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Thc hnh phn tch ng sut trong Solidworks 201017.12.2011 BY THNG MI LEAVE A COMMENT

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Nhn thy c nhiu bn ang gp kh khn vi vic phn tch ng sut, o khi lng v xut report trong khi thi CADD (c th l mn SolidWorks) nn mnh mn php xin c lm 1 bi hng dn cc bn cch lm. Anh em ai c thc mc g c t nhin hi nh. u tin chng ta c 1 chi tit nh hnh v.(mnh v chi tit n gin tit kim thi gian)

Sau cc bn chn Evalute/SimulationXpress:

Mn hnh tr thnh th ny y:

Sau cc bn lm nh hnh:

Next v chn Add a Fixture:

Chn 1 mt c nh(ngm):

Tip tc chn OK Next/Add a Force Chn mt chu tc dng lc:

V li OK v Next Choose Material gn vt liu cc bn)

Sau khi gn vt liu xong cc bn chn Apply v Close Sau chn Next v Run Simulation:

Tip tc chn Yes, continuous:

V Done viewing results Generate HTML report no

Sau khi hon tt ta c report y:

n y l xong bc phn tch ng sut. Nhng trong thi CADD cn mt yu cu na l o khi lng.(Ci ny rt nhiu bn b mt im v ngh trong HTML report c khi lng). Sau y mnh xin hng dn cc bn o khi lng chi tit. Sau khi tnh ton phn tch xong, ta thot khi mi trng Simulation Xpress. Click vo biu tng Mass Properties (hnh ci cn)

Click Option:

Lm nh hnh :

Cc bn ch in khi lng ring ca vt liu chnh xc nh. Sau Click ReCalculate Sau khi tnh ton xong chng ta Click Print nh hnh:

V d chn lu file report di dng XPS Document. Click OK. Chn forder lu file report v t tn cho file report.( y mnh t tn l report)

Sau Click Save. V chng ta vo forder lu file report. M file report no

Vy l hon thnh yu cu o khi lng. Nh vy mnh hng dn cc bn thc hin mt s yu cu trong thi CADD. Chc cc bn thnh cng!!!! Trong mi trng SolidWorks Simulation 1. Copy and Paste: Rt nhiu iu kin bin nh ti trng v rng buc c th copy v paste, do n khng ch ng vi mt study m cn c th p dng vi nhiu study. Chut phi vo mt i tng bn mun copy li thuc tnh, nhn Copy, chn th mc ch, chut phi ln na, chn Paste.

2. S dng SolidWorks Design Library: Khi mt iu kin bin c th c s dng trong ccFuture model, hy s dng th vin thit k trong Solidworks. n gin bn ch cn ko v th cc i tng t mt study ti ca s ang lm vic, theo ng sub-folder

3. Nhn bn Study: Tt nhin, i khi bn ch cn nhn bn mt study v sa i mt cht v li phn tch hoc mt iu kin bin ph hp vi study mi l c. nhn bn mt study, bn nhn vo tn ca study cn nhn bn trong ca s Solidworks v nhn chn Duplicate

Trong mi trng Motion: Cc key frames (c th hin bng cc hnh con r vi mu sc khc nhau) c th c copy v paste trong mt Motion study bng cch s dng phm tt Ctrl + C (Copy) v Ctrl + V (Paste). Hin ti, cc yu t chuyn ng nh l xo, ng c vn cha th sao chp c vo clipboard ca Windows, trong trng hp ny, hy s dng cc yu t trong Design Library caSolidworks Trong mi trng Flow Simulation 1. Copy boundary conditions: Ging nh trong Simulation, trong Flow Simulation ngi s dng c th s dng cch right click vo mt iu kin bin, mt goal, plot hay mt i tng khc v chn copy v paste trong project hin ti (hoc gia cc project khc nhau) trong m hnh CAD

2. Nhn bn hon ton mt project: Ton b d n c th c nhn bn trong m hnh CAD ca d n, chut phi vo pha trn ca cy th mc v chn cloning. Tt c cc iu kin bin, iu kin ban u, v kt qu s c sao chp nguyn vn. Chnh sa cc iu kin theo project mi bn s tit kim c rt nhiu thi gian.

3. S dng Project Templates: Cng vi vic nhn bn cc project, bn c th save mt project m bn va hon thnh lm mt mu s dng cho cc nghin cu sau ny. iu ny s gip cho nhng ngi dng trong mt t chc gi c cu trc, th t ca cc nghin cu. I hope youve found these simple tips useful and time-saving. If you have other ideas that youd like to see us blog about, please dont hesitate to contact us.

