Jump to content

Search the Community

Showing results for tags '1d'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Altair Support Forum
    • Welcome to Altair Support Forum
    • Installation and Licensing
    • Modeling & Visualisation
    • Solvers & Optimization
    • Multi Body Simulation
    • Conceptual design and Industrial design
    • Model-Based Development
    • Manufacturing Simulation
    • CAE Process Automation
  • Academic Partner Alliance Forum
    • APA - Composites
    • APA - CFD & Thermal
    • APA - Vehicle Dynamics
    • APA - Manufacturing
    • APA - Crash and Safety
    • APA - Noise, Vibration and Harshness
    • APA - System Level Design
    • APA - Structural and Fatigue
    • APA - Marine
    • APA - Optical Design
  • Japanユーザーフォーラム
    • ユーザーフォーラムへようこそ
    • Altair製品の意外な活用例
    • インストールとライセンス
    • モデリング(プリプロセッシング)
    • シミュレーション技術(ソルバー)
    • データ可視化(ポストプロセッシング)
    • モデルベース開発
    • コンセプト設計と工業デザイン
    • 製造シミュレーション
    • CAE プロセスの自動化
    • 学生向け無償版
    • エンタープライズソリューション

Categories

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Interests


Organization


Location

Found 28 results

  1. Hey, when connecting my Beam Section(created with Hyperbeam) to my 1d elements the shear center of my profil is aligned on the origin of my 1D Element. Is there any option to choose an other axis of the profil to align on the element origin? Thank you.
  2. Hello, i am trying to calculate von Mises stress for a beam. The beam has a weird cross section and i already defined the section in hyperbeam. for properties i use PBEAM, since there is no cross section that is the same in optisctruct library. i have gave the value for continuation line 2, 5 and 6. in Output, i have requested stress for all type. There is no problem during the calculation and in the result type(Hyperview), it only shows Displacement, Element strain(1D) and Element stress(1D). Under Stress, i can only choose axial and long. stress, but i need von Mises Stress. How can i obtain the von MIses stress? thanks in advance
  3. Hello Is it possible to model a 1D element that fails in either tension or shear? I would like analyze a breakaway feature on a structure that absorbs a portion of the impact energy and breaks off. Fracture can be either in tension (i.e cable) or in shear (i.e shear pin). Thank you
  4. Hello, I would like to know what kind of beam I should use for my simulation and I struggle to find the differences between the P18_INT_BEAM and the P3_beam. I saw that in bending, the bigger the deformation get, the bigger differences are between the two kinds of beam. Could somebody give me more informations about that ? Regards, Camille
  5. Hi, I have a model that contains many 1D beams. In hypermesh, it is possible to view 1d elements as "1D traditional and detailed element representation". Is it possible to do this in Hyperview? Kind Regards, Laurence
  6. Hı everyone, I want to do fatigue analysis. After Lattice Optimization, my model has 1d beams. How to convert from 1d element to shell element. Thank you
  7. Hi, I tried to connect a 1D Bar (comp id 1) element with a 2D Shell. But when I create a connector Spot weld I always get the error “failed: Link entity 1 (comp id 1) does not have a projection”. Is it not possible to connect a Bar element with a Shell element using connectors? Kind Regards, Simon
  8. Hi everyone, I have a question about 1d element with varying cross section. Is it possible to use such elements with optistruct? I have tried CBEAM as an element and property PBEAML, I ve tried everything and I cant figure it out. I ve tried using the PBEAML card option "pbeamlintstationslen" for dividing element into different cross sections but it doenst work. Can anyone guide me on this subject? Thank you very much for your time, Gonçalo
  9. Hi, I am using Hyperworks (V13) to analysis 1D beam and rod. I used 3 pairs of Rev joint for point 3 as I don't know if there is any better way to join 3 part together. I created 4 bodys as PRBody. I created SIM, force SPC load collectors. But it always give me errors. such as *** WARNING # 1200 Incorrect or inconsistent data found in $HMxx cards. (Obsolete data format or errors because of manual editing.). All HyperMesh specific data will be skipped from input files. Component information in the output file will be missing.To rebuild this information - read back and recreate input file using HyperMesh. This happened in line 197 of file "C:/My_Folder/V2.fem": $ 40 39 38 37 36 35 34 33 32 Force can't be referred. I am really struggling here, Is there any body can help ? Many thanks. Sophie V2.hm
  10. 既存のBEAMもしくはBAR要素を分割する場合は、プルダウンメニューPreferences⇒User Profilesから、ApplicationをEngineering Solutionsに切り替え、Aerospaceからご利用のソルバーを選んでOKボタンを押します。 プルダウンメニューAerospaceから、Beams⇒Split 1D Elems機能をご利用下さい。 ※当機能をご利用いただくには、HWDesktop2017.2.1以上のアップデートの適用が必要となります。
  11. How do you give Loads for uniformly varying loads or uniformly distributed loads on 1D elements in Hypermesh?
  12. Hello All, I have one rigid component and one elastic component (both are 2D). How can I connect these two components using 1D rigid elements? I am using Hypermesh with LS-Dyna interface. Thank you, Sriram
  13. Hi, I have a question on spotweld connectors. I have the following two components with shell mesh. I have a hard time choosing which option to use in spotweld. Pls help me. Please explain which one we should use and when? 1) Mesh Dependent - adjust realization- find nearest nodes 2) Mesh Dependent - adjust realization- project and find nodes 3) Mesh Dependent - adjust realization- ensure projection 4) Mesh Dependent - adjust mesh- remesh 5) Mesh Dependent - adjust mesh- smooth 6) Mesh Dependent - quad transition- imprint 7) Mesh Dependent - quad transition- skip imprint Which method is good and if I use different methods will I get different results? I have used (Mesh Dependent - adjust mesh- remesh) but then I feel that when I do this because of remesh my elements become smaller and fail in quality. Thanks, Datta
