MECHANICA計(jì)算懸臂梁受力后產(chǎn)生的撓度教程

1、MECHANICA計(jì)算懸臂梁受力后產(chǎn)生的撓度教程|zlxlbean|版主首先聲明，本人初學(xué)分析。用個(gè)簡(jiǎn)單例子來(lái)看一下MECHANICA在計(jì)算撓度時(shí)與手工算法有多大的差別。計(jì)算一懸臂梁受力后自由端的撓度水平懸臂梁長(zhǎng)度1000mm，截面10mmx10mm,一端固定，自由端受向上的20N，計(jì)算端部撓度(模型省略)手工計(jì)算楊氏模量 與PROE 中FE40 一致，取126174N/mm2截面極慣性矩I： d*d人3/12=833.33mm人4端部撓度公式：Y=PL人3/(3EI)=20*10人9/3/126174/830=63.40mmMECHANICA 計(jì)算應(yīng)用程序 MECHANICA設(shè)定約束MODE

2、LCONSTRAINTNEWSURFACE選擇梁的一端。如圖端部已限制六個(gè)自由度積極參與+ 5by魚(yú)小蝦設(shè)定載荷MODELMATERIALS在材料庫(kù)中選擇FE40, ,選擇右側(cè)模型材料清單中的FE40, EDIT查看 材料特性：可以看見(jiàn)FE40的泊松比已預(yù)設(shè)為0.25,楊氏模量已預(yù)設(shè)為126174N/mm2,ASSIGN MODEL，選擇模型，將材料賦于模型，ANALYSES/STUDIESSTART RUNSTUDY STATUS中的計(jì)算結(jié)果MAX_DISP_Y即為Y方向撓度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最后還可圖形表示撓度RESULTQUANTITY 選 DI

5、SPLACEMENT、COMPONENT YDISPLAY OPTIONS 勾選 DEFORMED、TRANSPARENT OVERLAY結(jié)果基本一致PROE： 6.2989E+1mm公式計(jì)算：63.40mm本想在題目前加上“菜鳥(niǎo)”二字的沒(méi)想到?jīng)]加上去，慚愧的很:rose是用理想化的魚(yú)小蝦超級(jí)斑竹 這種小問(wèn)題都被懷疑那這個(gè)mechanica就完蛋了！我算的肯定比你更快更準(zhǔn) BEAM算出來(lái)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：終于算出來(lái)了。（模擬懸臂梁SECTION 選用了不同的方法，可能這個(gè)比較好，建立BEAM.PRT, PNT0, PNT1相距1000mm, 的起始終止點(diǎn)）IDEALZATIONS如圖設(shè)置，并將應(yīng)用程序 MECHANICA STRUCTURE IDEALZATIONS BEAM擇為 10mmx10mm設(shè)置約束，CONSTRAINTSPOINTNEW PNT0 FIXED設(shè)置載荷，LOADSPOINTNEW PNT1 20N y方向analyses/studies ne

7、w static 如圖設(shè)置分析結(jié)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圖形表示structureresultsinsertinsert result window quantity:displacement考慮重力也可以復(fù)合載荷LOADSET1 是 20NLOADSET2是重力結(jié)果：Load Set: LoadSetlmax_disp_mag:6.340926e+01Load Set: LoadSet2max_disp_mag:8.387563e+00max_disp_y:-8.387563e+00問(wèn)：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)我的分析結(jié)果，僅為1/1000,是單位有誤嗎?Principal System of Units: CustomLength:mmMass:kgTime:secTemperature