continuous carbon fiber composites in load bearing automotive applications can ... Material models for intra and inter-laminar damage mechanisms ... [PDF]Fatigue Damage Modeling of Composite Structures - AerospaceLab ... www.aerospacelab-journal.org/sites/www.aerospacelab-journal.org/.../AL09-06_0.pdf by M Kaminski - Cited by 5 - Related articles Issue 9 - June 2015 - Fatigue Damage Modeling of Composite Structures: the ONERA Viewpoint .... can reach 0.9 for CFRP (Carbon Fiber Reinforced Polymer). Progressive Fatigue Damage Modeling of Composite Materials, Part II ... journals.sagepub.com/doi/abs/10.1177/002199830003401302 by MM Shokrieh - 2000 - Cited by 125 - Related articles To validate the fatigue progressive damage model, developed in the first part of this ... Carbon Fiber Reinforced Epoxy Resin Composite Systems," Composites, ... [PDF]Damage Model for Composites Defined in Terms of ... - Ever J. Barbero barbero.cadec-online.com/papers/.../01BarberoLonettiDamageModelForComposites.p... by P LONETII - 2001 - Cited by 47 - Related articles The damage model is validated \\'ith experimental results for various laminates built with aramid/epoxy, T300/5208, and T300/914 carbon/epoxy. A fiber-reinforced polymer matrix composite is inholnogeneous~ but can be modeled as an.
