Damping analysis of composite materials and structures

Berthelot, Jean‐Marie; Assarar, Mustapha; Sefrani, Youssef; Mahi, Abderrahim El

doi:10.1016/j.compstruct.2007.10.024

Cited by 198 publications

(113 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…4). There is a lot of publication describing modeling of layered materials [3,4,7,14]. For our case it is possible to find inspiration in Crawly & Adams [2] who tried to compare mesh 6×6 with 5×5 and obtained results that variation in natural frequencies is less than 2 %, it means that material properties and boundary conditions are generally not only for composite simulation more important than a very fine mesh.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Generally, the damping in metal structures is low, which results in high amplitudes of the vibrations. For fibre reinforced composite materials, damping is higher and it depends on the constitution of the materials [4]. The free vibration of a cantilevered hollow cylindrical solid is investigated based on a general three-dimensional theory of linear elasticity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Kulhavý¹,

Lepšík²

2017

Vib. proced.

View full text Add to dashboard Cite

Abstract. Constructions based on long fiber composite frames gaining significant and irreplaceable position through almost all traffic sectors. The aim of this presented work is a study of composite rods made by two ways from pre impregnated fibres. In technical practice, one can find applications of so called "prepregs", especially for so-called wrapping, which is a gradual helical layering of wide tapes. This is a quite simply method with a good quality of final parts, but the using is limited only for straight shapes. Therefore, a method called winding, which is a simultaneous deposition of larger number of fiber filaments was used to handle the problem for curved shapes and fluently changed cross-sections. Even though this method could expand the using of presaturated fibres, in a real case compared with wrapped parts there is evident imperfect alignment and mutually storing of placed fibers. This could be mainly caused by a significant tortuosity and stickiness of the individual fiber strands. The objective the carried work was to experimentally compare the vibrational -modal behavior of two almost identical rods. One was winded and the second kind was wrapped with the same structure of layers, weight and curing parameters. The results of the two compared tubes, that should be theoretically identical, were significantly different. Another step was compilation of a numerical model and verify its suitability for parts created with the two mentioned production methods. The numerical model was in a good agreement with the empirical obtained from the experiment with wrapped parts. However, the using of this standard model also for winded tube is questionable, because of the significantly differences in founded natural frequencies.

show abstract

Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Kulhavý¹,

Lepšík²

2017

Vib. proced.

View full text Add to dashboard Cite

show abstract

“…In another study, glass and carbon were compared and glass fiber composites had better damping values than carbon fiber composites [7 and 8]. Berthelot et al [9] determined frequencydependent loss factors and damping coefficients by analyzing the fiber layer sequences and orientations, and beam length variations on the effect of vibrations. Adam and Bacon modeled and tested unidirectional angular layers and crosswise layers for general situations and they reported that the best damping values were obtained for different angles [10].…”

Section: Related Workmentioning

confidence: 99%

Effect of Orientation Angles on Vibration Properties at Carbon Fiber Reinforced Polymeric Composites

Aydın¹,

Gündoğdu²,

Kaya³

et al. 2018

NWSA

View full text Add to dashboard Cite

In this study, composite plates with dimensions of 300x300mm were produced by VARTM (Vacuum Assisted Resin Transfer Molding) method using unidirectional carbon fiber fabrics. The composite plates were produced symmetrically at four different orientations ((0°) 4 ,(60°/-30°) S ,(45°/-45°) S , (0°/90°) S ) and four layered. Required specimens according to three-point bending and vibration tests related ASTM standards for were cut from produced plates. The maximum flexural stresses of the specimens were determined by performing three-point bending tests. Free vibration tests under fixed-free boundary conditions were performed to determine their natural frequencies and damping ratios. As a result of the tests, specimens with (0°) 4 directional angles were found to have the highest bending strength. Also, composite specimens with orientation angles (0°) 4 have the highest natural frequencies and lowest damping ratios. (45°, -45°) S , the natural frequency values were the lowest while the damping ratio values were found to be the highest.

show abstract

“…With the development of high speed and ultra-precision machining technology, using materials with high strength and damping properties have become a new trend for machine tool beds [1]. Traditional materials like cast iron are widely used as machine tools bed, but they can hardly meet the need of dynamic properties, heat stability and corrosion resistance.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Resin Mineral Composites Lathe Bed

Wang¹,

Zhang²,

Yin³

et al. 2015

Proceedings of the 5th International Conference on Information Engineering for Mechanics and Materials

View full text Add to dashboard Cite

Abstract. To study the static and dynamic performances of lathe bed made of resin mineral composite, a series of finite element analysis by ANSYS Workbench for lathe beds made of cast iron and resin mineral composite are conducted respectively in this article. It is proved by the results acquired from the static and modal analyses that the lathe bed made of resin mineral composite is better in both static and dynamic performances. The analyses results also give guidance to the design of resin mineral composite lathe bed.

show abstract

Damping analysis of composite materials and structures

Cited by 198 publications

References 29 publications

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Comparison of modal characteristic of wrapped and winded composite tubes from carbon prepreg

Effect of Orientation Angles on Vibration Properties at Carbon Fiber Reinforced Polymeric Composites

Finite Element Analysis of Resin Mineral Composites Lathe Bed

Contact Info

Product

Resources

About