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1、下面是就他们模拟的问题所设置的刚度值汇总 手册里跟理论吻合的模拟参数 Verify1 Tip-Loaded Cantilever Beam2 Energy Computations示意图同上刚度同上3 Collisions with a Particle Assemblyprop dens 1 ks 1 kn 1 ; give all balls same properties4 Porosity Computations静止状态测量圆测量孔隙率5 Verification of the Hertz-Mindlin Contact Model in PFC2DiGs/lR3(1 - v)(5.
2、1)验证这两个公式prop dens 1000 shear 1e8 prop dens 1000 shear 1e8poiss 0.25poiss 0.25 fric givenfric6 Relation between Restitution Coefficient and DampingConstant(6.1)By substituting 疋o = 0Hence, the resriturion coefficient a is given by (6.10):(6.10)a =kn= 1.0e5Examples1 单轴压缩试验2 Core Flow versus Mass Flow
3、 HopperPFC2D 3 A #Sap20000 17:21:59 Wed Jul2S2Q04S iz s:X: -3.370e-000 = S. 95 Ba-300Y: -S.000e-001 12SO0KJO1WallBallVelocityMaximum = 2.294e 000Linmstyle Itasca Cansufiing Group, Inc. klnnaapalE, MN USAJob Title: Slaraga Hopper Tesi - Core Flow HopperFigure 2.2 Core flow hopper after 5000 steps sho
4、wing the development of core jio with intact marker lines on the sides of the hopperwall id 1 kn 1e6 ks 1e6 fric 0.0 node 0 12 0 0 prop kn 1e6 ks 1e6 dens 1000PFC2D 3 JOStap 84 12:12:2S Mon Oct 0斗 2004OO O0oJon 丁在妇：Icfem 记勿 nira bBck-cavin g proses石Job Trt.s; Granularfcw from a hopperga T ftm： Fz mf
5、tmr 曲.ationpfiz owm wm 脚占 HDppe2.D.4T：iVtsrA- Siza:X: -5.59-331 5.5DD932 1.35Sa-002Y: -1.233ri-3-32 2.29 5a-002BaLICForce CliainsBCdmpras&sn Tsn-ianMajdELiE = 1.27Bs-03flContactWallJias3 Consufting Group, Inc. hTnnmmpolis, Mh USAFigure 4.3 Model state later in the caving process, jith superimposed f
6、orces5 Rockfallcl_kn = 1e7 ; particle normal stiffness cl_ks = 1e7 ; particle shear stiffness mt_ks = 1e7 ; mountain wall shear stiffness mt_kn = 1e7 ; mountain wall normal stiffness6 Dynamics of a Beam-Column Structure1J J JJiJrtiJ非柑柑13JIFigure 6.4 Structural configuration with all bonds intact (t
7、= 1.53 seconds)Ha5a Consulting Group, Inc. h4nrimmudis,Mhi USAbb 一忆 m: DynaE&s of 旨 bamn-ounri strMjrmHallBal!PBn nd L ocatLoiisVeLocityMaximum = 4.15 3a-D DOLinastyls 邛is讥,Siza:X: -4.53DS-001 1.216s002Y: -5.14DS-001 1.299S-D02PFC2D 3.10Slap 3354 14 2554 Tua Aug 03 2004prop kn 1e8 ks 1e8 dens 2500prop pb_rad=1.0 pb_kn=1e8 pb_ks=1e8 pb_nstren=1e10 pb_sstren=1e10 &7 Wave Propagation in Particle Assemblies&(r) = (l 一 cos(2兀)(7.10)模拟波的传播8 Incorporation of Fluid Coupling in PFC2D
