欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
介绍了扩展有限元计算含裂纹板问题的基本方法,该方法以常规有限元为基础,通过在位移场中增加反映裂纹面的不连续函数及反映裂尖局部特性的裂尖渐近位移场函数,体现裂纹的存在,从而使裂纹与有限元模型相互独立,方便了裂纹扩展的模拟。采用求解Reissner板问题的混合插值单元MITC4,可以有效地避免剪切闭锁现象。通过相互作用能量积分确定混合模型的应力强度因子。最后,通过一系列的数值算例验证了该方法的正确性。
英文摘要：
A basic method to model cracks in plates is presented by using the extended finite element method（XFEM）. This method is based on the traditional finite element method, and can conveniently reflect the existence of the cracks by means of increasing discontinuous function and asymptotic displacement function in the standard displacement field. Thus, the crack geometries are independent of the finite element model and this method can greatly facilitate the simulation of crack growth. The mixed interpolation（MITC4） used for solving the problem of Reissner plates is adopted, which can effectively avoid the phenomenon of shear locking. The mixed-mode stress intensity factors are derived by using the interaction integral. Finally, numerical examples are used to illustrate the feasibility and accuracy of this method.
同期刊论文项目
同项目期刊论文
Predictionof stress distribution along the intersection of tubular T-joints by a novelstructural str
Nonlinear lifting theory for unsteady WIG in proximity to incident water waves. Part 1: Two-dimensio
A numerical study of whole ship structural damage resulting from close-in underwater explosion shock
Active Thermometry Based DS18B20 Temperature Sensor Network for Offshore Pipeline Scour Monitoring U
Experimental investigation of the interaction of multidirectional irregular waves with a large cylin
Time-domain numerical and experimental analysis of hydroelastic response of a very large floating st
Research of concrete residual strains monitoring based on WLI and FBG following exposure to freeze-t
Numerical studies on sloshing in rectangular tanks using a tree-based adaptive solver and experiment
Numerical and experimental analysis of hydroelastic response on a very large floating structure edge
Development of a regional coastal management decision-aided system. Part A: Establishment of an auto
Vortex shedding from a two-dimensional cylinder beneath a rigid wall and a free surface according to
Nonlinear lifting theory for unsteady WIG in proximity to incident water waves. Part 2: Three-dimens
Second-order coupling of numerical and physical wave tanks for 2D irregular waves. Part II: Experime
Direct Time Domain Numerical Analysis of Transient Behavior of a VLFS during Unsteady External Loads
Coupled wind-wave time domain analysis of floating offshore wind turbine based on Computational Flui
Thickness distribution and extent of sea ice and snow in Prydz Bay and surrounding waters observed i
Application of support vector machine for pattern classification of active thermometry-based pipelin
Coupled control of the horizontal and vertical plane motions of a semi-submersible platform by a dyn
BP neural network recognition algorithm for scour monitoring of subsea pipelines based on active the
Second-order coupling of numerical and physical wave tanks for 2D irregular waves. Part I: Formulati
Numerical study of transient harbor resonance induced by solitary waves resonance induced by solitar
期刊信息
位置：