Nastran rotordynamics damage resulting from bladeout msc. Creating geometry and surfaces in patran the goal of this exercise is to create a 2d geometry, add surfaces, and apply a distributed load. This white paper assumes that the reader has the basics of fea down pat and an inkling of how relements work. Advanced nonlinear is an addon solver to the basic femap suite of tools. Msc nastran, patran tutorial normal modes, point masses and linear springs duration. Comparing rbe2 vs rbe3 elements, rbe3 on the other had is not a rigid element so to speak. Rbe2 and rbe3 are rigid geometrically one dimensional elements. Normal modes rigid element analysis with rbe2 and conm2. The rbe3 is a linear interpolation element often used to distribute either loading or mass, and the rspline is an interpolation element that uses the beam equations to. Simulating reality, delivering certainty msc software. A multiphase course project was recently added to the curriculum to enhance experiential learning in a more openended design environment. You can find it in the femap analysis manager allowing quick.
There you will find several sample models that are automatically generated, calculated and postprocessed. The transition from a coarse mesh to a fine mesh, or vice versa, may not always be an easy task. Lastly, i could estimate effective material properties and apply those as a homogeneous solid. The motion at the dependent node is a weighted average of the motion at the independent nodes.
This is why it is also known as an interpolation r element. Extensive use of software tutorials developed at usafa substantially reduces the time required to achieve proficiency using basic modeling skills. Shareware junction periodically updates pricing and software information of msc. Esa manufacturing and design multipoint constraints mpc. The programs installer file is commonly found as patran. Create a rigid link mpc for force application at the free end of the cantilevered beam. Patran is the worlds most widely used prepostprocessing software for finite element analysis fea, providing solid modeling, meshing, analysis setup and postprocessing for multiple solvers including msc nastran, marc, abaqus, lsdyna, ansys, and pamcrash.
Enter the thickness and orientation of each ply the ply thickness can be entered either as the actual thickness, or as a. Major areas of focus in this release include the following. This program was originally developed by msc software. The thermal cte capability of the rbe2 connection will also be covered for completeness.
In patran, click on the composite laminate icon to bring up the form. Msc nastran is the premiere finite element analysis solver that continues to be the selected choice by engineers for over 50 years. Nx nastran connection elements rbe2, rbe3 and cbush and how amazingly useful they are for fea modeling. Integer 0 required gn identification number of grid point to which all six. Msc software adopted a similar strategy during 200809 by introducing a bunch of multidisciplinary preprocessing tools such as md patran and later simexpert. The best fea mesh transition msc nastran msc software. Rbe2 double dependency onda marineocean 14 jun 15 12. Interpolation elements consist of the rbe3 and rspline. The difference between rbe2 and rbe3 elements, using a simple beam example duration. Rbe3 elements do not add artificial stiffness to the structure like the rbar. A typical workflow for an analysis using the finite element method and msc.
I could create multiple ply tables, where each ply table would correspond to a certain hex element basically a portion of the laminate. Rbe2 engineering science analysis manufacturing and design. Workshop 5 rigid element analysis with rbe2 and conm2 once you have clicked in the select members databox select the point element icon, then screen select element 51. Defines a rigid body whose independent degrees of freedom are specified at a single grid point and whose dependent degrees of freedom are specified at an arbitrary number of grid points. Type cd patran you need to do this for each session. The piece consists of 2 hollow spheres that have constrained all movements except the rotation in x like a joint on the inner surface. The bulk data section of the input deck has been changed or was created on a different computer. Integer 0 required refc component numbers at the reference grid point. Efficient with patran patran getting msc fatigue by darrel sinclair. Best way to apply composite ply table to solid hex.
