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From: Jonas Forssell <jonasforssell@ya...>  20051030 18:54:42

Hello Jens, First  Use the left mouse button (drag) to select the elements / nodes using a box. Next, under the modify tab, you can change material, boundary condition, load etc. Just select and press set. Note that new BC:s and loads can be created with the three right icons in the main icon line. Thickness cannot be changed on an entire stl file at the moment. Export to a .in file when finished and then use the search  replace feature in the solver text editor (or a normal editor) If you want to change a single element or node, just double click on it  change value  and then press update. Lycka till. /Jonas  Jens Bomholt <jens.bomholt@...> skrev: > Hi all > > When I import an *.stl file I have 1237 nodes which > I want to give a load az > = 9.81. How can I change all thise node in one > operation? > > After that I want to change material and thickness > of all the elements in > one operation? > > thanks > JB > 
From: Jens Bomholt <jens.bomholt@gm...>  20051030 12:26:55

Hi all When I import an *.stl file I have 1237 nodes which I want to give a load a= z =3D 9.81. How can I change all thise node in one operation? After that I want to change material and thickness of all the elements in one operation? thanks JB 
From: Jonas Forssell <jonasforssell@ya...>  20051029 12:46:06

 "Jeremy R. Cummings, Ph.D." <jeremy@...> skrev: > Jonas, > Does the mesh tool in the preprocessor work? If > so, how does one > use it? Short question  long answer  Yes. The best is to try around yourself. Basically, the structure is as follows. 1. Create points 2. Using the points, create curves 3. Using the curves, create surfaces 4. set boundary conditions and loads onto the generated mesh. 5. export to a .in file When a curve is created, you have to input the wanted mesh size and material, diameter etc. Default is that no mesh is created on a curve but you can select rod elements or similar When a surface is created, the mesh of that surface is automatically generated based on the mesh on the curves in order to fit them. You only select material, element type and thickness in most cases. If you later find you want to modify something, just double click on that item and you can modify the input in a panel. Then click update. If you move a point, you can then update the whole model using the rebuild button (little yellow man). This means curves using this point will change. Sufaces using the curves will change and so on. Right mouse button rotates. Right mouse button while holding down CTRL zooms and SHIFT pans view. Left mouse button selects. You can also do box select. If you feel like writing a tutorial or manual for the preprocessor, feel free. :) /Jonas > > Jeremy > > > > > >CONTROLS > >run from 0.0 to 0.50 > >print every 0.002 step > > > >MATERIALS OF TYPE ElastoPlastic > >Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 > YIELD_STRESS = 0.180 EP = 0.1 > > > >MATERIALS OF TYPE ElastoPlastic > >Glass E = 65 NU = 0.230000 RHO = 0.0000026 > FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 > > > >CONSTRAINTS OF TYPE BOUNDARY_CONDITION > >FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 > AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 > > > >LOAD > >pulse az = 9.81 > > > >NODES > >1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED > >2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED > >3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED > >4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED > >11 X = 4.0 Y = 0.0 Z = 0.5 Constraint = pulse > >12 X = 6.0 Y = 0.0 Z = 0.5 Constraint = pulse > >13 X = 4.0 Y = 10.0 Z = 0.5 Constraint = pulse > >14 X = 6.0 Y = 10.0 Z = 0.5 Constraint = pulse > > > > > >ELEMENTS OF TYPE Shell_C0_3 > >1 nodes = [1,2,3] T = 0.2 Material = Glass NIP > = 5 > >2 nodes = [2,4,3] T = 0.2 Material = Glass NIP > = 5 > >3 nodes = [12,11,14] T = 0.2 Material = Steel_EP > NIP = 5 > >4 nodes = [11,14,13] T = 0.2 Material = Steel_EP > NIP = 5 > > > > > > > >080909030204080703010508 > > > > > > > >____ > > > >_______________________________________________ > >Impactusers mailing list > >Impactusers@... > >https://lists.sourceforge.net/lists/listinfo/impactusers > > > > > >End of Impactusers Digest > > > > > >  > Jeremy R. Cummings, Ph.D. > > Cummings Scientific, LLC > 2408 West Plaza Dr. > Tallahassee, FL 32308 > > 8502283335 (phone) > 8882499226 (fax) > > http://www.CummingsSci.com > > > >  > This SF.Net email is sponsored by the JBoss Inc. > Get Certified Today * Register for a JBoss Training > Course > Free Certification Exam for All Training Attendees > Through End of 2005 > Visit http://www.jboss.com/services/certification > for more information > _______________________________________________ > Impactusers mailing list > Impactusers@... > https://lists.sourceforge.net/lists/listinfo/impactusers > 
From: Jeremy R. Cummings, Ph.D. <jeremy@cu...>  20051023 01:07:54