  14. Hi all, I was running optistruct 13.0 in order to make a correlation between a 1D and 3D model. First of all I simply created a fixed beam at one end, and the other end with a force of 1 kN. The outputs were very simple to obtain, indeed I could actually have pretty similar results in terms of stresses, displacements and constraining reactions. For the 3D the force and the constraint were applied using RBE2 elements, considering a node as independent and the ones on the cross-section of the beam as dependents, as you can see in the figures below I attached. Now the thing is, when I tried to make a correlation between a slightly different model than the one mentioned above, I couldn't obtain similar results, instead they were really different. I made a comparison between stresses, displacements and constraining reactions. The force applied was 1 kN as well, on the free end of the "T-structure". The section used for both 1D and 3D was an IPE360. For the beam of 1 m (the one where I applied the force) I used a freeze contact with the one of 2 m (fixed at both ends), in order to replicate the same condition of the 1D. The displacements were really different, almost 2 order of magnitudes of difference... the stresses obtained in the 1D was 4 times bigger than the one in the 3D and the constraining reactions (MRy) obtained didn't equal the real flexural moment generated by the force applied at the free end (it should equal 250000 N*mm as in the 1D, for a fixed-fixed condition). I attached all the comparisons and the .hm file if you wanna see the pre-process of the analysis. Could someone give me an explanation on this? Thanks in advance for any replies! model_1D.hm model_3D.hm
  15. Hello everyone, It would be really helpful, if some one can guide me through orientation of cbeam elements. By default, undesired orientation appears. I would like to orient the beam as picture 2. Thanks. Kind regards.
  16. what is meant by all the stress options we get while analysis of 1d beam element for torsion. for example CBAR/CBEAM LONG. STRESS SAC
  17. Hello, I'm trying to set up a simple rocker model using 1D elements for the actual bell crank in Hypermesh and then applying the force at one end of the rocker and then attaching a spring CELAS to the other side, my issue is that for some reason the whole model is blowing up under the loadstep, I'm not sure how to use the DOF for the spring modeled in blue, but I tried to use the correct pin flags on the 1Ds for the rocker so it's constrained to in-plane. I attahed the .hm file as well, any help is appreciated, thanks. 1d rocker.hm
  18. Hi, how to set up tension only (no compression, bending and torsion) 1D element in Radioss? I have tried with truss and spring elements. However, truss elements have axial compression stiffness and there is discrepancy in the plots, possibly because of geometric non-linearity. compression (truss in blue, spring in red color) tension spring_truss.hm
  19. Hello, I am new to Optistruct and having a repeating error for my 1D linear static free shape optimization of truss. When I try to run it w/Optistruct, the error that I get is: *** ERROR # 7315 *** No DSHAPE grids are on the boundary. Any ideas about a possible reason for this error? I checked card of DSHAPE and everything looks ok. Thanks, kosa26
  20. I'm trying to incorporate mesh independent 1D spotweld/rigid/beam elements between 2/more BIW panels via contact interface and seem unable to execute. Error: *** ERROR # 2371 *** SET SSID on CONTACT 1 is empty. (1D elements in slave set)
  21. CBAR 800 has invalid orientation vector ( zero length or parallel to the element axis). How to solve this error?
  22. Dear all, I am building an elastic multi-body dynamic model and I need to model the screws connecting some parts in the model. I plan to model the screws as 1D beam elements. I have seen that I have two options, CBEAM and CMBEAM. The documentation says: CBEAM: The CBEAM bulk data entry defines a beam element (BEAM) of the structural model. CMBEAM: Defines a beam element for multi-body dynamics solution sequence without reference to a property entry. I'm leaning towards CMBEAM more as it specifically states the element is for multi-body dynamics. But I don't quite understand the differences between the two. I have seen CMS models which use CBEAM instead of CMBEAM so it seems it is indeed possible to use CBEAM in an elastic MBD analysis. I would be grateful for any further information regarding the differences between CBEAM and CMBEAM, as well as which one should be used for an MBD analysis comprising flexbodies. Best regards, Deniz Bilgili
  23. Hi everyone, What is better approach to connect a 2D shell element to a 1D element? I have a assembly with 3 components, 1 bracket modeled by 2D elements which carries the load, 1 plate modeled by 2D elements likewise, where the bracket is lay and also, shall be interface component between bracket and beam component and 1 beam component modeled by 1D elements where loads and displacements must be transfered. The connection between bracket and plate was modeled by Cbush elements which represents bolts stiffness, therefore, my concern is how can I model the connection between plate and beam to represent a weld? I have attached a picture which it clarifies my problem. The green one is a bracket, red is a plate and magenta is a beam. Thank you, Richard
  24. Hi, I am relatively new to hypermesh, please help me with the following queries. Thanks for your time. Query 1: I have to model a beam element with square cross-section which comes in contact with 2D shell and represent the connection between them. For example, if the beam was a hollow square tube and a sheet metal comes in contact as illustrated in the picture below. Is there a way to represent the centroid of the tube on the midsurface of the sheet metal just by providing the offset distance, instead of representing the connection between them using rigids. I would also like to identify where the bar’s central axis lay in relation to the connection points. Query 2 : How to view the 1D elements in 3D representation, showing the cross-section and the orientation of the element with respect to the sheetmetal. ( in this case as shown below)
  25. Hi Guys, i do not know, how to definie line load for Truss/ Bar in Hyperworks. Best Regards, Leslie
×
×
  • Create New...