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3 edition of Cyclic creep analysis from elastic finite-element solutions found in the catalog.

Cyclic creep analysis from elastic finite-element solutions

Cyclic creep analysis from elastic finite-element solutions

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Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC], [Springfield, Va .
Written in English


Edition Notes

StatementA. Kaufman and S.Y. Hwang
SeriesNASA technical memorandum -- 87213
ContributionsHwang, S. Y, United States. National Aeronautics and Space Administration
The Physical Object
FormatMicroform
Pagination1 v
ID Numbers
Open LibraryOL14983128M

  Application of the moment scheme of the finite element method to the solution of problems with initial stresses in the incremental elasticity theory Strength of Materials, Vol. 38, No. 3 Influence of elastic inclusion morphology and matrix hardening behavior on bauschinger effect in metal matrix composites.   Conference: Life assessment of structural components using inelastic finite element analyses Title: Life assessment of structural components using inelastic finite element .   Marriott, D. L., , “Evaluation of Deformation or Load Control of Stresses Under Inelastic Conditions Using Elastic Finite Element Stress Analysis,” ASME PVP-Vol. , pp. 3–9. 2. Seshadri, R., and Fernando, C. P. D., , “Limit Loads of Mechanical Components and Structures Based on Linear Elastic Solutions Using the GLOSS R-Node.


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Cyclic creep analysis from elastic finite-element solutions Download PDF EPUB FB2

Cyclic creep analysis from elastic finite-element solutions A uniaxial approach was developed for calculating cyclic creep and stress relaxation at the critical location of a structure subjected to cyclic thermomechanical loading.

Cyclic creep analysis from elastic finite-element solutions book This approach was incorporated into a simplified analytical procedure for predicting the stress-strain history at a crack initiation site for life prediction by: 1.

Computers CYCLIC ELASTIC-PLASTIC CREEP STEADY-STATE ANALYSIS BY THE FINITE ELEMENT METHOD L. WANG and K. HSIAO Department of Aeronautics, Imperial College, London SW7, England (Received 27 August ) Abstractn this paper, a definition of generalized cyclic Author: L.

Wang, K. Hsiao. The basic numerical solution procedure for the elastic-plastic creep analysis is an incremental predictor-corrector iterative scheme combined with the initial strain approach.

Attention has been given to the time step increment strategy for combined plasticity and creep as Cited by: 3. Whilst elasticplastic stress analysis commonly involves designing a structure to sustain a load, creep analysis is used to design a structure for a life.

Time is the important new variable just as, in fatigue analysis, number of cycles is the important new variable. Creep is the permanent time dependent deformation occurring in structures. Typical mesh is as shown in the Fig. The analysis consists of two steps viz.

elastic step followed by creep. Elastic properties considered in the analysis are ܧ GPa, Ý and in the creep law (έsAï ³n), A was assumed to be Ã- MPa-ns The Cyclic creep analysis from elastic finite-element solutions book of stress exponent (n) was varied from 1 to by: 2.

Int. Pres. Ves. Piping 57 () Finite element stress analysis for steady creep Wang Xiaoning Wang Xucheng Department of Engineering Mechanics, Tsinghua University, BeijingPeople's Republic of China (Received 15 October ; accepted 30 November ) Based on the virtual work principle, an energy expression on the steady creep problem for three.

composite was analysed using finite element techniques. The analysis, based on the elastic and creep properties of each constituent, considered the influence of fibre-matrix bonding and processing-related residual stresses on creep and creep-recovery behaviour.

Both two- and three- dimensional finite element models were by:   Kaufman A, Hwang SY. Cyclic creep analysis from elastic finite element solutions. In: Proceedings of the Southeastern Conference on Theoretical and Applied Mechanics, University of South Carolina; Cited by: 4.

- The term finite element was first coined by clough in In the early s, engineers used the method for approximate solutions of problems in stress analysis, fluid flow, heat transfer, and other areas. - The first book on the FEM by Zienkiewicz and Chung was published in The finite element method (FEM), or finite element analysis (FEA), is a computational technique used to obtain approximate solutions of boundary value problems in engineering.

Boundary value problems are also called field problems. The field is the domain of. AAEl1 via Elastic Finite Element Program Step-by-Step Solution Based on Hereditary Integral Rate-Type Creep Law and Internal Variables.

The study builds on the principle of minimum potential energy to consistently account for the nonlinear creep deformation using finite elements.

Cyclic loading and evolution of damage within the Estimated Reading Time: 10 mins. Bathe, K. et al. On Some Current Procedures and Difficulties in Finite Element Analysis of Elastic-Plastic Response.

Computers Structures 12 (October ): Snyder, M.and K. Bathe. A Solution Procedure for Thermo-Elastic-Plastic and Creep Problems. Nuclear Engineering and Design 64 (March ): and Creep Analysis," in Finite Element Methods for Nonlinear Prob Solution instability arises if the Euler forward integration is used and the time step ~t is too large.

Elastic Elasto-plastic Creep The total Lagrangian formulation is employed for all analyses. problems, an eight-node shell element is to be derived for linear elastic analysis. Also, an incremental finite element method is to be formulated for large deflection analysis of shell structures.

In Section 4, an assumed stress hybrid finite element formulation is to be derived for creep analysis under the assumption of small displace-ment. Murray, Convergence of the solutions of the finite element method, Raketnaya Tekhnika i Kosmonavtika, No.

4 (). Murray and E. Wilson, Investigation of the supercritical behavior of thin elastic plates by the finite element method, Raketnaya Tekhnika i. High Temperature and Creep Fatigue Durability Analysis Software for Finite Element Models Unique, advanced fatigue analysis solution for creep and creep-fatigue interactions Case Study: Gas Turbine Blade Complex design including internal cooling channels to limit the maximum operating temperature.