Jonas, Does the mesh tool in the preprocessor work? If so, how does one use it? Jeremy >CONTROLS >run from 0.0 to 0.50 >print every 0.002 step > >MATERIALS OF TYPE ElastoPlastic >Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 YIELD_STRESS = 0.180 EP = 0.1 > >MATERIALS OF TYPE ElastoPlastic >Glass E = 65 NU = 0.230000 RHO = 0.0000026 FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 > >CONSTRAINTS OF TYPE BOUNDARY_CONDITION >FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 > >LOAD >pulse az = 9.81 > >NODES >1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED >2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED >3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED >4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED >11 X = 4.0 Y = 0.0 Z = 0.5 Constraint = pulse >12 X = 6.0 Y = 0.0 Z = 0.5 Constraint = pulse >13 X = 4.0 Y = 10.0 Z = 0.5 Constraint = pulse >14 X = 6.0 Y = 10.0 Z = 0.5 Constraint = pulse > > >ELEMENTS OF TYPE Shell_C0_3 >1 nodes = [1,2,3] T = 0.2 Material = Glass NIP = 5 >2 nodes = [2,4,3] T = 0.2 Material = Glass NIP = 5 >3 nodes = [12,11,14] T = 0.2 Material = Steel_EP NIP = 5 >4 nodes = [11,14,13] T = 0.2 Material = Steel_EP NIP = 5 > > > >080909030204080703010508 > > > >____ > >_______________________________________________ >Impactusers mailing list >Impactusers@... >https://lists.sourceforge.net/lists/listinfo/impactusers > > >End of Impactusers Digest > >  Jeremy R. Cummings, Ph.D. Cummings Scientific, LLC 2408 West Plaza Dr. Tallahassee, FL 32308 8502283335 (phone) 8882499226 (fax) http://www.CummingsSci.com 
From: Manuel Lohmann <Manuel.Lohmann@on...>  20051022 09:57:35

Hi! There is contact detection. I tried your example myself. Of course the corrected version. Believe me, it works. You have to write: "LOADS", not "LOAD" Manuel (al'be:do)  CONTROLS run from 0.0 to 0.50 print every 0.01 step MATERIALS OF TYPE ElastoPlastic Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 YIELD_STRESS = 0.180 EP = 0.1 MATERIALS OF TYPE ElastoPlastic Glass E = 65 NU = 0.230000 RHO = 0.0000026 FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 CONSTRAINTS OF TYPE BOUNDARY_CONDITION FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 ###### Here's the correct line! LOADS pulse az = 9.81 ###### NODES 1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED 2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED 3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED 4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED 11 X = 4.0 Y = 0.0 Z = 1.0 Load = pulse 12 X = 6.0 Y = 0.0 Z = 1.0 Load = pulse 13 X = 4.0 Y = 10.0 Z = 1.0 Load = pulse 14 X = 6.0 Y = 10.0 Z = 1.0 Load = pulse ELEMENTS OF TYPE Shell_C0_3 1 nodes = [1,2,3] T = 0.1 Factor = 10 Material = Glass NIP = 5 2 nodes = [2,4,3] T = 0.1 Factor = 10 Material = Glass NIP = 5 3 nodes = [12,11,14] T = 0.1 Factor = 10 Material = Steel_EP NIP = 5 4 nodes = [11,14,13] T = 0.1 Factor = 10 Material = Steel_EP NIP = 5 
From: Jeremy R. Cummings, Ph.D. <jeremy@cu...>  20051021 18:31:49

Even with those changes there is still no collision. Jeremy 
From: Manuel Lohmann <Manuel.Lohmann@on...>  20051020 09:14:46

