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发表于 2005-8-31 15:29
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回复:(fft)[分享]ANSYS与ADAMS接口
运行ADAMS宏之前只选择将作为外部节点使用的节点,在运行宏命令ADAMS之前只选 <BR>择作为外 <BR>部节点的节点,因为ADAMS宏会将此时选择的节点作为外部节点处理,因而此选择 <BR>步骤不可 <BR>缺 <BR>缺 <BR>少。 <BR><BR>运行宏ADAMS,_NMODES生成ADAMS程序所需要的模态中性文件,模态中性文件.MNF <BR>中包含了 <BR>柔 <BR>性体的质量,质心,转动惯量,频率,振型以及对载荷的参与因子等信息。 <BR>ANSYS与ADAMS接口示例 <BR><BR>下面是一个在ANSYS中生成模态中性文件的例子: <BR><BR>生成模态中性文件的命令流 <BR><BR>/title, ADAMS interface - simple connecting rod with constraint <BR>equations <BR>c*** This represents a connecting rod using the following features: <BR>c*** SOLID45 to represent the rod <BR>c*** constraint equations to represent the pin <BR>c*** MASS21 for the pin center <BR><BR>/units,bin <BR>pi = 3.14159 <BR>/prep7 <BR>c*** define rod width, length and pin radii (all in meters) <BR>w=.015 <BR>w=.015 <BR>l=.225 <BR>r1=.0125 <BR>r2=.025 <BR><BR>c*** convert to inches <BR>w=w*39.37 <BR>l=l*39.37 <BR>r1=r1*39.37 <BR>r2=r2*39.37 <BR>mp,ex,,2.1e9*1.45e-4 <BR>mp,nuxy,,.3 <BR>mp,dens,,7800*1.94e-3/12**3/12 ! convert to "pound_mass" inch-based <BR>slug <BR><BR>c*** define pins <BR>et,2,21 <BR>r,2, .001*.06852,.001*.06852,.001*.06852 <BR>type,2 <BR>real,2 <BR>n,2000 <BR>n,2001,,,.225*39.37 <BR>e,2000 <BR>e,2001 <BR>e,2001 <BR>c*** define connecting rod - take into account pin radii <BR><BR>et,1,45 <BR>type,1 <BR>real,1 <BR>n,1,-w/2,-w/2,r1 <BR>n,2,w/2,-w/2,r1 <BR>ngen,2,2,1,2,1,,w <BR>ngen,11,10,1,4,1,,,(l-r2-r1)/10 <BR>e,1,2,4,3, 11,12,14,13 <BR>egen,10,10,-1 <BR><BR>c*** pins are rigid - use constraint equations <BR>cerig,2000,1 <BR>*repeat,4,,1 <BR>cerig,2001,101 <BR>*repeat,4,,1 <BR><BR>c*** delete rotational CE's (to get clean run) <BR>cedel,4,6 <BR>*repeat,8,6,6 <BR>finish <BR>finish <BR>c*** select pin nodes and compute data for ADAMS interface <BR>nsel,s,node,,2000, 2001,1 <BR>adams,6 <BR>! end of sample input test <BR><BR>在ADAMS软件中生成ANSYS所需要的载荷文件(.lod文件) <BR><BR>进入ADAMS程序,建立机械系统的刚性部件,读入模态中性文件.mnf以建立柔性体 <BR>的模型, <BR>指 <BR>定柔性体与刚性体的连结方式,按实际情况定义载荷和边界条件进行机械系统的运 <BR>动学分析 <BR>。在分析完成后输出ANSYS软件所需要的载荷文件(.lod文件)。此文件包含了对应 <BR>于运动过 <BR>程 <BR>中不同时刻点柔性体的运动状态和所承受的载荷等信息(例如力,力矩,加速度,角 <BR>速度及角 <BR>加速度)。 <BR>下面是一个ADAMS生成的载荷文件,其中节点13001,13000为柔性体的外部节点, <BR>即为柔性 <BR>体 <BR>与刚体的连结点 <BR><BR>! <BR>! ******** A N S Y S ******** <BR>! ****** LOADS DATA SET FRAGMENT ****** <BR>! Load File Created From ADAMS Analysis <BR>! Load File Created From ADAMS Analysis <BR>! TO BE MERGED WITH ANSYS INPUT FILE! <BR>! Created: 26 Sep 2000 17:19 <BR>! Number of Load Cases: 101 <BR>! Units: Mass = Kilogram <BR>! Length = Meter <BR>! Angle = Degree <BR>! Force = Newton <BR>! Time = Second <BR>! ************************************* <BR>! <BR>! <BR>! LOAD CASE = 1 <BR>! <BR>TIME, 0.00000e+000 <BR>FDEL, ALL <BR>ACEL,-3.78853e+003,-4.30762e+003, 2.13066e-001 <BR>OMEGA, 7.46535e-003, 6.69963e-002,-4.25370e+003 <BR>DOMEGA,-2.66645e+003,-3.96341e+002,-4.58797e+006 <BR>LSWRITE <BR>F, 13001, FX, 2.55753e+002 <BR>F, 