论文部分内容阅读
We demonstrate a method for simulating medium-wave acoustic scattering over elastic thin shell structures with an isogeometric approach.
An Isogeometric Boundary Element Method for Structural-Acoustic Analysis
【摘 要】
：
We demonstrate a method for simulating medium-wave acoustic scattering over elastic thin shell structures with an isogeometric approach.
【机 构】
：
School of Engineering,University of Glasgow,University Avenue,Glasgow,G12 8QQ,UK
【出 处】
：
中国计算力学大会2018暨国际华人计算力学大会2018
【发表日期】
：
2018年10期
其他文献
Snake like robot dynamic model is established based on the balance principle.And the dynamic model is separated by the driving quantity and the non driving quantity.
Analysis of Elastic Wave Transmission Characteristics Between Beam and Orthotropic Plate Coupling Sy
The composite material has been widely used in many engineering fields,such as aerospace and automotive industry.
Near surface non-elastic strains may be effectively modeled as inclusions in an elastic half-space.
相变传热问题具有重要的工程应用背景。由于只有少数特殊的相变问题具有解析解，因此，数值分析的研究具有重要的意义。相变传热问题数值计算的关键在于处理随着时间移动的两相界面，由于强非线性的存在，因此界面处的数值误差是影响算法精度和效率的关键因素。
固体发动机具有复杂的结构特征,在吊挂条件下的力学特性是一个新的研究课题。本文运用有限元软件ABAQUS,建立固体发动机结构的简化模型及相应的约束模型,研究贮存条件和不同吊挂条件约束下发动机结构的静动态特性,包括发动机结构中壳体和药柱的应力应变分布、发动机结构的固有特性以及随机载荷作用下发动机结构的响应谱分析。结果 表明,吊挂是一种比贮存更为恶劣的约束,不同吊挂条件下发动机结构的各部分特性又有显著不
According to the concept of isogeometric analysis(IGA),Non-Uniform Rational B-splines(NURBS)are used to describe the geometry and approximate the physical fields.
The BEM has emerged as a powerful numerical tool for several decades to solve many engineering problems,especially the acoustic and electromagnetic wave propagation problems.
Accuracy of the extended boundary element method analyzing the stress fields of V-notched/cracked st
According to the theory of linear elasticity,the numerical methods are difficult to calculate the singular stress field in a V-notch/crack tip region.
In this paper,the recently developed hybrid numerical method based on isogeometric analysis(IGA)and boundary element method(BEM),named as IGABEM,is further extended to study steady and transient heat
This work applies acoustic topology optimization technique for structure surface design with porous materials,where the fast multipole boundary element method(FMBEM)is employed for sound scattering an