A boundary integral method for modelling vibroacoustic energy distributions in uncertain built up structures

A boundary integral method for modelling vibroacoustic energy distributions in uncertain built up structures
复制标题

用于模拟不确定建筑结构中振动声能量分布的边界积分方法

DOI:
10.1016/j.jcp.2018.06.067
复制
发表时间:
2018
影响因子:
4.1
通讯作者:
Bajars J
Bajars J
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Bajars J

文献摘要

参考文献

被引文献

相似文献

本文提出了一种相空间边界积分方法,用于模拟单域和多域随机高频声和振动能量输运问题。数值实现是使用配置法在位置和动量相空间变量。这项工作的主要发展之一是系统的收敛性研究,这表明,所提出的数值方案表现出的收敛速度,可以预期从理论估计在正确的条件下。对于离散化的动量变量,我们采用光谱收敛的基础近似使用勒让德多项式和高斯径向基函数。前者的优点是更简单的应用一般不需要预处理技术。高斯基础的目的是实现更有效的计算在弱噪声的情况下,近确定性动力学。一系列耦合域问题的数值结果,并展示了未来的应用潜力,从工业更大规模的问题。
A phase-space boundary integral method is developed for modelling stochastic high-frequency acoustic and vibrational energy transport in both single and multi-domain problems. The numerical implementation is carried out using the collocation method in both the position and momentum phase-space variables. One of the major developments of this work is the systematic convergence study, which demonstrates that the proposed numerical schemes exhibit convergence rates that could be expected from theoretical estimates under the right conditions. For the discretisation with respect to the momentum variable, we employ spectrally convergent basis approximations using both Legendre polynomials and Gaussian radial basis functions. The former have the advantage of being simpler to apply in general without the need for preconditioning techniques. The Gaussian basis is introduced with the aim of achieving more efficient computations in the weak noise case with near-deterministic dynamics. Numerical results for a series of coupled domain problems are presented, and demonstrate the potential for future applications to larger scale problems from industry.
DOI: --
发表时间: 1999
期刊:
影响因子: --
作者:
W. Desmet;P. Sas;D. Vandepitte
通讯作者: D. Vandepitte
DOI: --
发表时间: 1999
期刊: Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
影响因子: --
作者:
P. Cvitanović;N. Søndergaard;G. Palla;G. Vattay;C. Dettmann
通讯作者: C. Dettmann
5. 多项式插值和聚类网格
DOI: --
发表时间: 2000
期刊:
影响因子: --
作者:
L. Trefethen
通讯作者: L. Trefethen
DOI: 10.1073/pnas.102476599
发表时间: 2002-05
影响因子: 11.1
作者:
Sergey Fomel;J. Sethian
通讯作者: Sergey Fomel;J. Sethian
使用稀疏 Haar 张量基的 Frobenius-Perron 算子的离散化:稀疏 Ulam 方法
DOI: --
发表时间: 2009
影响因子: 2.9
作者:
O. Junge;P. Koltai
通讯作者: P. Koltai