Hi, Jeremy! The "pulse" variable is no constraint but a load!!! Here's the corrected version. When you watch the impact event then you see that the acceleration is way too high. You should change mybe the thickness or simply set the gravity to a lower value. Don't forget the unit conversions to be correct! Manuel (al'be:do)  CONTROLS run from 0.0 to 0.50 print every 0.01 step MATERIALS OF TYPE ElastoPlastic Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 YIELD_STRESS = 0.180 EP = 0.1 MATERIALS OF TYPE ElastoPlastic Glass E = 65 NU = 0.230000 RHO = 0.0000026 FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 CONSTRAINTS OF TYPE BOUNDARY_CONDITION FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 ###### Here's the correct line! LOADS pulse az = 9.81 ###### NODES 1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED 2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED 3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED 4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED 11 X = 4.0 Y = 0.0 Z = 1.0 Load = pulse 12 X = 6.0 Y = 0.0 Z = 1.0 Load = pulse 13 X = 4.0 Y = 10.0 Z = 1.0 Load = pulse 14 X = 6.0 Y = 10.0 Z = 1.0 Load = pulse ELEMENTS OF TYPE Shell_C0_3 1 nodes = [1,2,3] T = 0.1 Factor = 10 Material = Glass NIP = 5 2 nodes = [2,4,3] T = 0.1 Factor = 10 Material = Glass NIP = 5 3 nodes = [12,11,14] T = 0.1 Factor = 10 Material = Steel_EP NIP = 5 4 nodes = [11,14,13] T = 0.1 Factor = 10 Material = Steel_EP NIP = 5 
From: Jonas Forssell <jonasforssell@ya...>  20051020 05:01:19

Jeremy, Just a quick reply without digging deep; Try changing your pulse constraint into a load instead LOAD pulse az = 9.81 The constraint forces to nodes to keep the set acceleration no matter what during the duration of the condition. A load will just contribute to the overall load on an element. Contact forces are also loads (repelling loads). Try it and let me know. /Jonas  "Jeremy R. Cummings, Ph.D." <jeremy@...> skrev: > Why is there no contact between these shell > elements? > > CONTROLS > run from 0.0 to 0.50 > print every 0.01 step > > MATERIALS OF TYPE ElastoPlastic > Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 > YIELD_STRESS = 0.180 EP = 0.1 > > MATERIALS OF TYPE ElastoPlastic > Glass E = 65 NU = 0.230000 RHO = 0.0000026 > FAILURE_STRESS = 0.001 > YIELD_STRESS = 0.07 EP = 0.01 > > CONSTRAINTS OF TYPE BOUNDARY_CONDITION > FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 > AX = 0 AY = 0 AZ = 0 > ARX = 0 ARY = 0 ARZ = 0 > > CONSTRAINTS OF TYPE BOUNDARY_CONDITION > pulse az = 9.81 > > NODES > 1 X = 0.0 Y = 0.0 Z = 0.0 Constraint > = FIXED > 2 X = 10.0 Y = 0.0 Z = 0.0 > Constraint = FIXED > 3 X = 0.0 Y = 10.0 Z = 0.0 > Constraint = FIXED > 4 X = 10.0 Y = 10.0 Z = 0.0 > Constraint = FIXED > 11 X = 4.0 Y = 0.0 Z = 1.0 > Constraint = pulse > 12 X = 6.0 Y = 0.0 Z = 1.0 > Constraint = pulse > 13 X = 4.0 Y = 10.0 Z = 1.0 > Constraint = pulse > 14 X = 6.0 Y = 10.0 Z = 1.0 > Constraint = pulse > > > ELEMENTS OF TYPE Shell_C0_3 > 1 nodes = [1,2,3] T = 0.1 Material = > Glass NIP = 5 > 2 nodes = [2,4,3] T = 0.1 Material = > Glass NIP = 5 > 3 nodes = [12,11,14] T = 0.1 Material = > Steel_EP NIP = 5 > 4 nodes = [11,14,13] T = 0.1 Material = > Steel_EP NIP = 5 > >  > Jeremy R. Cummings, Ph.D. > > 2408 West Plaza Dr. Suite A > Tallahassee, FL 32308 > > 8502283335 (phone) > 8882499226 (fax) > > http://www.CummingsSci.com > > > # Created Impact Pre Processor (2005.03.17) > # Wed Oct 19 15:41:35 EDT 2005 > > CONTROLS > run from 0.0 to 0.50 > print every 0.01 step > > MATERIALS OF TYPE ElastoPlastic > Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 > YIELD_STRESS = 0.180 EP = 0.1 > > MATERIALS OF TYPE ElastoPlastic > Glass E = 65 NU = 0.230000 RHO = 0.0000026 > FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 > > CONSTRAINTS OF TYPE BOUNDARY_CONDITION > FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 > AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 > > CONSTRAINTS OF TYPE BOUNDARY_CONDITION > pulse az = 9.81 > > NODES > 1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED > 2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED > 3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED > 4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED > 11 X = 4.0 Y = 0.0 Z = 1.0 Constraint = pulse > 12 X = 6.0 Y = 0.0 Z = 1.0 Constraint = pulse > 13 X = 4.0 Y = 10.0 Z = 1.0 Constraint = pulse > 14 X = 6.0 Y = 10.0 Z = 1.0 Constraint = pulse > > > ELEMENTS OF TYPE Shell_C0_3 > 1 nodes = [1,2,3] T = 0.1 Material = Glass NIP > = 5 > 2 nodes = [2,4,3] T = 0.1 Material = Glass NIP > = 5 > 3 nodes = [12,11,14] T = 0.1 Material = Steel_EP > NIP = 5 > 4 nodes = [11,14,13] T = 0.1 Material = Steel_EP > NIP = 5 > > > 
From: Jeremy R. Cummings, Ph.D. <jeremy@cu...>  20051019 20:30:27

