Accuracy of the extended boundary element method analyzing the stress fields of V-notched/cracked st

来源 :中国计算力学大会2018暨国际华人计算力学大会2018 | 被引量 : 0次 | 上传用户：conanjunn

【摘要】

：

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.

【作者】

：

Cong Li Zhongrong Niu Bin Hu Changzheng Cheng

【机构】

：

School of Civil Engineering,Hefei University of Technology,Hefei 230009,China

【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

【关键词】

：

V-notch/crack stress field extended boundary element method asymptotic expansion

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

　　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.

其他文献

基于等几何分析的多片拼接算法及在热传导问题中的应用

利用等几何分析思想推导出热传导问题的等几何分析控制方程。提出一种多片拼接算法并对热传导问题进行高精度求解，将此方法应用于带孔结构和弯曲圆柱热传导问题中，并将计算结果与解析解和有限单元方法进行对比。结果表明：此方法具有自由度少、精度高、划分网格少等优点。

会议

等几何分析多片拼接热传导

A viscosity-based model of bubble-propelled catalytic micromotors

Micromotors are one kind of small devices that can move themselves by converting environmental energy into kinetic energy when dissolved in special solutions.

会议

Bubble-propelled tubular micromotorMotionMechanic principle

Analysis of Power Transmission Coefficient with the Coupled beam in Thermal Environments

Hypersonic vehicle will encounter noise load,thermal load,and mechanical load and other complex mechanical environment in the cruise and reentry phases.

会议

Thermal environmentcoupled beampower transmission coefficient

Linear tracking control of snake like robot based on neural network identification

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.

会议

snake like robotneural network identifiercascade controllinear tracking

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.

会议

Orthotropic plateBeam-plate coupling systemPower transmission coefficientCoup

A benchmark study on the surface mesh for numerical computation of a half-space inclusion problem

Near surface non-elastic strains may be effectively modeled as inclusions in an elastic half-space.

会议

Surface MeshFFT AlgorithmHalf-Space InclusionTruncation Error

相变传热问题的自适应四叉树-比例边界元方法

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。

会议

相变传热自适应加密四叉树比例边界元等效热容法

固体发动机在吊挂条件下的力学特性研究

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

会议

固体发动机吊挂约束有限元方法力学特性

2D acoustic shape sensitivity analysis using adjoint variable method and isogeometric BEM with fast

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.

会议

Isogeometric analysisBoundary element methodFast multipole methodBurton-Mille

Numerical Investigations on the Fictitious Eigenfrequency Problem of the BEM

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.

会议

Boundary element methodWave propagation problemsFictitious eigenfrequencyBurt

Accuracy of the extended boundary element method analyzing the stress fields of V-notched/cracked st

与本文相关的学术论文