Hybrid smoothed finite element method for two-dimensional underwater acoustic scattering problems

2016 ◽  
Vol 116 ◽  
pp. 129-141 ◽  
Author(s):  
Yingbin Chai ◽  
Wei Li ◽  
Zhixiong Gong ◽  
Tianyun Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Acoustic Scattering ◽  
Two Dimensional ◽  
Scattering Problems ◽  
Underwater Acoustic ◽  
Smoothed Finite Element Method ◽  
Element Method ◽  
Acoustic Scattering Problems

scholarly journals Smoothed finite element method for two-dimensional elasto-plasticity

2009 ◽  
Vol 31 (3-4) ◽  
Author(s):  
Stéphane Pierre Alain Bordascorres ◽  
Hung Nguyen-Dang ◽  
Quyen Phan-Phuong ◽  
Hung Nguyen-Xuan ◽  
Sundararajan Natarajan ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Two Dimensional ◽  
Fe Method ◽  
Mesh Distortion ◽  
Elasto Plasticity ◽  
Smoothed Finite Element Method ◽  
Displacement Based ◽  
Theoretical Developments ◽  
Element Method

This communication shows how the smoothed finite element method (SFEM) very recently proposed by G. R. Liu [14] can be extended to elasto-plasticity. The SFEM results are in excellent agreement with the finite element (FEM) and analytical results. For the examples treated, the method is quite insensitive to mesh distortion and volumetric locking. Moreover, the SFEM yields more compliant load-displacement curves compared to the standard, displacement based FE method, as expected from the theoretical developments recently published in [4], [3] and [6].

FINITE ELEMENT SOLUTION OF TWO-DIMENSIONAL ACOUSTIC SCATTERING PROBLEMS USING ARBITRARILY SHAPED CONVEX ARTIFICIAL BOUNDARIES

2000 ◽  
Vol 08 (01) ◽  
pp. 81-99 ◽  
Author(s):  
RABIA DJELLOULI ◽  
CHARBEL FARHAT ◽  
ANTONINI MACEDO ◽  
RADEK TEZAUR
Keyword(s):  
Finite Element ◽  
Finite Element Methods ◽  
Computational Efficiency ◽  
Acoustic Scattering ◽  
Two Dimensional ◽  
Element Solution ◽  
Scattering Problems ◽  
Nonreflecting Boundary Conditions ◽  
Artificial Boundaries ◽  
Acoustic Scattering Problems

For elongated scatterers such as submarines, we show that the generalization of the Bayliss–Turkel nonreflecting boundary conditions to arbitrarily shaped convex artificial boundaries improves significantly the computational efficiency of finite element methods for the solution of acoustic scattering problems.

Sign in / Sign up

Export Citation Format

Share Document