The users manual is instructive and encyclopedic in nature, but is restricted to those items related to the use of nastran that are generally independent of the computing system being. Over the course of 30 plus years from that time he was a structural analyst. Rate the quality of this article from 5 high to 1 low. This allows them to be used online with any computer having the adobe acrobat reader version 3. Nastran is the nasa structural analysis system, a finite element analysis program fea completed in the early 1970s. Dec 03, 2015 nastran is the nasa structural analysis system, a finite element analysis program fea completed in the early 1970s. Significant time reduction for large fatigue and durability simulations. All the specified criteria must be satisfied to achieve convergence, except for an absolute convergence condition, under which the solution is. Over the course of 30 plus years from that time he was a structural analyst using nastran and subsequently the head of an analysis.
Multiple sequential load cases in nonlinear static. Nastran software application was written to help design more efficient space vehicles such as the space shuttle. Create a geometrical representation of a cantilever lug. Nonlinear analysis with sol 106 2015 predictive engineering page proprietary document, please do not copy or distribute 8 of 24 nx nastran linear contact for solution sequence 101. Both of these solution sequences can accommodate superelements. I ran solution 105 on my model and discovered that the mode that is applicable to my analysis is mode 3. What is the difference between nastran sol 108 sol 111. The smart default parameters are specifically adjusted based on the level of nonlinearity in the simulation model, for example if contact analysis is present or not. 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. The theoretical manual gives an excellent introduction to nastran and presents developments of the analytical and numerical procedures that underlie the program.
Accurate representation of preloaded flexible components in multibody system sukhpreet sandhu. 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 advanced fem environment for nastran solver author. Solution is attempted again, and if it does not converge again, another halving bisection in nastran speak is done, up to a maximum number of bisections controlled by maxbis entry on nlparm entry. Nastran converged to an optimum solution within 4 cycles. From linear to nonlinear simulations inside msc nastran. It would be good to start by trying to determine if the issue is with nastran or with postprocessing. Femap with nx nastran siemens digital industries software. The best part about all of this is the fact that you already have these capabilities within your existing software.
Nastran for windows, can be licensed in two ways standalone using a hardware security device dongle, or floating on a network. Linearstaticanalysis of a solid lug x y z 1 r t z mscnastran 120 exercise workbook version 70 mscpatran 7. In addition, many errors from previous versions are corrected. An addon option to nx nastran basic, it complements the linear static and mode solution capabilities found in the basic solution. Then pynastran record all these cards under the format of class nsm1.
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. Frequencyharmonic response analysis nastran sol 111. Spring element with nonlinear analysis parameters large displacements on. An analysis, translator, or feature type was specified that is not licensed or currently supported. Nastran analysis capabilities nonlinear static sol 106 transient sol 129 implicit sol 600 f u displacement. The version of pynastran reads cards nastran nsm, nsm1, nsml, nsml1 of the bulk. The unique data required for sol 106 is supplied on the nlparm entry, which controls the incremental and iterative solution processes. Marc solver to analyze a wide variety of structural problems subjected to geometric and material nonlinearities, and contact. A simple topology optimization example with md r2 patran. Nonlinear analysis with sol 106 applied cax nx software.
Field definition type default tid table identification number. Hundreds of companies who started in msc nastran for linear statics and dynamics have now added sol 400 because it is. This presentation will provide theory, implementation, an nonlinear analysis with sol 106 applied cax nx software, training and support. Spring element with nonlinear analysis parameters large displacement off. Im trying to figure out how solution 106 works with regard no nonlinear buckling analysis.
Sol 106 is applicable to static, quasistatic, and nonlinear buckling analyses. 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. This seminar is intended for nx nastran users that are interested in nonlinear analysis but arent quite sure when, why and how to use it. Demonstrate the effects of geometric nonlinear analysis and how to. Msc simcompanion implicit nonlinear sol 600 users guide. Subsections of a design can be modeled and then larger groupings of these elements can again be modeled. It is important that the most crucial data for successful nonlinear static solutions are contained in the nlparm entry, which defines strategies for the incremental and iterative solution processes. Sol 103 requires restart from sol 106sol 129 to generate mnf with nonlinear preload better representation of flexbodies more accurate multibody simulations. Nastran element code base is a subset of md nastran. Nastran system1074 if you define 1 cpu, nastran will use parallel libraries on 1 cpu. Performing organization name and address 502320102 universal analytics, inc.
