The only required file specification is the model input filename. 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. 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 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. 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.
The iterative process is based on the modified newton s method. Sol 106 nastran buckling help im trying to figure out how solution 106 works with regard no nonlinear buckling analysis. Nastran input files run on md nastran exactly how they would run on msc. To keep this users guide to a reasonable size, complete descriptions of all the msc nastran bulk data entries and case. Sol 402 is an integration of the wellknown and highly regarded simcenter samtech samcef solver into simcenter nastran. The best part about all of this is the fact that you already have these capabilities within your existing software. A simple topology optimization example with md r2 patran by cand. Nastran, software developed to help nasa engineers perform structural analysis in the 1960s, soon became a ubiquitous software tool in industry.
Material nonlinearity, large deformation nonlinear offsets complex physical phenomenon. This paper is intended for nx nastran users interested in exploring nonlinear solutions for their structural analysis. However, the model has large deformations and then i have decided to run a sol 106 to obtain more accurate results. A simple topology optimization example with md r2 patran by. Nastran software application was written to help design more efficient space vehicles such as the space shuttle. Im trying to figure out how solution 106 works with regard no nonlinear buckling analysis. 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. Multiple sequential load cases in nonlinear static analysis i am running a nonlinear contact analysis sol 106.
Specifically, this implementation is a type of oneway coupled multiphysics analysis. Here each element in fe model is given an additional property of relative density. Below is a summary of all output file specifications. The seminar workshop contains exercise books currently in use for mscnastran training courses. Visibility options in the model tree are in sync with the. Sol 103 requires restart from sol 106sol 129 to generate mnf with nonlinear preload. The commercial use of nastran has helped to analyze the behavior of elastic structures of any size, shape, or purpose. Detailed descriptions are given later in this section. Nonlinear analysis with sol 106 applied cax nx software. The problem is that when i do this, nothing has sense. 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. I ran solution 105 on my model and discovered that the mode that is applicable to my analysis is mode 3. F06 file under strain output you got from strainall case control command. Geometric nonlinearity becomes relevant when the structure is subjected to large displacement and rotation.
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. Femap with nx nastran faq frequently asked questions 1. Geometric nonlinear analysis of cantilever beam kit scc. Nonlinear static analysis, solution 106 nlstatic this solution is included with nx nastran basic. In sol 106,make sure you dont have any rbe2 or bar elements as they are linear elements. Handbook of nonlinear analysis solutions 106 and 129 siemens. Mnf files consists of these modes besides other information cb modes respect bcs and. Nx nastran connection elements rbe2, rbe3 and cbush and. New features for more information on any feature below, click the title link. Good for structural, mechanical, thermal and fluid applications trusses, plates, frames, shells, solid bodies. Nastran was released to the public in 1971 by nasas office of technology utilization. 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.
It is recommended to check all possible buckling modes with the linear buckling solution sequence sol 105 before making a run with sol 106. Note that convergence level,and add another loadcase and rerun with higher number of increments. Compute nodal displacements for desired time domain. Theequationofmotionaccountsfortheforcesactingonthestructureateachinstantin time. Sol 106 is applicable to static, quasistatic, and nonlinear buckling analyses. The interoperability between autodesk cfd and autodesk nastran incad should support fluid structural interaction fsi. The uainastran users guide provides you with detailed information on the modeling and analytical disciplines of the system. Msc nastran is a general purpose finite element program which solves a wide variety of engineering problems. 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. Nastran input files run on md nastran exactly how they would run. The stiffness matrix is updated as per the selection of the iterative method which has effect on computational efficiency. Free tutorials for nastran hello and welcome to autodesk. You apply the fluid boundary reactions static pressure results from a cfd simulation as loads on a structural analysis model.
Support files allow you to download all the supporting computer files for the mscnastran training courses listed under seminar workshop. Multiple sequential load cases in nonlinear static analysis. Jan 22, 2015 the best part about all of this is the fact that you already have these capabilities within your existing software. An addon option to nx nastran basic, it complements the linear static and mode solution capabilities found in the basic solution. Contact problems exhibit nonlinear effects due to changes in boundary conditions. Sol 401 is implemented in the standard simcenter nastran architecture and leverages the same code base as other simcenter nastran solutions. 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. Msc nastran 2012 linear static analysis users guide. Thebeamselementxaxiswillbeparalleltothebasicsystemsxaxisby ourchoiceofx1,x2,andx3x,y,andz. Whats new in 2018 nastran incad autodesk knowledge network. 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. Predictive engineering page proprietary document, please do not copy or distribute 11 of 24. 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.
