Linear and nonlinear FE analyses of a container vessel in harsh sea state

2013 ◽  
pp. 485-493
Author(s):  
J Ringsberg ◽  
Z Li ◽  
A Tesanovic ◽  
C Knifsund
Keyword(s):  
Sea State ◽  
Linear And Nonlinear

Linear and nonlinear FE analyses of a container vessel in harsh sea state

2014 ◽  
Vol 10 (1) ◽  
pp. 20-30 ◽  
Author(s):  
Jonas W. Ringsberg ◽  
Zhiyuan Li ◽  
Andrea Tesanovic ◽  
Camilla Knifsund
Keyword(s):  
Sea State ◽  
Linear And Nonlinear

Analysis of the Statistical Features of Two-Dimensional Wave Fields by Using Stochastic Simulations of Linear and Nonlinear Sea States

2008 ◽  
Author(s):  
Jose C. Nieto-Borge ◽  
German Rodri´guez-Rodri´guez ◽  
Jose L. A´lvarez-Pe´rez ◽  
Francisco Lo´pez-Ferreras
Keyword(s):  
Statistical Properties ◽  
Stochastic Simulations ◽  
Two Dimensional ◽  
Statistical Features ◽  
Extreme Wave ◽  
Sea State ◽  
Wave Fields ◽  
Linear And Nonlinear ◽  
Dimensional Wave

This work uses stochastic simulations of linear and nonlinear two-dimensional wave fields to analyze some the statistical properties of the extreme wave crests for a given sea state. The studies carried out consider different spatial resolutions and extensions of the simulated sea state.

The Dynamics of Tension Leg Platforms in Waves

1982 ◽  
Vol 104 (1) ◽  
pp. 20-28 ◽  
Author(s):  
T. Yoneya ◽  
K. Yoshida
Keyword(s):  
Statistical Analysis ◽  
Regular Waves ◽  
Nonlinear Analyses ◽  
Sea State ◽  
Response Characteristics ◽  
Frequency Responses ◽  
Nonlinear Responses ◽  
Linear And Nonlinear ◽  
Dynamic Response Characteristics ◽  
Comparison Of The Results

The dynamic response characteristics of the taut-moored platform or the so-called Tension Leg Platform in regular waves are studied both by several series of tank tests and by some simplified methods of linear and nonlinear analyses. By comparison of the results it is shown that the analytical methods are valid and practical. In this paper the nonlinear responses observed in the model tests, as well as the characteristics of the linear frequency responses, are discussed in detail and clarified. In addition, statistical analysis is carried out on a full-scale TLP model in a real sea state.

Linear and Nonlinear Optical Properties of Natural Dyes Freestanding Films and Application in Optical Limiting

2020 ◽  
pp. 139-143
Keyword(s):  
Absorption Coefficient ◽  
Water Solution ◽  
Optical Limiting ◽  
Refraction Index ◽  
Laser Wavelength ◽  
Solid State Laser ◽  
Natural Dyes ◽  
Linear And Nonlinear ◽  
532 Nm ◽  
Absorbance Spectra

Natural dyes were followed and prepared from a pomegranate, purple carrot, and eggplant peel. The absorbance spectra was measured in the wavelength range 300-800 nm. The linear properties measurements of the prepared natural dye freestanding films were determined include absorption coefficient (α0), extinction coefficient (κ), and linear refraction index (n). The nonlinear refractive index n2 and nonlinear absorption coefficient β2 of the natural dyes in the water solution were measured by the optical z-scan technique under a pumped solid state laser at a laser wavelength of 532 nm. The results indicated that the pomegranate dye can be promising candidates for optical limiting applications with significantly low optical limiting of 3.5 mW.

Rheological characterization of tack and viscoelasticity of compositions of crepe coating used in the Yankee dryer

TAPPI Journal ◽  
2019 ◽  
Vol 18 (11) ◽  
pp. 641-649
Author(s):  
JOSHUA OMAMBALA ◽  
CARL MCINTYRE
Keyword(s):  
Normal Force ◽  
Weight Ratio ◽  
Good Combination ◽  
Rheological Characterization ◽  
Nonlinear Viscoelastic ◽  
Coating Composition ◽  
Linear And Nonlinear ◽  
Work Done ◽  
Tissue Production

The vast majority of tissue production uses creping to achieve the required set of properties on the base sheet. The Yankee coating helps to develop the desired crepe that in turn determines properties such as bulk and softness. The adhesion of the sheet to the Yankee surface is a very important characteristic to consider in achieving the desired crepe. The coating mix usually consists of the adhesive, modifier, and release. A good combination of these components is essential to achieving the desired properties of the tissue or towel, which often are determined by trials on the machine that can be time consuming and lead to costly rejects. In this paper, five compositions of an industrial Yankee coating adhesive, modifier, and release were examined rheologically. The weight ratio of the adhesive was kept constant at 30% in all five compositions and the modifier and release ratios were varied. The normal force and work done by the different compositions have been shown at various temperatures simulating that of the Yankee surface, and the oscillatory test was carried out to explain the linear and nonlinear viscoelastic characteristic of the optimal coating composition.

Sign in / Sign up

Export Citation Format

Share Document