Inatal-volume-fraction-geometry
WebFractional part. The fractional part or decimal part [1] of a non‐negative real number is the excess beyond that number's integer part. If the latter is defined as the largest integer not … WebVolume Fraction B This is an Eulerian mesh and a rigid plate. The keyword *INITIAL_VOLUME_FRACTION_GEOMETRY is used to define a metal cylinder inside the …
Inatal-volume-fraction-geometry
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WebApr 13, 2024 · 用关键字*initial_volume_fraction_geometry定义装药位置及形状大小 [11] ,不需要建立装药有限元模型。 2.2 材料模型 靶板采用弹塑性材料模型,炸药采用高速爆炸燃烧材料模型(其参数分别如表1、表2)和jwl状态方程(其参数如表3)来描述压力、体积和内能之间 … WebJul 27, 2024 · 通过ls-dyna数值软件模拟了普通药包和切缝药包在岩石中的爆炸过程,研究了爆炸过程中爆生产物的传播过程及炮孔壁空气应力值特性。结果表明:普通药包和切缝药包炸药内的爆炸过程一致;切缝药包炸药内爆炸完成后,爆生产物在切缝处聚集释放,切缝管在爆生产物的推动下向外移动,切缝方向岩石产生 ...
WebAug 15, 2024 · The keyword *Initial_Volume_Fraction_Geometry is adopted to fill explosive material in Eulerian grids. The keyword *Initial_Detonation is used to trigger the detonation point which is located at the center of the spherical charge, … Web爆炸力学采用爆炸点至结构的距离 R 与药量 W 1/3 的比值(定义为比例距离 Z)作为衡量爆炸超压作用的单位。相同距离 R 的条件下,药量越大,则比例距离越小、产生的超压荷载越大。 采用方法1施加爆炸荷载时需要根据比例距离 Z 计算出超压峰值 P max 与正压作用时间 亨利奇(Henrgeh)在实验基础上得到了 ...
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WebOn the Model pane, enter a descriptive text in the Description field. Select “Discrete Element Model (MFiX-DEM)” in the Solver drop-down menu. 3.3.3. Enter the geometry ¶. On the Geometry pane: Enter 0.15 meters for the maximum x value. Enter 0.90 meters for the maximum y value. Enter 0.004 meters for the maximum z value.
WebVolume Fraction A File cylinder_impact_A.k contains an Eulerian mesh and a rigid plate. Volume Fraction B This is an Eulerian mesh and a rigid plate. The keyword … i must fess that i feel like a monsterWebNov 7, 2024 · Explosion of landmine under soil was defined using the MM-ALE method and the charge is modeled using *INITIAL_VOLUME_FRACTION_GEOMETRY card in LS-DYNA, which needs space co-ordinates of explosive center, shape, and size, and the part to be initially filled with . Soil, explosive and air domains were added as a multi-material ALE … i must finish my homeworkWebMar 18, 2010 · The volume fraction of the velocity inlet in fixed to 0,3. Convergence is ok. Moreover, i saw different works where the volume fraction of the velocity inlet is different … in colour identsWeb3.9.2. Change the initial condition configuration ¶. On the Initial conditions pane, select the “Initial solids” region. Change the Solid 1 volume fraction to 0.4. Note that we are using an hexagonal lattice. On the Run pane, change Stop time to 0.001. We are only interested to look at the initial conditions. in colors find me in parisWebThe examples in this section are from the ALE (Arbitrary Lagrangian Eulerian Method) class of M'hamed Souli. M'hamed Souli is Professor at the University in Lille France. The author is a key developer for the powerful capabilities of the Eulerian Methods in LS-DYNA. The examples run with LS-DYNA 970 and upwards. i must do the will of my fatherWebmm-ale 方法,采用 * initial volume_fraction_geometry. 关键字将 炸药 填充到 空气域 中; 模型大小为 八分之一 模型; 空气域大小:x= 2.5 m;y= 1 m;z= 1 m; 炸药 半径 r= 3 cm; 单元尺寸为 20mm 。 i must find out where my people are goingWebThe *INITIAL_VOLUME_FRACTION_GEOMETRY card defines the initial distribution of air and TNT. It also defines where the TNT is placed, and its initial shape. Initial detonation … in colorado real property taxes are due