Some application examples have accompanying msc inputoutput files for the exercises. It includes descriptions of finite elements, hints to improve your modeling practices, examples of bulk data use and many sample problems and their solutions. 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. In the most of cases the nonlinear effects in structures occur due to nonlinear material behavior and large deformations. Overview of nonlinear capabilities nonlinear effects in structures occur mainly due to nonlinear materials and large rotations. These nastran files do not have guiding documentation like the mdug, but gives the user an idea of the analysis set up. Nastran thermal analyzer nta may have difficulty in proceeding. Whats new in 2018 nastran incad autodesk knowledge. What are the differences between femap with nx nastran software and msc. 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. Nastran is the nasa structural analysis system, a finite element analysis program fea completed in the early 1970s. Geometric nonlinear effects need to be simulated when stiffness properties. 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. Either solver can be used to solve a large class of nonlinear solutions and.
Sol 106 how to understand convergence nastran engtips. All output file specifications will default to the model input filename base with the appropriate extension. Nx nastran basic can play a key role in your virtual product development process by providing the most. The most crucial data for successful nonlinear static solutions are contained in the nlparm bulk data entry. 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. Sol 106 nl statics sol 153 static heat s16 smx400, section 1. The approach of topology optimization used in nastran is based on the powerlaw approach first proposed in 2. The model input file can be specified on the nastran command line see section 1, nastran command line. Aeroelasticity in general considers inertial, elastic and aerodynamic forces acting on a structure.
Pdf of nonlinear analysis with sol 106 download seminar model files zip. 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. Dat file is submitted to the nx nastran solver, the mpcs are treated as a. All analysis examples will use the nx nastran linear solver sol 101 or the static nonlinear solver sol 106. Nlparm defines strategies for the incremental and iterative solution processes. Aeroelasticity in general considers inertial, elastic. Note that this list is not necessarily comprehensive.
Nx nastran aeroelasticity nx nastran sol 144 overview. It was the first of its kind and opened the door to computeraided engineering. Msc nastran is a powerful, highly flexible analysis and optimisation finiteelement program on an open architecture for analysing stress, vibration, and heat transfer characteristics of structures and mechanical components. Background adams represents deformation in flexible bodies through cb modes mnf files consists of these modes besides other information cb modes respect bcs and have the richness of vibration modes. 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. Solution sequence sol 106 consolidates all the nonlinear features in. Solution sequence sol 106 consolidates all the nonlinear features in msc. Nastran source code is integrated in a number of different software packages, which are. Calculix is most popular fea opensource package like codeaster and elmerfem. Nastran analysis capabilities linear statics sol 101 0d 1d 2d 3d elements plane stress plane strain axisymmetric composites substructures force pressure temperature displacement force. Accurate representation of preloaded flexible components in multibody system sukhpreet sandhu. Like many other finite elements codes nastran works with socalled input files that.
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. Performing organization name and address 502320102 universal analytics, inc. 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. Nx nastran advanced nonlinear solution 601701 fact sheet. Non linear static analysis of plate using nastran sol106 slideshare. Calculix binaries for ms windows, made with cygwin and arpack libraries. A simple topology optimization example with md r2 patran. 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. Non linear static analysis of plate with point load z direction nastran sol 106 carry out static analysis of plate. The macnealschwendler corporation msc was one of the principal and original developers of the publicly available nastran code. Nastran provides such a flexible array of analytical options, the user will find unending combinations of alternatives. If you installed nastran in the default location the documentation would be located in the directory c. Nastran has been released under the nasa open source agreement version 1. The results that you see marked as stress tensor in patran.
Nx advanced fem environment for nastran solver author. The nx nastran handbook of nonlinear analysis is a legacy document. The programmers manual also provides a complete description of the program, including the mathematical equations implemented in the code. Nx nastran handbook of nonlinear analysis solutions 106 and.