13001, FY,-5.22741e+002 <BR>F, 13001, FZ,-2.73710e-001 <BR>F, 13001, FZ,-2.73710e-001 <BR>F, 13001, MX, 2.96525e-003 <BR>F, 13001, MY,-1.12061e-002 <BR>F, 13001, MZ, 1.35740e-014 <BR>F, 13000, FX,-1.24434e+002 <BR>F, 13000, FY,-1.32538e+002 <BR>F, 13000, FZ,-1.17367e-001 <BR>F, 13000, MX,-2.90160e-002 <BR>F, 13000, MY, 2.44255e-002 <BR>F, 13000, MZ,-2.99116e-018 <BR>! <BR>! LOAD CASE = 2 <BR>! <BR>TIME, 2.00000e-004 <BR>FDEL, ALL <BR>ACEL, 2.05750e+002,-2.25877e+003,-1.22499e-002 <BR>OMEGA, 5.64714e-004,-2.05841e-003,-4.30216e+003 <BR>DOMEGA,-1.57225e+000,-7.26424e+001, 9.98159e+004 <BR>LSWRITE <BR>F, 13001, FX, 3.55247e-001 <BR>F, 13001, FY,-4.43764e+003 <BR>F, 13001, FZ,-3.66397e-002 <BR>F, 13001, MX, 1.05492e-004 <BR>F, 13001, MX, 1.05492e-004 <BR>F, 13001, MY,-8.23146e-005 <BR>F, 13001, MZ, 5.27314e-007 <BR>F, 13000, FX, 1.46268e+001 <BR>F, 13000, FY, 4.06027e+003 <BR>F, 13000, FZ, 3.44604e-002 <BR>F, 13000, MX,-1.02612e-002 <BR>F, 13000, MY,-7.88922e-004 <BR>F, 13000, MZ, 2.02945e-010 <BR>! <BR>! LOAD CASE = 3 <BR>! <BR>TIME, 4.00000e-004 <BR>FDEL, ALL <BR>ACEL, 4.02042e+002,-2.29575e+003, 5.15857e-004 <BR>OMEGA,-1.60213e-005,-2.24496e-005,-4.27698e+003 <BR>DOMEGA,-1.95136e-001, 8.10595e+000, 1.47297e+005 <BR>LSWRITE <BR>F, 13001, FX, 5.39541e+000 <BR>F, 13001, FY,-4.29034e+003 <BR>F, 13001, FZ,-2.73157e-002 <BR>F, 13001, MX, 8.24886e-005 <BR>F, 13001, MY,-1.01231e-004 <BR>F, 13001, MY,-1.01231e-004 <BR>F, 13001, MZ, 4.26752e-007 <BR>F, 13000, FX, 3.14285e+001 <BR>F, 13000, FY, 3.90741e+003 <BR>F, 13000, FZ, 2.73672e-002 <BR>F, 13000, MX,-1.02558e-002 <BR>F, 13000, MY,-1.64940e-003 <BR>F, 13000, MZ, 1.73532e-010 <BR>! <BR>! LOAD CASE = 4 <BR>! <BR>TIME, 6.00000e-004 <BR>FDEL, ALL <BR>ACEL, 1.35650e+003,-4.42093e+003,-1.38789e-002 <BR>OMEGA, 6.84467e-004,-1.23780e-003,-4.22870e+003 <BR>DOMEGA, 2.06642e+001,-4.14856e+001, 5.32235e+005 <BR>LSWRITE <BR>F, 13001, FX, 1.50068e+001 <BR>F, 13001, FY,-3.84148e+003 <BR>F, 13001, FZ,-3.49372e-002 <BR>F, 13001, MX,-8.00959e-004 <BR>F, 13001, MY,-1.43919e-004 <BR>F, 13001, MZ, 3.74950e-007 <BR>F, 13001, MZ, 3.74950e-007 <BR>F, 13000, FX, 1.04005e+002 <BR>F, 13000, FY, 3.15002e+003 <BR>F, 13000, FZ, 3.60263e-002 <BR>F, 13000, MX,-2.13251e-002 <BR>F, 13000, MY,-6.06040e-003 <BR>F, 13000, MZ, 3.61989e-010 <BR>! <BR>! LOAD CASE = 5 <BR>! <BR>TIME, 8.00000e-004 <BR>FDEL, ALL <BR>ACEL, 9.85164e+002,-2.75867e+003, 9.61651e-004 <BR>OMEGA,-2.58033e-006,-2.38005e-005,-4.17768e+003 <BR>DOMEGA,-1.72170e+000, 2.08520e+000, 3.43755e+005 <BR>LSWRITE <BR>F, 13001, FX, 1.49513e+001 <BR>F, 13001, FY,-4.14597e+003 <BR>F, 13001, FZ,-2.62448e-002 <BR>F, 13001, MX,-8.39990e-005 <BR>F, 13001, MY,-1.46065e-004 <BR>F, 13001, MZ, 4.21131e-007 <BR>F, 13000, FX, 7.80755e+001 <BR>F, 13000, FX, 7.80755e+001 <BR>F, 13000, FY, 3.69753e+003 <BR>F, 13000, FZ, 2.61245e-002 <BR>F, 13000, MX,-1.25697e-002 <BR>F, 13000, MY,-4.32105e-003 <BR>F, 13000, MZ, 2.25378e-010 <BR> |
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