5 点击界面左侧的【material edit】图标，如图所示，点击create创建新的材料，并在弹出的面板上选择【mechanic】-【damage for ductile metal】-【Johnson-Cook damage】，这个就是Johnson-Cook损伤模型了 6 在Johnson-Cook损伤模型中填入相关的参数，最好采用试验值，这样我们就完成了Johnson-Cook损伤模型的定义 注意事...
For describing the material removal during chip formation, a modified thermodynamically consistent formulation of the Johnson-Cook damage model was used. The model was implemented in the ABAQUS/Explicit finite element solver with a user-defined subroutine, and the experimental validation was performed ...
Foreignobjectdamage(FOD)eventstofan/compressorbladesoftenoccurduringthe operationofaeroengine.Theyareverydangeroustotheflyingsaftyofaeroengineandaircraft. NumericalmodelingofFODbasingJohnson-Cookmaterialmodelisperformedinthispaper. Johnson-Cookmaterialmodel(includingconstitutivemodelandfailuremodel)wasstudied. ...
Based on this investigation, the Johnson–Cook material and damage model is suitable for such simulations. The deviation between simulation and test increases with increasing deflection of the specimens. For specimens that fully absorb the impact energy, the deviations are larger than for those that ...
It co&d be that the damage does not accumulate in the manner specified by the model. It could also be that the model and/or data do not extrapolate into the more extreme regions of strain rate, temperature and/or pressure. Also, the fracture status of the OFHC copper and Armco iron ...
国产C30混凝土考虑率型微损伤演化的改进Johnson-Cook强度模型
(2006)增 1– 3250– 08IMPROVED JOHNSON-COOK′ ′′′S STRENGTH MODEL TAKING ACCOUNTOF RATE-DEPENDENT MICRO-DAMAGE EVOLUTION FORDOMESTIC C30 CONCRETESHI ShaoqiuWANG YongzhongWANG Lili(Facultyof EngineeringNingbo University NingboZhejiang 315211China)AbstractThe dynamic mechanical behavior of C30 concrete ...
TC4合金应变率和温度相关变形的Johnson—Cook模型季玉辉,束迎东,胡绪腾(南京航空航天人学能源与动力学院.南京2IOOl6)摘要;#《IC4☆&的..
2.2. Damage Model The damage in the HJC model is formed by the accumulation of plastic strain. Plastic strain has two parts: shear deformation plastic strain (equivalent plastic strain) and volume compressive plastic strain, as shown in Fig. 2. The damage model is expressed as follows: Downloa...
The damage parameters of Johnson–Cook failure model were determined through experiments on flat tensile specimens in combination with finite element simulation. Using these materials parameters, finite element simulations were performed on notch specimens of different radii between 2 mm and 20 mm loaded...