You Are Here: Home / Phn Mm Thit K / Solidworks / Solidworks Simulation Bi 3: Nghin Cu Tnh Ca Mt Part

Solidworks Simulation Bi 3: Nghin cu tnh ca mt Part01.09.2011 BY THNG MI LEAVE A COMMENT

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Chi tit cn nghin cu trong bi tp ny l Gi , lm t Alloy Steel (thp hp kim), c kha cht hai l v chu mt ti p sut l 1000 psi nh hnh v:

nh gc trn www.meslab.org/photo Trong bi tp ny, chng ta s hiu c nhng vn sau y: _Gn vt liu n mt part _To mt nghin cu phn tch tnh hc _p t mt rng buc c nh v mt ti p sut _Chy nghin cu _Xem cc kt qu c bn ca phn tch tnh hc _nh gi mc an ton ca thit k _To mt bo co nghin cu Trc tin, bn m part ln, sau gn vt liu cho part t th vin vt liu ca SolidWorks. m part, bn truy theo ng dn sau y: C:\Program Files\SolidWorks Corp\SolidWorks\Simulation\Examples\Tutor1.SLDPRT C:\Program Files\ c th thay bng mt v tr khc, ty theo ni bn ci t phn mm SolidWorks. Sau khi m part ln, nhn xung pha di, bn s thy mt Static study c to sn c tn l Ready. y, tin theo di v sau, cc bn cn lu cc quy c sau y: Cc file bi tp s bao gm mt hoc nhiu cc nghin cu cho trc c tn: +Partial: Nghin cu ny c sn nhng tnh nng m bn hc cc bi tp trc. Dng nhng nghin cu Partial khi lm theo hng dn hc nhng tnh nng mi v hon thnh bi tp. +Ready: Nghin cu ny c chun b y bn c th lp tc chy phn tch v xem kt qu. +Complete: Nghin cu ny c yu cu cho cc nghin cu khc tip theo. Bn khng cn phi chy nghin cu Complete xem kt qu ca mt nghin cu Partial hay Ready. I. Gn vt liu cho chi tit gn vt liu Alloy Steel t th vin vt liu ca SolidWorks, bn lm nh sau: 1. Click chut vo (nm trn thanh SolidWorks Standard) Hp thoi Material xut hin 2. Trong ca s bn tri, click vo du + cnh SolidWorks Materials, sau , click tip du + cnh Steel v chn Alloy Steel. Cc thuc tnh c kh ca Alloy Steel xut hin trong th Properties

3. Click Apply v Close Tn ca vt liu c gn xut hin trong cy th mc FeatureManager II. To mt nghin cu tnh hc Ta lm nh sau: 1. Click vo mi tn trn Study Advisor (Simulation CommandManager) v chn New Study. 2. Trong PropertyManager, di Name g Static-1 3. Di Type, click Static 4. Click Phn mm to mt nghin cu trong cy th mc Simulation study. Lu l du kim trn Part trong cy study cho bit rng bn gn vt liu.

y c mt s khc bit nh so vi CosmosWorks 2006. Trong khi vi CW 2006, bn phi chn kiu li th cng mi khi thc hin mt nghin cu mi, th vi SolidWorks Simulation 2011, vic chn kiu li ny c phn mm t ng tnh ton, ty vo tnh cht hnh hc ca m hnh cn phn tch. III. p t cc rng but Trong mt nghin cu tnh hc, bn phi rng but y n nh m hnh. Trong v d ny, bn s c nh hai l trn nn ca Part. c nh hai l, bn lm nh sau: 1. Click vo mi tn trn Fixtures Advisor (Simulation CommandManager) v chn

FixedGeometry, hoc click chut phi vo Fixtures trong cy study vo chn Fixed Geometry. Ca s qun l thuc tnh Fixture xut hin. 2. Trong vng ha, click chn cc mt tr ca hai l nh hnh minh ha Face v Face xut hin trong hp Faces, Edges, Vertices for Fixture i mu ca cc biu tng rng but, bn click Edit Color di Symbol setting. Mt bng mu xut hin. Chn mu bn mun ri click OK. 3. Click

