《扭力梁后悬架Adams模型预载调节.docx》由会员分享,可在线阅读,更多相关《扭力梁后悬架Adams模型预载调节.docx(7页珍藏版)》请在三一文库上搜索。
1、根据帮助整理的:方法一:制作mnf 文件时添加step1:用按 ansys 制作自由摸态的mnf 文件( old.mnf)step2:用记事本制作预载荷文件(load.txt)格式如下:%PC节点添加预载(初始值)1000FX 1e51000 号节点 X 向加 100000N1001FY -1e5%C节点添加载荷(恒定值)1000FX 1e51000 号节点 X 向加 100000N1001FY -1e5%PM模态添加预载101e51000号模态加 100000N%M模态添加载荷101e51000号模态加 100000Nstep3:用命令行执行命令生成含有预载荷的mnf 文件 (new.mnf
2、)格式如下:%mdi -c flextk mnfload old.mnf new.mnfload.txtstep4:用 ADAMS定义 modal force, 选用 funtion方法二:编写用户子程序添加step1:用 fortran或 C+写 MFOSUB函数,生成ADAMS/solver 的 dll(详情参考论坛相关帖子)step2:用 ADAMS定义 modal force,选用 subroutine,并输入函数参数和dll的路径(期待高手完善)补充例子如下:一根梁两端固定,中间某排节点添加向下的集中力方法一:制作mnf 文件时添加step1:用按 ansys 制作自由摸态的mnf
3、文件( old.mnf)命令流如下:/PREP7ET,1,SOLID95ET,2,MASS211R,1,1e-6,1e-6,1e-6,1e-6,1e-6,1e-6,MPTEMP,MPTEMP,1,0MPDATA,EX,1,2e11MPDATA,PRXY,1,.3MPTEMP,MPTEMP,1,0MPDATA,DENS,1,7800BLOCK,0,0.01,0,0.001,0,0.002,K,10001,0,0.0005,0.001K,10002,0.01,0.0005,0.001TYPE,1VSWEEP,1TYPE,2KMESH,10001KMESH,10002ASEL,S,5NSLA,S,1
4、NSEL,A,818nplotCERIG,818,ALL,UXYZ,allsel,allASEL,S,6NSLA,S,1NSEL,A,819nplotCERIG,819,ALL,UXYZ,2allsel,allstep2:用记事本制作预载荷文件(load.txt)文件内容如下:%C389 FY -100132 FY -100133 FY -100134 FY -100464 FY -100(注意上面的东西不能多也不能少,连回车和空格也不例外,否则导致生成失败)step3:用命令行执行命令生成含有预载荷的mnf 文件 (new.mnf)运行 cmd.exe执行以下命令:adams05 flext
5、k mnfload old.mnf mew.mnf load.txt执行完毕信息:E:testexample_modal_forceadams05 flextk mnfload old.mnf new.mnf load.txtBegin execution of MSC Flex Toolkit (mnfload).Title:Name : ct_tempType : ANSYS 11.0Comment 1:3Comment 2:Comment 3:Exporting frequency range -1.000000e+000,1.000000e+008Creating a Modal Ne
6、utral File with the following information:Nodal Coords YesElement Faces YesEigenvalues YesMode Shapes YesGlobal Mass Properties YesNodal Masses YesNodal Inertias YesGeneralized Stiffness NoGeneralized Mass NoGeneralized Damping NoMode Transformation YesStress Modes YesInterface Nodes YesInertia Inva
7、riants NoModal Preload NoModal Loads YesStrain Modes YesNode info:Count: 819Global body properties:Mass: 0.000158Center of Mass: 0.005000 0.000506 0.000987Inertia Tensor: 0.000002 0.000000 0.0000000.000000 0.000002 0.0000000.000000 0.000000 0.000002Eigenvalue info:Modes: 18Trans Mode info:Modes: 18Nodes: 819Writing Mode ShapesNodal inertia info:4Sparse matrix entries: 6Units:Mass:KILOGRAMLength: METERTime:SECONDForce:NEWTONNumber of Element Faces: 720Stress Mode info:Modes: 18Nodes: 240Strain Mode info:Modes: 18Nodes: 240step4:用 ADAMS定义 modal force,选用 funtion5分析结果6