Why is there no contact between these shell elements? CONTROLS run from 0.0 to 0.50 print every 0.01 step MATERIALS OF TYPE ElastoPlastic Steel_EP E = 210 RHO = 0.0000078 NU = 0.3 YIELD_STRESS = 0.180 EP = 0.1 MATERIALS OF TYPE ElastoPlastic Glass E = 65 NU = 0.230000 RHO = 0.0000026 FAILURE_STRESS = 0.001 YIELD_STRESS = 0.07 EP = 0.01 CONSTRAINTS OF TYPE BOUNDARY_CONDITION FIXED VX = 0 VY = 0 VZ = 0 VRX = 0 VRY = 0 VRZ = 0 AX = 0 AY = 0 AZ = 0 ARX = 0 ARY = 0 ARZ = 0 CONSTRAINTS OF TYPE BOUNDARY_CONDITION pulse az = 9.81 NODES 1 X = 0.0 Y = 0.0 Z = 0.0 Constraint = FIXED 2 X = 10.0 Y = 0.0 Z = 0.0 Constraint = FIXED 3 X = 0.0 Y = 10.0 Z = 0.0 Constraint = FIXED 4 X = 10.0 Y = 10.0 Z = 0.0 Constraint = FIXED 11 X = 4.0 Y = 0.0 Z = 1.0 Constraint = pulse 12 X = 6.0 Y = 0.0 Z = 1.0 Constraint = pulse 13 X = 4.0 Y = 10.0 Z = 1.0 Constraint = pulse 14 X = 6.0 Y = 10.0 Z = 1.0 Constraint = pulse ELEMENTS OF TYPE Shell_C0_3 1 nodes = [1,2,3] T = 0.1 Material = Glass NIP = 5 2 nodes = [2,4,3] T = 0.1 Material = Glass NIP = 5 3 nodes = [12,11,14] T = 0.1 Material = Steel_EP NIP = 5 4 nodes = [11,14,13] T = 0.1 Material = Steel_EP NIP = 5  Jeremy R. Cummings, Ph.D. 2408 West Plaza Dr. Suite A Tallahassee, FL 32308 8502283335 (phone) 8882499226 (fax) http://www.CummingsSci.com 
From: Jeremy R. Cummings, Ph.D. <jeremy@cu...>  20051019 19:10:42

How does one move the model laterally and vertically in the preprocessor window now? I used to be able to do this with the middle mouse button. Jeremy 
From: pablo p del castillo <pablodecastillo@ya...>  20051007 15:41:29

Hello; I am trying to impact a ball against a cable net, but it is not detecting the contact, i need help, any idea?, what is wrong? Advanced thanks Pablo ______________________________________________ Renovamos el Correo Yahoo! Nuevos servicios, más seguridad http://correo.yahoo.es 
From: Jonas Forssell <jonasforssell@ya...>  20051006 04:54:25

Hello Dave, I changed the order of the nodes. The elements had a negative volume. See right order below. ELEMENTS OF TYPE Solid_Iso_6 1 nodes = [6,5,8,7,3,4,2,1] 2 nodes = [13,14,15,16,9,10,11,12] I also propose you change the header: CONTROLS run from 0.0 to 1.0 step 1e4 print every 0.1 step Note that solid elements does not have any contact sensitivity by default. You need to "dress" them with contact triangles to achieve this. /Jonas  "Hyman, Dave" <dhyman@...> skrev: > I created the attached .in file and the processor is > saying that my > elements have zero or negative mass. Any help would > be appreciated. > > Thanks > > Dave > 
From: Hyman, Dave <dhyman@ir...>  20051004 17:27:02

I created the attached .in file and the processor is saying that my elements have zero or negative mass. Any help would be appreciated. Thanks Dave 