Nastran thermal analyzer nta may have difficulty in proceeding. Nastran, software developed to help nasa engineers perform structural analysis in the 1960s, soon became a ubiquitous software tool in industry. The direct frequency response method solves the coupled equations of motion in terms of forcing frequency. Bill case was a member of the project management team for the development of the popular nastran finite element analysis computer program developed in the late 1960s and early 1970s for the national aeronautics and space administration nasa. Nastran source code is integrated in a number of different software packages, which are. All the additional nastran cards necessary to perform a frequency. By employing ansa for nastran fatigue analyses, numerous benefits are realized that greatly facilitate the cae processes for fatigue analyses including. This information is to be used in conjunction with the examples for random and sine vibration analysis runs. Defines a tabular function for use in generating timedependent dynamic loads. But for nsm and nsm1 the value type is surface mass kg m.
It was the first of its kind and opened the door to computeraided engineering. Solution sequences 106 and 129 consolidate all the nonlinear features described above. Nastran frequency response analysis run using a large seismic mass. The macnealschwendler corporation msc was one of the principal and original developers of the publicly available nastran code. S1121 invalid license for analysis, translator, or feature type cause. For further information on nastran input files and command decks, see the referenced nastran user guides 5,6. Nx nastran basic can play a key role in your virtual product development process by providing the most. Integer 0 required xaxis specifies a linear or logarithmic interpolation for the xaxis, one of the following character variables. Nx nastran performs the convergence test at every iteration with the criteria you specify in the conv field.
Sol 129 is primarily applicable to dynamic transient response analysis with some limited static analysis capability. Nastran implicit nonlinear sol 600 is an application module in the msc. If you currently use a dongle to license your current software, you. Matlab combines a desktop environment tuned for iterative analysis and design processes with a programming language that expresses matrix and array mathematics directly. Sol 106 non linear elements sol 106 non linear elements josemanuellodoso aeronautics op. Users can model timedependent and timeindependent material. Nastran theoretical manual pdf click here pdf manual. Nastran sol 400 as robust, efficient, and user friendly as possible. You can specify any combination of u for displacement, p for load, and w for work. Nastran 2014 design sensitivity and optimization users guide. Msc nastran 2012 linear static analysis users guide.
Learn how to run a simple linear analysis, interpret the results and understand the difference between linear and nonlinear behavior. Nastran frequency response example using a seismic mass. Frequencyharmonic response analysis nastran sol 111 sol 108. The nx nastran linear contact has a legacy directly from sdrcideas. This book is one in a series of users guides describing the use of msc nastran.
Meta offers a variety of capabilities for 3dresults handling and along with its automation and reporting capabilities comprise a complete post. Thebeamselementxaxiswillbeparalleltothebasicsystemsxaxisby ourchoiceofx1,x2,andx3x,y,andz. Sol 106 nonlinear statics sol 400 improvements 3d contact advanced elements and materials large rotation rbes. Mdmsc nastran user meeting 2011 20 smp requires you to define only the number of cpus you want to use this can be done as a keyword or as a system cell e.
Sol 106 how to understand convergence nastran engtips. Nastran system that pairs the full features of msc. Sol 108 to perform direct frequency response analysis. Nastran was released to the public in 1971 by nasas office of technology utilization. Sol 108 does a complex matrix solve at each requested frequency. 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 nonlinear transient. The commercial use of nastran has helped to analyze the behavior of elastic structures of any size, shape, or purpose.
The user can move through the optimization cycles and view the results of each cycle, including shape change. Msc nastran nonlinear analysis spring element with nonlinear analysis parameters large displacement off. Either update your license, or select a different analysis, translator or feature type, or set the licensecode model initialization directive to thfk. 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. You should consult the msc nastran quick reference guide for detailed descriptions of msc nastran input formats. Geometric nonlinear effects need to be simulated when stiffness properties. The first book in the series, getting started with msc nastran users guide, is intended for those readers who are unfamiliar with the finite element method, those who have never run msc nastran, or those who are interested in a general overview of msc nastrans capabilities. Nx nastran advanced nonlinear solution 601701 fact sheet. After initialisation, a first finite element analysis is. Default is 5, max value is 10, but if you have to go higher, it most likely indicates either. Facilitation of the process as it can be performed in a single environment. As part of uais ongoing modernization program, all uainastran manuals, as well as those for other uai software products, continue to be delivered in adobe portable document file pdf format. 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. Sol 103 requires restart from sol 106 sol 129 to generate mnf with nonlinear preload better representation of flexbodies more accurate multibody simulations.
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