MECHANICA计算悬臂梁受力后产生的挠度教程

1、MECHANICA计算悬臂梁受力后产生的挠度教程|zlxlbean|版主首先声明，本人初学分析。用个简单例子来看一下MECHANICA在计算挠度时与手工算法有多大的差别。计算一悬臂梁受力后自由端的挠度水平悬臂梁长度1000mm，截面10mmx10mm,一端固定，自由端受向上的20N，计算端部挠度(模型省略)手工计算杨氏模量 与PROE 中FE40 一致，取126174N/mm2截面极惯性矩I： d*d人3/12=833.33mm人4端部挠度公式：Y=PL人3/(3EI)=20*10人9/3/126174/830=63.40mmMECHANICA 计算应用程序 MECHANICA设定约束MODE

2、LCONSTRAINTNEWSURFACE选择梁的一端。如图端部已限制六个自由度积极参与+ 5by鱼小虾设定载荷MODELMATERIALS在材料库中选择FE40, ,选择右侧模型材料清单中的FE40, EDIT查看 材料特性：可以看见FE40的泊松比已预设为0.25,杨氏模量已预设为126174N/mm2,ASSIGN MODEL，选择模型，将材料赋于模型，ANALYSES/STUDIESSTART RUNSTUDY STATUS中的计算结果MAX_DISP_Y即为Y方向挠度62.9880.000000e+000.000000e+000.000000e+000.000000e+006.301

3、795e+013.586717e-036.298895e+01-2.855637e+00-1.367307e+020.000000e+000.000000e+000.000000e+000.000000e+001.336835e+021.208697e+02-4.803162e+018.678658e+00-1.299264e+01Measures: max_beam_bending: max_beam_tensile: max_beam_torsion: max_beam_total: max_disp_mag: max_disp_x: max_disp_y: max_disp_z: max

4、_prin_mag: max_rot_mag: max_rot_x: max_rot_y: max_rot_z: max_stress_prin: max_stress_vm: max_stress_xx: max_stress_xy: maxstressxz:max_stress_yy: -4.804984e+01max_stress_yz: -8.408328e+00max_stress_zz: -1.366642e+02min_stress_prin: -1.367307e+02strain_energy:6.279311e+02最后还可图形表示挠度RESULTQUANTITY 选 DI

5、SPLACEMENT、COMPONENT YDISPLAY OPTIONS 勾选 DEFORMED、TRANSPARENT OVERLAY结果基本一致PROE： 6.2989E+1mm公式计算：63.40mm本想在题目前加上“菜鸟”二字的没想到没加上去，惭愧的很:rose是用理想化的鱼小虾超级斑竹 这种小问题都被怀疑那这个mechanica就完蛋了！我算的肯定比你更快更准 BEAM算出来的。maxbeambending:10.0%maxbeamtensile:0.0%maxbeamtorsion:0.0%maxbeamtotal:10.0%maxdispmag:6.340923e+010.0%

6、maxdispx:0.0%max_disp_y:0.0%maxdispz:6.340923e+010.0%zlxlbean|版主：终于算出来了。（模拟悬臂梁SECTION 选用了不同的方法，可能这个比较好，建立BEAM.PRT, PNT0, PNT1相距1000mm, 的起始终止点）IDEALZATIONS如图设置，并将应用程序 MECHANICA STRUCTURE IDEALZATIONS BEAM择为 10mmx10mm设置约束，CONSTRAINTSPOINTNEW PNT0 FIXED设置载荷，LOADSPOINTNEW PNT1 20N y方向analyses/studies ne

7、w static 如图设置分析结果：Measures:max_beam_bending: 1.200000e+02max_beam_tensile: 0.000000e+00maxbeamtorsion: 0.000000e+00max_beam_total: max_disp_mag: max_disp_x: max_disp_y: max_disp_z: max_prin_mag: max_rot_mag: max_rot_x: max_rot_y: max_rot_z: max_stress_prin: max_stress_vm: max_stress_xx: max_stress_x

8、y: max_stress_xz: max_stress_yy: max_stress_yz: max_stress_zz: min_stress_prin: strain_energy:1.200000e+026.340926e+010.000000e+006.340926e+010.000000e+001.200000e+029.510676e-020.000000e+000.000000e+009.510676e-021.200000e+021.200000e+020.000000e+000.000000e+000.000000e+000.000000e+000.000000e+000.

9、000000e+00-1.200000e+026.340926e+02图形表示structureresultsinsertinsert result window quantity:displacement考虑重力也可以复合载荷LOADSET1 是 20NLOADSET2是重力结果：Load Set: LoadSetlmax_disp_mag:6.340926e+01Load Set: LoadSet2max_disp_mag:8.387563e+00max_disp_y:-8.387563e+00问：Measures:NameValue Convergencemax_beam_bending

10、: 1.200000e+020.0%max_beam_tensile:0.000000e+000.0%max_beam_torsion:0.000000e+000.0%max_beam_total:1.200000e+020.0%max_disp_mag:6.340926e-020.0%max_disp_x:0.000000e+000.0%max_disp_y:6.340926e-020.0%max_disp_z:0.000000e+000.0%max_prin_mag:1.200000e+020.0%max_rot_mag:9.510676e-050.0%max_rot_x:0.000000

11、e+000.0%max_rot_y:0.000000e+000.0%max_rot_z:9.510676e-050.0%max_stress_prin:1.200000e+020.0%max_stress_vm:1.200000e+020.0%max_stress_xx:0.000000e+000.0%max_stress_xy:0.000000e+000.0%max_stress_xz:0.000000e+000.0%max_stress_yy:0.000000e+000.0%max_stress_yz:0.000000e+000.0%max_stress_zz:0.000000e+000.0%min_stress_prin:-1.200000e+020.0%strain_energy:6.340926e-010.0%Analysis Analysisl Completed (21:48:38)我的分析结果，仅为1/1000,是单位有误吗?Principal System of Units: CustomLength:mmMass:kgTime:secTemperature