نتایج جستجو برای: basic displacement functions bdfs

تعداد نتایج: 793205  

B.K Mishra I.V Singh, K Sharma, S.K Maurya

In this work, XFEM is employed to obtain the stress intensity factors (SIFs) of a semi elliptical part through thickness axial crack. In XFEM, additional functions are employed to enrich the displacement approximation using partition of unity approach. Level set functions are approximated using higher order shape functions in the crack front elements to ensure the accurate modeling of the crack...

Journal: :journal of mechanical research and application 2009
reza salami naserian vahid kadkhodaei

in this paper, the axisymmetric corrugated diaphragm using finite element method will be discussed, so that half of these diaphragms’ cross sections and later the applied pressure will be considered. following this, using the consequent equations and visual basic software, a computer program will be provided which receives the diaphragms’ particulars such as diameter, thickness, pressure and th...

Journal: :journal of solid mechanics 0
r moradi-dastjerdi school of mechanical engineering, shahid rajaee teacher training university (srttu), tehran, iran g payganeh school of mechanical engineering, shahid rajaee teacher training university (srttu), tehran, iran m tajdari department of mechanical engineering, arak branch, islamic azad university, arak, iran

in this paper, the effects of carbon nanotube (cnt) orientation and aggregation on the static behavior of functionally graded nanocomposite cylinders reinforced by cnts are investigated based on a mesh-free method. the used nanocomposites are made of the straight cnts that are embedded in an isotropic polymer as matrix. the straight cnts are oriented, randomly or aligned or local aggregated int...

ژورنال: مهندسی دریا 2006
بهزاد, مهدی, سلماسی, حمید, سیف, محمدسعید, کاظم زاده حنانی, سیامک,

In this paper, several models of structure-fluid coupling are employed to investigate on the vibration behavior of the structure. Using basic equations of vibration and employing a mathematical model, a single degree of freedom system is analyzed. Some parameters of the mathematical model are obtained from test. To examine structure-flow interaction, coupled system of nonlinear second-order dif...

Journal: :international journal of advanced design and manufacturing technology 0
payman naderpour najafabad branch, islamic azad university, najafabad, iran aazam ghassemi najafabad branch, islamic azad university, najafabad, iran nosratollah solhjoei najafabad branch, islamic azad university, najafabad, iran

in this paper the nonlinear bending analysis of thick functionally graded plates subjected to mechanical loading is studied. the formulation is derived based on the third-order shear deformation plate theory and von kármán type non-linearity. young’s modulus is assumed to vary according to a power law distribution in terms of the volume fractions of the constituents. the principle of virtual wo...

2007
J. R. BARBER

If a complete circular ring is subjected to a known, selfequilibrating system of forces, the equations of equilibrium are not sufficient to determine the internal forces and moments. In certain cases, the defect can be made up by arguments from symmetry, but it is usually necessary to impose the condition of continuity of displacements around the ring. This condition is often greatly simplified...

Journal: :J. Inform. and Commun. Convergence Engineering 2010
Kwang-Ryol Ryu Young Bin Kim

— Moving pixel displacement detection algorithm using correlation functions for making panorama image on the continuous images is presented in this paper. The input images get from a CMOS image sensor (CIS). The camera is maintained by constant brightness and uniform sensing area in test input pattern. For simple navigation and capture image has to 70% overlapped region. A correlation rate in t...

2003
Douglas N. Arnold Ragnar Winther DOUGLAS N. ARNOLD RAGNAR WINTHER

We present a family of pairs of finite element spaces for the unaltered Hellinger–Reissner variational principle using polynomial shape functions on a single triangular mesh for stress and displacement. There is a member of the family for each polynomial degree, beginning with degree two for the stress and degree one for the displacement, and each is stable and affords optimal order approximati...

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