نتایج جستجو برای: radial point interpolation

تعداد نتایج: 611870  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده فنی 1394

در این تحقیق به بررسی و مقایسه تاثیر سازه های آبشکن نفوذپذیر و نفوذناپذیر بر مورفولوژی کف رودخانه در دو بعد پرداخته شده است. برای پیدا کردن روش حل عددی مناسب، مقایسه ای میان روش های بدون شبکه radial point interpolation method(rpim)، element free galerkin و روش اجزا محدود انجام شده است. نتیجه این تحقیق کارایی روش (rpim) را نسبت به سایر روش ها نشان می دهد. برای بدست آوردن تغییرات بستر از روش آب ه...

Journal: :computational methods in civil engineering 2012
a. ghahramani s.m. binesh n. hataf

in this paper, the linearly conforming enriched radial basis point interpolation method is implemented for the elasto-plastic analysis of discontinuous medium. the linear conformability of the method is satisfied by the application of stabilized nodal integration and the enrichment of radial basis functions is achieved by the addition of linear polynomial terms. to implement the method for the ...

Journal: Journal of Nanoanalysis 2017
Elyas Shivanian, Hedayat Fatahi, S. J. Hosseini Ghoncheh

The present paper is devoted to the development of a kind of spectral meshless radial point interpolation (SMRPI) technique in order to obtain a reliable approximate solution for buckling of nano-actuators subject to different nonlinear forces. To end this aim, a general type of the governing equation for nano-actuators, containing integro-differential terms and nonlinear forces is considered. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان 1388

روش rpim (radial point interpolation method) بر پایه روش ضعیف گالرکین و توسط g.r liu و gu در سال 2001 توسعه یافته است. این روش یکی از روشهای بدون شبکه است که برای تقریب تابع با استفاده از چندجمله ای ها مورد استفاده قرار می گیرد. همچنین این روش برای حل مسائل مکانیک از قبیل رشد ترک و یا تغییر شکل های بزرگ کاربرد دارد که روش المان محدود در حل این مسائل با نارسائی هایی روبرو است. ساخت تابع شکل با ا...

Journal: :international journal of advanced design and manufacturing technology 0
mohamadmehdi najafzadeh majid alavi alireza nezam abadi mohsen kogani mehdi abbasi

in the recent paper, one of the numerical methods without element, for static analysis of thin plates displacement based on classical plates theory (cpt), has been presented. in this method, the domain of problem solving is shown only by the means of a set of nodes, and there is no need to any mesh scheme or element. one of the kinds of element free methods used here is the radial point interpo...

Journal: :international journal of industrial mathematics 2015
s. abbasbandy e. shivanain

the meshless local radial point interpolation (mlrpi) method is applied to examine the magnetohydrodynamic (mhd) ow of third grade uid in a porous medium. the uid saturates the porous space between the two boundaries. several limiting cases of fundamental ows can be obtained as the special cases of present analysis. the variations of pertinent parameters are addressed.

E. Shivanain S. Abbasbandy,

The meshless local radial point interpolation (MLRPI) method is applied to examine the magnetohydrodynamic (MHD) ow of third grade uid in a porous medium. The uid saturates the porous space between the two boundaries. Several limiting cases of fundamental ows can be obtained as the special cases of present analysis. The variations of pertinent parameters are addressed.

ژورنال: پژوهش های ریاضی 2022

Optimization using radial basis functions as an interpolation tool in trust-region (ORBIT), is a derivative-free framework based on fully linear models to solve unconstrained local optimization, especially when the function evaluations are computationally expensive. This algorithm stores the interpolation points and function values to using at subsequent iterations. Despite the comparatively ad...

B Soltani, Sh Hosseini

In this paper, bending analysis of concentric and eccentric beam stiffened square and rectangular plate using the meshless collocation method has been investigated. For detecting the governing equations of plate and beams, Mindlin plate theory and Timoshenko beam theory have been used, respectively, with the stiffness matrices of the plate and the beams obtained separately. The stiffness matric...

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