نتایج جستجو برای: slamming force

تعداد نتایج: 188450  

Journal: :Kapal 2022

Choosing the right hull shape is important in designing a ship, for example, U-section or V-section of hull. The will affect various aspects, such as design, resistance, seakeeping, structure and production. ship must be properly designed so that it can operate according to ship’s mission. From seakeeping aspect ship's motion at sea, difference result different motions dynamic effects slamming ...

ژورنال: علوم و فنون نظامی 2005
شاپور جلیلیان فیلیپ کارتر

     گسترش مقاومت داخلی در عراق که باعث کشته شدن بیشتر از 120 نفر از نظامیان آمریکایی تنها در ماه آوریل سال 2004 گردید موجب شد تا پنتاگون درخواست نماید تعداد 30000 نیروی دیگر به عراق اعزام گردد، همچنین مقام های ارشد نظامی تقاضای بودجه نظامی بیشتری را از کنگره نموده اند، تا از آن در جهت ادامه عملیات در عراق و جایگزینی نیروهای خارج شده از آن کشور استفاده نمایند . حتی اگر دستور اعزام نیروها همین ح...

Journal: :international journal of nanoscience and nanotechnology 2013
m. h. korayem z. rastegar a. h. korayem a. e. heidari

in this paper, the effect of air relative humidity and capillary force on contact geometry of surfaces based on jkr model by atomic force microscopy was investigated in order to manipulate nano-particles. with transition from macro to nano-scale, the effect of surface forces becomes more significant in comparison with inertial force. because contact mechanics models are based on surface energy ...

Journal: :Physical review fluids 2021

A solid plate about to slam onto a water surface makes it presence felt before the actual contact by squeezing out mediating air cushioning layer. This layer has regions of low and high pressures. At point (stagnation) pressure, is deflected away from impactor. While in pressure region, Kelvin-Helmholtz instability initiates suction towards Using new measuring technique we measure such deflecti...

Journal: :Ocean Engineering 2021

A numerical simulation method is presented by integrating Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) solvers to predict ship wave loads slamming taking into account hydroelastic effects. The interest of this study mainly lies in the green water pressures acting on a flexible investigated coupled CFD–FEA method. Firstly, verification sensitivity analysis S175 containers...

Journal: :Ocean Engineering 2021

Air gap is a critical design consideration for semi-submersible platform. Wave slamming will easily occur the platform with small air gap, resulting in serious damage to and endangering safety of personnel. Current studies on response paid little attention effects mooring system response. In this study, stiffness under extreme sea conditions were studied based numerical model validated by exper...

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