Nonlinear analysis with sol 106 applied cax nx software. Either solver can be used to solve a large class of nonlinear solutions and. Sol 106 nonlinear statics sol 400 improvements 3d contact advanced elements and materials large rotation rbes subcase step hht integration method nonlinear summary table history of sol 400 sol 129. Femap with nx nastran faq frequently asked questions 1. Free tutorials for nastran hello and welcome to autodesk. Nastran input files run on md nastran exactly how they would run.
Some application examples have accompanying msc inputoutput files for the exercises. Multiple sequential load cases in nonlinear static analysis. Sol 106 nastran buckling help im trying to figure out how solution 106 works with regard no nonlinear buckling analysis. Nastran provides such a flexible array of analytical options, the user will find unending combinations of alternatives.
New features for more information on any feature below, click the title link. It was the first of its kind and opened the door to computeraided engineering. Accurate representation of preloaded flexible components in multibody system sukhpreet sandhu. It includes descriptions of finite elements, hints to improve your modeling practices, examples of bulk data use and many sample problems and their solutions. Nx nastran aeroelasticity nx nastran sol 144 overview. The macnealschwendler corporation msc was one of the principal and original developers of the publicly available nastran code. In sol 106,make sure you dont have any rbe2 or bar elements as they are linear elements.
Support files allow you to download all the supporting computer files for the mscnastran training courses listed under seminar workshop. To keep this users guide to a reasonable size, complete descriptions of all the msc nastran bulk data entries and case control commands have not been included. This paper is intended for nx nastran users interested in exploring nonlinear solutions for their structural analysis. The best method i use is to take a look to the nx nasran analysis monitor when launching the nastran job from inside femap, here i see how the solution progress, not need to take a look to. What are the differences between femap with nx nastran software and msc. The nx nastran handbook of nonlinear analysis is a legacy document. The demonstration problem manual presents a discussion of the sample problems delivered with nastran, thereby illustrating the formulation of the different types of problems that can be solved with nastran. Gap elements compression only for contact, tension only for cables the best part about all of this is the fact that you already have these capabilities within your existing software.
It is recommended to check all possible buckling modes with the linear buckling solution sequence sol 105 before making a run with sol 106. The results that you see marked as stress tensor in patran. The programmers manual also provides a complete description of the program, including the mathematical equations implemented in the code. The executive system allocates system files to the data blocks in the fiat file allocation table and. Aeroelasticity in general considers inertial, elastic and aerodynamic forces acting on a structure. Solution sequence sol 106 consolidates all the nonlinear features in. Sol 106 is applicable to static, quasistatic, and nonlinear buckling analyses. Specifically, this implementation is a type of oneway coupled multiphysics analysis. Msc nastran is a general purpose finite element program which solves a wide variety of engineering problems. Sol 106 how to understand convergence nastran engtips. To keep this users guide to a reasonable size, complete descriptions of all the msc nastran bulk data entries and case. The translator attempts to create a history section based on the contents of the case control data in the nastran file.
An addon module of nx nastran basic, the advanced nonlinear solver is an integration of the wellknown and highly regarded adina solver into nx nastran as solution 601 for implicit solutions or solution 701 for explicit solutions. The problem is that when i do this, nothing has sense. Note that convergence level,and add another loadcase and rerun with higher number of increments. This paper is intended to provide the msc nastran user with the knowledge to obtain the best performance out of msc nastran for static analysis, eigenvalue analysis, dynamic analysis, and. Geometric nonlinear effects need to be simulated when stiffness properties. The zip and tgz files are identical, except that on linux, unix, and macos, unpacking. The model input file can be specified on the nastran command line see section 1, nastran command line. The other thing to try out is to make more than one load cases and increase the number of increments on nlparm card until you see any convergence.
Material nonlinearity, large deformation nonlinear offsets complex physical phenomenon. F06 file under strain output you got from strainall case control command. All output file specifications will default to the model input filename base with the appropriate extension. Whats new in 2018 nastran incad autodesk knowledge network. Nonlinear analysis with sol 106 2015 predictive engineering page proprietary document, please do not copy or distribute 2 of 24 what this white paper covers.
Pdf of nonlinear analysis with sol 106 download seminar model files zip. Nx nastran dynamic response software enables you to calculate your products forced dynamic response to inputs loads or motions that vary with time or frequency. Good for structural, mechanical, thermal and fluid applications trusses, plates, frames, shells, solid bodies. The two solutions are very similar and the femap component is exactly the same except that with femap with nx nastran, you will benefit by being able to access the very latest release. I have run and am familiar with a preload condition being run load case 1 then holding that preload constant while a second load case load case 2 is imposed. Sol 401 is implemented in the standard simcenter nastran architecture and leverages the same code base as other simcenter nastran solutions. Contact problems exhibit nonlinear effects due to changes in boundary conditions. The only required file specification is the model input filename. Theequationofmotionaccountsfortheforcesactingonthestructureateachinstantin time. The iterative process is based on the modified newton s method. The seminar workshop contains exercise books currently in use for mscnastran training courses. Nx nastran handbook of nonlinear analysis solutions 106 and.
I ran solution 105 on my model and discovered that the mode that is applicable to my analysis is mode 3. Nastran has been released under the nasa open source agreement version 1. Nastran analysis capabilities linear statics sol 101 0d 1d 2d 3d elements plane stress plane strain axisymmetric composites substructures force pressure temperature displacement force. Calculix binaries for ms windows, made with cygwin and arpack libraries. Nx advanced fem environment for nastran solver author. Sol 106 nl statics sol 153 static heat s16 smx400, section 1. All analysis examples will use the nx nastran linear solver sol 101 or the static nonlinear solver sol 106.