In patran go to helptutorials to access the patran tutorial application. Workshop 5 rigid element analysis with rbe2 and conm2 submit the input. Msc software corporation is an american software company based in newport beach, california, that specializes in simulation software. Ideally, patran has a way to essentially distribute a ply table through a mesh. Group expand group expand gives the users the ability to c. Field definition type default eid element identification number. It does not come standard but is an added package that you can buy. Patran nastran solver k u f solve for u compute strain compute stress. The objective is to describe in detail how to use rconnections and cbush elements correctly and with confidence. If you wish to access simcompanion and the msc case management portal, you must use your company university email address. There are a few demos available in the analysis menu. Please note that your email address will be your identification to our site. Please backup any patran files you modify, and the following is something i have not tried myself. The export process creates a set of fully editable.
All these products had a very long gestation period with little luck in making a long term market presence. Please keep this in mind when using previously constructed apis with femap v2020. Your web browser must have javascript enabled in order for this application to display correctly. Nastran rotordynamics types of analyses engine performance critical speeds whirl forced response unbalance, cabin noise damping static analysis external loads, maneuver loads. Error mpc with rigid elements connectors autodesk community. Nx nastran connection elements rbe2, rbe3 and cbush and. The latest version of the program can be downloaded for pcs running windows xp7810, 32bit. Hi all, i am new using the nastran in cad simulation software, and i would like to simulate a piece with rigid connectors. Msc software corporation was formed in 1963 under the name macnealschwendler corporation msc, by dr richard. Lastly, the cbush element will be introduced and applications given on how to use this replacement for the celas element. Of these elements, the rbar and rbe2 are the most commonly used. Lesson 16 rigid element analysis with rbe2 mscnastran 120 exercise workbook version 70 mscpatran 7. By default, a dependent degree of freedom assigned by one element cannot be assigned dependent by another rigid element or mpc entry and cannot be additionally constrained e. Nastran primer for rotordynamics chuck lawrence nasa glenn cleveland, ohio msc.
Defines the motion at a reference grid point as the weighted average of the motions at a set of other grid points. What is rbe2, rbe3 in a finite element analysis and what. How to create a finite element mesh in patran 2010 duration. These steps combined with the practice you completed with the 2d link bar will give you all the necessary tools to complete the project. Generic email addresses such as gmail, hotmail, yahoo, etc, will not be accepted. Integer 0 required refgrid reference grid point identification number. Pwi grants to licensee a nonexclusive, nontransferable license to use the licensed prod. We are in the process of updating our apis to be compatible with v2020. What is a possible way to connect solid elements with. It is a good idea to restart patran in the directory in which the database resides. Software piracy is theft, using crack, password, serial numbers, registration codes, key generators, cd key, hacks is illegal and prevent future development of msc. From the hpc capability to the high degree of certainty it delivers, msc nastran is engineered to give you a heightened awareness of how your products will behave. Patran once the 3d model of the part is prepared in cad system it is imported to fea preprocessor. If you dont want to type these two commands every time you start a patran database, you can modify the following file c.
Modeling a bolt is complicated, and in many cases it is known from experience that the bolt nev. The components indicated by cm are made dependent at all grid points gmi. This is accomplished by amending the dmap sequence being used for the analysis by placing an alter in the executive control deck of the nastran input file. Use to connect a concentrated mass with 6 dof to solid element nodes with 3 dof dof for flange nodes ux,uy,uz dof for mass ux,uy,uz, rx,ry,rz elements create mpc rbe2 click create dependent radio button turn off auto execute select flange nodes then pick ux,uy,uz for dof apply click create independent select mass element node continue reading rbe2. They are used for creating connections such as representing a bolted connection. The downfalls on using this element will be discussed and also why this element is a useful as a companion to the rbe2 and rbe3 elements. Use weld shell element to join shell and solid element. One common method of performing a transition is to use an intermediate belt of triangular elements as shown in figure 98a. Solidworks becomes your fea platform by embedding high accuracy, industry proven nastran fea solvers directly in solidworks, your familiar cad environment and technology becomes your platform for creating simulation models, launching various analyses, and viewing the results.
719 538 1253 236 522 624 905 926 1279 976 824 1296 1092 1242 1489 1542 1376 1609 234 267 444 1181 893 660 952 1110 904 510 203 1138 1361 435 150 1493 917 337 1183 1201