Phn mm s c nh cc mt thuc hai l ny, v to mt icon c t tn l Fixed-1 trong folderFixtures ca cy th mc Simulation study. IV. p t cc ngoi lc By gi, bn phi t mt p sut 1000 psi vung gc vi mt phng hnh trn ca gi . t mt p sut, bn lm nh sau: 1. Click vo mi tn trn External Loads Ngoi lc (Simulation CommandManager) v

chnPressure p sut . 2. Trong PopertyManager, chn th Type, di mc Type, click Normal to selected face Vung gc vi mt c chn. 3. Trong vng ha, chn mt nh hnh minh ha cho Face for Pressure

nh gc trn www.meslab.org/photo 4. Di Pressure Value, chn psi trong Unit , sau , g 1000 cho Pressure Value Nu bn thay i n v sau khi g gi tr, phn mm s chuyn i gi tr n n v mi. 5. Click Phn mm s p t mt p sut 1000 psi v to mt icon c t tn l Pressure-1 trong

folder External Loads ca cy th mc Simulation study. y, c mt s khc bit nh v b cc cc folder. Trong khi CW 2006, cc ti v rng but c a chung vo mt folder Load/Restrain th SS 2011 n c tch thnh hai folder ring lFixtures v External Loads. V. Thit lp cc ty chn chia li Vic chia li ph thuc vo thit lp cc ty chn chia li. thit lp cc ty chn ny, bn lm nh sau: 1. Trong cy th mc Simulation study, click chut phi vo Mesh v chn Create Mesh . ,

hoc click vo mi tn trn Run (Simulation CommandManager) v chn Create Mesh 2. Trong PropertyManager, p t cc thit lp sau: Di Mesh Parameters: +Standar Mesh: chn +Global size: tnh ton t ng

+Tolerance: tnh ton t ng +Atutomatic transition: trng Di Advanced: +Jacobian points: t gi tr l 4 points +Draft Quality Mesh: trng +Automatic trials for solid: chn *Number of trials: 3 Hu ht cc bi tp u s dng cch thit lp nh trn trong ty chn chia li. Do , n gin, sau ny, khi ti ni chn thit lp li theo mc nh, th cc bn phi hiu rng ti ang ni v cc thit lp nh trn. Bi tp no yu cu nhng thit lp khc, s c cc hng dn ring cho mi bi tp . VI. Chia li cho Part v chy phn tch Phn mm s dng cc thit lp li trn chia li chia li cho Part v chy phn tch tnh hc, ta lm nh sau: 1. Click chp nhn cc gi tr Qu trnh to li bt u, v ca s Mesh Progress (tin to li) xut hin. Sau khi qu trnh to li hon thnh, m hnh c to li s xut hin trong vng ho.

2. Click Run

(Simulation CommandManager) xut hin trong cy th mc

Qu trnh phn tch c tin hnh, v folder Results (kt qu) Simulation study. VII. Hin th thng tin li hin th thng tin li, ta lm nh sau: 1. Trong cy th mc Simulation, click chut phi vo Mesh 2. ng hp danh sch Mesh Details. n hoc hin li, ta lm nh sau: Click Show/Hide Mesh trn Simulation toolbar.

v chn Details (chi tit).

Nu trn Simulation toolbar khng c sn cng c ny, bn c th thm vo. Hoc click chut phi vo Mesh v chn Hide Mesh hoc Show Mesh (tu vo m hnh trn vng ho c ang ch hin th li hay khng). VIII. Xem kt qu ng sut von Mises ng sut tng ng xem biu ng sut von Mises, bn lm nh sau: 1. Trong cy th mc Simualtion, m folder Results . 2. Click p chut vo Stress (-von Mises-) hin th biu .

nh gc trn www.meslab.org/photo Biu ng sut c biu din cng vi m hnh thay i hnh dng (deformation). minh ho cho s thay i hnh dng ca m hnh, phn mm tng t l thay i hnh dng ln nht ln n 10% ng cho ca hp ch nht bao quanh m hnh. Trong trng hp ny, t l thay i hnh dng xp x l 12. Cc bn lu , trong ti liu gc, c 2 t ting anh rt thng dng l Deformation v Strain u c dch ra l ting Vit l bin dng (trong ti liu ca thy Lng, thy dch Strain l sc cng. Tuy nhin, ph hp vi cc gio trnh ph bin trong nc v sc bn, phn t hu hn, mnh xin dch li l bin dng cc bn d theo di). Tuy nhin, ngha ca 2 t ny l khc nhau. Deformation l ch v s thay i hnh dng ni chung ca m hnh khi chu tc dng ca ngoi lc. Trong khi , Strain l bin dng ca m hnh hiu theo ngha khoa hc, ngha l s dch chuyn tng i v di v gc ca 1 im so vi cc im ln cn. Nh vy, v sau mnh s thng nht dng Thay i hnh dng cho Deformation v Bin dng cho Strain. xem biu ng sut trong mt h n v khc, click chut phi vo plot icon trn cy th mc Simulation v click Edit Definition. Di Display,

t Unitn h n v mong mun v click . IX. Xem kt qu chuyn v xem biu chuyn v, bn lm nh sau: 1. Trong cy th mc Simualtion, m folder Results . 2. Click p chut vo Displacement (-Res dips-) hin th biu .

