..., and macroscopically presents the characteristics of "hard first and then soft" with the amount of deformation. Although it can improve the crashworthiness of the structure, the disadvantage is that plastic deformation occurs during the collision process due to this characteristic. However, the negative Poisson's...

... subdiscipline tunnel lining poisson filling geologist reservoir characterization shield tunnel displacement schematic diagram strata deformation high earthquake structural geology lining stratigraphic stratification shield tunnel lining structure operation safety evaluation Proceedings...

... is the Poisson's ratio, and i = (1 + i ) / (1 i ) is set to simplify the equation. Additionally, the elastic modulus, shear modulus, and Poisson ratio satisfy the following relationship Gi = Ei / 2(1 + i ) . Establishing the compatibility equations for the two plates The equilibrium relationship between...

... ABSTRACT The special properties of negative Poisson's ratio structures make them show more advantages in energy absorption and fracture resistance. In this paper, a new three-dimensional star-shaped negative Poisson's ratio structure is proposed, and the equivalent density expression...

... qualification geology configuration method mini-burst coupon composite thickness coupon hoop strength thermoplastic composite pipe poisson composite pipe milan bujdoso reservoir geomechanics pipe split-d coupon test method calculation Proceedings of the Thirty-fourth (2024) International Ocean...

... ABSTRACT The paper studies buckling behaviour of externally pressurized torispherical shells made from auxetic metal (with Negative Poisson's Ratio, NPR). It is shown that the largest gains in magnitude of buckling load are obtained for NPR approaching −1.0. Results quantifying sensitivity...

..., and would be used in the development of novel light weight energy absorbing honeycomb structure for ship side anti-collision. INTRODUCTION Negative Poisson's ratio structures undergo a transverse contraction when subjected to longitudinal compression, or undergo a lateral expansion under longitudinal...

... under the quasi-static algorithm and dynamic relaxation algorithm are derived,respectively. The two algorithms are applied to the simulations, respectively. By conducted two typical simulations It is proved that the two-parameter model can solve the problem of fixed Poisson's ratio, and the correctness...

... interaction between structure and flow field. bottom panel numerical calculation wave surface subsea equipment poisson fluid-structure interaction boundary multiphase flow water domain stiffness algorithm fluid dynamics subsea system upstream oil & gas ale algorithm ocean engineering...

... velocity velocity profile poisson dispersion curve soil stiffness shear wave velocity stratigraphy deflection log analysis well logging upstream oil & gas stiffness in-situ small strain soil stiffness Comparison of Laboratory and in-situ Small Strain Soil Stiffness for Modelling Lateral...

... considered in the subsea industry is the Auxetic composite material that possess a negative Poisson's ratio behavior due to its complex structure and its unique deformation mechanism. This paper will attempt to provide insight into the novel auxetic composite structures and opens new avenues to design...

... and Polar Engineers (ISOPE) ISBN 978-1-880653-97-5; ISSN 1098-6189 www.isope.org Further, Young s modulus ( , )E z T , Poisson s ratio ( , )z T , heat conductivity ( , )K z T and thermal expansion coefficient ( , )z T can be obtained . Temperature rise To consider the thermal effects on the FGMs, uniform...

...., 1997) and gas lubricated (Zhou et al., 2009) thrust bearing. lubrication performance poisson cfd-fsi model water film solid domain steel bearing outer radius bearing surface layer thrust bearing ratio 0 rotation disc 5 thickness mesh density film thickness rubber cushion step...

... modulus ratio and Poisson's ratio. numerical analysis equation upstream oil & gas poisson rectangular crack noda international journal composite material modulus ratio substrate dimensionless stress intensity factor intensity factor numerical solution stress intensity factor...

... brine gidrometeoizdat freshwater ice wellbore design strength important characteristic kheysin thickness friction doronin ryvlin deformation reservoir characterization mechanical property poisson formula sea ice vershinin leningrad coefficient Review and Research of Physical...

... (Gilles, G, David, G, and Aaleksandr M, 1999) in oceans are all resulted by NGH dissociation. pipe soil layer overlayer sediment poisson deformation thickness dissociation scale numerical model reservoir characterization dissociation zone instability ngh dissociation settlement...

... on a deep soft ground. Lateral displacement, however, is notoriously difficult to predict even approximately, to overcome this, we also investigate the effects of Poisson's ratio on the deformation analysis. The analytical results obtained by the present methods are found to be reasonable, considering...

... reservoir geomechanics inhomogeneity anisotropic ellipsoidal inhomogeneity voigt model relation fraction composite material poisson coordinate system shear modulus upstream oil & gas fiber ellipsoidal inhomogeneity Elastic Properties of Composite Material with Anisotropic Ellipsoidal...

... sand and sandy silt. Cylindrical specimens were drilled from the site and tested in the laboratory. Experimental results show that the elastic wave velocities, modulus of elasticity, and uniaxial compressive strength of soilcrete increase with increasing dry density. Poisson's ratio of soilcrete varies...

... oil & gas neutron diffraction method load increase minakawa tensile test poisson stress measurement residual stress texture test specimen diffraction plane diffraction method experiment industrial material lattice Measurement of Elastic Constant of Various Industrial Materials...