نتایج جستجو برای: matrix element

تعداد نتایج: 555879  

2004
G. Corcella S. Moretti

We implement matrix-element corrections to HERWIG parton shower simulations for Standard Model Higgs boson production at hadron colliders. We study the Higgs transverse momentum distribution and compare different versions of HERWIG and resummed calculations. The HERWIG results exhibit a remarkable improvement as many more events are generated at large transverse momentum after the inclusion of ...

2014
Shuang Li Jinjun Hu Changhai Zhai Lili Xie

An approach to analyzing structures by using beam elements is developed with adaptive displacement interpolation functions. First, the element stiffness matrix and equivalent nodal loads are derived on the basis of the equilibrium between nodal forces and section forces rather than the compatibility between nodal deformations and section deformations, which avoids discretization errors caused b...

2015
Nick Cramer Sean Swei Kenny Cheung

The current emphasis on increasing aeronautical efficiency is leading the way to a new class of lighter more flexible airplane materials and structures, which unfortunately can result in aeroelastic instabilities. To effectively control the wings deformation and shape, appropriate modeling is necessary. Wings are often modeled as cantilever beams using finite element analysis. The drawback of t...

Journal: :journal of solid mechanics 0
k torabi faculty of mechanical engineering, university of isfahan, isfahan, iran h afshari faculty of mechanical engineering, university of kashan, kashan, iran h najafi department of solid mechanics, faculty of mechanical engineering, politecnico di milano, milan, italy

in this paper, exact solution for two-plane transverse vibration analysis of axial-loaded multi-step timoshenko rotor carrying concentrated masses is presented. each attached element is considered to have both translational and rotational inertia. forward and backward frequencies and corresponding modes are obtained using transfer matrix method (tmm). the effect of the angular velocity of spin,...

A new three-dimensional unit cell model has been developed for modeling three constituent phases including inclusion, interphase and matrix. The total elastic modulus of nano-composite is evaluated.  Numerical results are in good agreement with the previous proposed theoretical modeling. Higher matrix and inclusion elastic modulus both can dramatically influence the total elastic modulus.

1996
Martin J. Savage

We examine the effects of SU(3) breaking in the matrix elements of the flavour-diagonal axial currents between octet baryon states. Our calculations of K, η and π loops indicate that the SU(3) breaking may be substantial for some matrix elements and at the very least indicate large uncertainties. In particular, the strange axial matrix element in the proton determined from the measurements of g...

2002
Johan Malmqvist

In the development of complex products considerations of the product structure and relations within the product are crucial. Matrix-based product modeling methods can support this activity by, for example, visualizing the relationships in products. This paper proposes a classification of matrix-based methods with respect to scope and content. With respect to scope, element-level matrices, produ...

2008
A. Knittel M. Franchin G. Bordignon T. Fischbacher S. Bending H. Fangohr

A hybrid finite element method/boundary element method (FEM/BEM) is a standard approach for calculating the magnetostatic potential within Micromagnetics [1]. This involves dealing with a dense N ×N -matrix Bij , N being the number of mesh surface nodes. In order to apply the method to ferromagnetic structures with a large surface one needs to apply matrix compression techniques on Bij . An eff...

2007
Andrej Brodnik Milena Kovač Špela Malovrh

This paper introduces a novel data structure used to store sparse matrices optimally – minimizing the space of the matrix representation and the time complexity of an access to the matrix element. The size of our data structure is close to the information theoretic minimum – it differs in the second order term – and permits constant access to the matrix elements and a constant amortized time wi...

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