nh gc trn www.meslab.org/photo

m phng hot ng ca qu trnh chuyn v, bn lm nh sau: 1. Click Plot Tools (Simulation CommandManager) v chn Animate Theo mc nh, qu trnh m phng s din ra qua li lin tc. N din ra t thi im bt u n thi im kt thc, sau , t kt thc n bt u, v tip tc lp li nh vy. 2. Click dng qu trnh m phng.

3. Click Loop , sau click bt u m phng. Qu trnh m phng s din ra trong mt vng lp lin tc. N din ra t thi im bt u n thi im kt thc, sau , li t thi im bt u n thi im kt thc, v tip tc lp li nh vy. 4. Click dng qu trnh m phng.

5. Click X. Xem kt qu phn t bin dng tng ng xem biu phn t bin dng tng ng, bn lm nh sau: 1. Trong cy th mc Simualtion, m folder Results . 3. Click p chut vo Strain (-Equivalent-) hin th biu .

nh gc trn www.meslab.org/photo XI. nh gi an ton ca thit k The Factor of Safety wizard (trnh thut s tnh ton h s an ton) gip nh gi mc an ton trong thit k ca bn. xem xt s phn b h s an ton (FOS) trong m hnh, bn lm nh sau: 1. Trong cy th mc Simulation, click chut phi vo folder Results v chn Define Factor of Safety Plot Biu xc nh h s an ton. The Factor of Safety PropertyManager xut hin. 2. Trong PropertyManager, di Step 1 of 3, chn Max von Mises Stress trong Criterion tiu chun 3. Click Next . 4. Di Step 2 of 3, chn Yield Strength. Lu l thuc tnh n hi ca vt liu v ng sut von Mises ln nht ca Part c lit k.

5. Click Next . 6. Di Step 3 of 3, chn Factor of safety distribution. 7. Click .

nh gc trn www.meslab.org/photo xem biu cc vng nguy him trong Part, ta lm nh sau: 1. Click vo mi tn trn Results Advisor (T vn kt qu) chn New Plot, Factor of Safety . (Simulation CommandManager) v

2. Trong PropertyManager, di Step 1 of 3, chn Max von Mises Stress trong Criterion 3. Click Next . 4. Di Step 2 of 3, chn Yield Strength. 5. Click Next . 6. Di Step 3 of 3: a. Chn Areas below factor of safety. (vng c h s an ton thp hn h s an ton c quy nh trong bc b.) b. Type 1 cho Factor of safety. 7. Click . Cc khu vc c h s an ton nh hn 1(cc khu vc khng an ton) c biu din bng mu . Cc khu vc c h s an ton ln hn, c biu din bng mu xanh dng.

nh gc trn www.meslab.org/photo

xem xt cc vng nguy him r rng hn, c l bn cn n i cc biu tng rng but v p sut. Click chut phi vo folder Fixtures v External Loads sau chn Hide all. Click p chut vo Factor of Safety di Results hin th li biu . XII. To mt bo co nghin cu: Tin ch Report xut mt bo co phn tch trong Microsoft Word to iu kin thun li cho vic nh gi ca cc ng nghip v ngi kim tra. to mt bo co nghin cu, bn lm nh sau: 1. Click Report (Simulation CommandManager). 2. Trong hp thoi, di Report sections: a. B chn nhng phn khng bao gm trong nghin cu ny: Connector Definitions, Contact Information, Sensor Details, Beams. b. Bn c th thm cc ch thch cho mi phn bo co. Chn mt phn bo co, sau , cp nht thng tin di Section Properties. 3. Nhp Header Information (thng tin tiu ) thng tin ny xut hin ti u bi v u mi trang bo co. 4. Di Report publish options (Cc ty chn xut bo co): a. G First Report cho Document Name b. Chn Show report on publish 5. Click Publish. Bo co s hin th trong mt ca s Microsoft Word. Bn c th duyt qua cc phn trong bi bo co bng cch nhn vo cc lin kt u trang. 6. ng ca s bo co, click . thay i nh dng file mc nh ca bi bo co, click Simulation, Options. Trong th Default Options, click Report. Chn nh dng mong mun, thit lp cc ty chn, v click OK. lu li m hnh v cc thng tin phn tch: Click File, save.