Dat file is submitted to the nx nastran solver, the mpcs are treated as a. Sol 103 requires restart from sol 106sol 129 to generate mnf with nonlinear preload. Performing organization name and address 502320102 universal analytics, inc. Aeroelasticity in general considers inertial, elastic. Nastran was released to the public in 1971 by nasas office of technology utilization. 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. Overview of nonlinear capabilities nonlinear effects in structures occur mainly due to nonlinear materials and large rotations. Nx nastran basic can play a key role in your virtual product development process by providing the most. An addon option to nx nastran basic, it complements the linear static and mode solution capabilities found in the basic solution. Jan 22, 2015 the best part about all of this is the fact that you already have these capabilities within your existing software. Msc nastran 2012 linear static analysis users guide.
Thebeamselementxaxiswillbeparalleltothebasicsystemsxaxisby ourchoiceofx1,x2,andx3x,y,andz. Im trying to figure out how solution 106 works with regard no nonlinear buckling analysis. You apply the fluid boundary reactions static pressure results from a cfd simulation as loads on a structural analysis model. Handbook of nonlinear analysis solutions 106 and 129 siemens. Calculix is most popular fea opensource package like codeaster and elmerfem.
To facilitate the use of these example problems, all of the input files used in this guide are included with the standard msc nastran delivery media. The commercial use of nastran has helped to analyze the behavior of elastic structures of any size, shape, or purpose. The best part about all of this is the fact that you already have these capabilities within your existing software. Solution sequence sol 106 consolidates all the nonlinear features in msc. Contact large displacement rbes one step procedure to generate mnf with nonlinear preload sol 103 requires restart from sol 106 sol 129 to generate mnf with nonlinear preload. Note that this list is not necessarily comprehensive. Nx nastran advanced nonlinear solution 601701 fact sheet. Below is a summary of all output file specifications. Nx nastran basic is the core subset of nx nastran software and includes a robust suite of linear statics, normal modes, buckling analyses, heat transfer and basic nonlinear capabilities. Compute nodal displacements for desired time domain. Nastran source code is integrated in a number of different software packages, which are.
Predictive engineering page proprietary document, please do not copy or distribute 11 of 24. A simple topology optimization example with md r2 patran by cand. These nastran files do not have guiding documentation like the mdug, but gives the user an idea of the analysis set up. Mnf files consists of these modes besides other information cb modes respect bcs and. Nastran is the nasa structural analysis system, a finite element analysis program fea completed in the early 1970s. Detailed descriptions are given later in this section. Unless the user is a member of a large team where at least one member is familiar with the finiteelement method and the nastran modeling, he will have to search through widely scattered literature and documents before finding what he needs. However, the model has large deformations and then i have decided to run a sol 106 to obtain more accurate results.
The stiffness matrix is updated as per the selection of the iterative method which has effect on computational efficiency. This fact sheet provides an overview of the the nastran environment that provides the tools needed to build models, define nastran solution parameters, view the solution results enables bidirectional nx importexport capabilities fromto nastran runrea keywords. The uainastran users guide provides you with detailed information on the modeling and analytical disciplines of the system. Nastran thermal analyzer nta may have difficulty in proceeding. Geometric nonlinearity becomes relevant when the structure is subjected to large displacement and rotation. Nx nastran connection elements rbe2, rbe3 and cbush and. The nx nastran aeroelasticity software solution enables you to analyze models in which structures are immersed in fluid flows, which as a result effect the stiffness of the structure itself. Nastran input files run on md nastran exactly how they would run on msc. Visibility options in the model tree are in sync with the. For normal termination, end the nastran input data with the line enddata nastran solution sequences are translated to the abaqus procedures listed in table 3. Nastran software application was written to help design more efficient space vehicles such as the space shuttle. There may be other minor changes to the software that are not enumerated here.
Like many other finite elements codes nastran works with socalled input files that. Multiple sequential load cases in nonlinear static analysis i am running a nonlinear contact analysis sol 106. The approach of topology optimization used in nastran is based on the powerlaw approach first proposed in 2. Nastran, software developed to help nasa engineers perform structural analysis in the 1960s, soon became a ubiquitous software tool in industry. If you installed nastran in the default location the documentation would be located in the directory c. A simple topology optimization example with md r2 patran by. Nlparm defines strategies for the incremental and iterative solution processes. Geometric nonlinear analysis of cantilever beam kit scc. The most crucial data for successful nonlinear static solutions are contained in the nlparm bulk data entry. Non linear static analysis of plate with point load z direction nastran sol 106 carry out static analysis of plate. In the most of cases the nonlinear effects in structures occur due to nonlinear material behavior and large deformations. Non linear static analysis of plate using nastran sol106 slideshare. Nastran is a finite element analysis fea program that was originally developed for nasa in the late 1960s under united states government funding for the aerospace industry.
This paper is intended to provide the msc nastran user with the knowledge to obtain the best performance out of msc nastran for static analysis, eigenvalue analysis, dynamic analysis, and nonlinear analysis. A simple topology optimization example with md r2 patran. The interoperability between autodesk cfd and autodesk nastran incad should support fluid structural interaction fsi. Nonlinear static analysis, solution 106 nlstatic this solution is included with nx nastran basic. Here each element in fe model is given an additional property of relative density.
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