Snyder, M.and K. Bathe. A Solution Procedure for Thermo-Elastic-Plastic and Creep Problems. Nuclear Engineering and Design 64 (March ): Rammerstorfer, F. et al. On Thermo-Elastic-Plastic Analysis of Heat-Treatment Processes Including Creep and Phase Changes.

Computers Structures 13 (October-December an "initial strain" type iterative finite element approach. In this approach, the deter- mination of stress history (or the stress rate) from a given strain history (or the strain Numerical results are presented for cyclic plasticity and creep, in order to verify the elastic-plastic solution method becomes the so-called "initial-strain.

Finite element analysis of cyclic indentation of an elastic-perfectly plastic half-space by a rigid sphere S L Yan and L Y Li Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 5,   Nonlinear time-dependent, sequentially coupled FE analyses are performed using temperature-dependent monotonic and cyclic material data for a high-nickel, high-chromium tool material, XN40F (40 Ni and 20 Cr).

The effect of monotonic and cyclic material data is compared vis-à-vis the anisothermal, elastic-plastic-stress response of the SPF by: 1. to be a general purpose finite element code for analysis of a wide range of problems involving solids and interfaces or joints, subjected to thermomechanical static, cyclic (repetitive) and dynamic loadings.

The code permits a range of constitutive models for elastic, plastic, and creep. A general purpose finite element code for the creep analysis of nuclear concrete struc_ tures has recently been developed by Anderson and coworkers ~1, 7,10J.

This program utilizes a rate type creep law proposed' in by Bazant [3], which is based on expanding the compli_.

A finite element elastic-plastic and creep analysis of a nozzle-to-cylinder intersection subject to cyclic thermal shock, internal pressure, and mechanical loads is presented. The nozzle configuration is that of the intermediate heat exchanger (IHX) for the Fast Flux Test Facility (FFTF).

tic-Plasticand Creep Problems," NuclearEngineering and Design, 64,The plane strain punch problem is also considered in Sussman, T. and K. Bathe, "Finite Elements Based on Mixed Inter­ polationfor Incompressible Elastic andInelastic Analysis," Computers Structures, to appear.

Thermal and elastic analysis. Temperature and elastic stress distributions in the examined rotor were obtained by solving the heat conduction and thermoelasticity equations given in Sections and Numerical solutions were obtained by means of the finite element Author: Mariusz Banaszkiewicz.

Try the new Google Books. Check out the new look and enjoy easier access to your favorite features. Try it now. Creep Analysis. Harry Kraus. Wiley, - Materiales - Desmoronamiento - pages.

0 Reviews. analysis applied approach approximate assumed axial beam becomes behavior bending Book bound calculated. A Simplified Method for Elastic-Plastic-Creep Structural Analysis A.

Kaufman Good agreement was found between these analytical results and nonlinear finite element solutions for these problems.

The simplified analysis program used less than 1 percent of the CPU time required for a nonlinear finite element analysis. Kinematic Hardening. Creep deformation of solid structures has become of increasing concern to the design and application of engineering structures in a high temperature environment.

Most nuclear reactor core and high temperature, high performance engine components are vulnerable to creep failure. Creep can also cause catastrophic failure of pressure : Tai-Ran Hsu. plastic conditions, including creep.

In the creep calculations the a-method of time stepping is employed. ' We present the algorithm for three-dimensional and two-dimensional solutions, including plane stress analysis.

In Section 3 we then present the calculation of the thermo-elastic-plastic-creep tangent constitutive matrix. The latter model is generally recommended for the cyclic loading analysis of structures due to its more precise results.

However, when creep deformation is considered, the cyclic loading analysis of structures based on the Prager and Frederick-Armstrong.

For the general case of including a creep law in a more complex finite element analysis, accumulating creep strain in the model will result in increased deformation, reduced stress or a combination of both behaviors. If an element is free to deform, the creep.

Although in cyclic analysis a step-by-step solution procedure has to be adopted to account for the plastic history, LIM will still have many advantages over the traditional finite element method Estimated Reading Time: 5 mins. The ultrasonic technique for determination of elastic engineering parameters of poplar wood, as input data in the finite element method, leads to a very close correlation with the experiment.

In this study, a new formulation of finite element method (FEM) has been extracted to analyze 2D viscoelastic problems. As there has not been enough accuracy and not sufficient literature in classical finite element modeling of viscoelastic problems, using a new set of shape functions founded on radial basis functions (RBFs) is recommended.

The file uses the linear elastic FEM results and generates an approximate time-dependent analysis. Presented results illustrates the accuracy of the method by comparing with finite element creep analysis results for several hot sections under creep conditions.

A cyclic elastic-perfectly plastic analysis method is proposed which provides a conservative estimate to cyclic creep strain accumulation within the ratchet boundary. The method is Estimated Reading Time: 5 mins. The objective in this lecture is to survey some recent advances in finite element methods for elasto-plastic and creep analysis: effective kinematic formulations, efficient finite element discretizations and the effective-stress-function algorithm for the integration of the highly nonlinear stress by: 2.

Dynamic responses of intervertebral disc during static creep and dynamic cyclic loading: a parametric poroelastic finite element analysis. Biomed. Eng. 25 Cited by: 5. These rules include major technical changes based on extensive committee reviews, comparisons with experimental data, evaluation versus cyclic inelastic finite element analysis, and comparison with actual failure experience at the Eddystone Plant.

Creep Ratcheting Bounds Based on Elastic Core Concept J. Porowski and W. ODonnell. Benchmarks for finite element analysis of creep continuum damage mechanics.

Comput Mater Sci. v25 i Google Scholar [8] Filho, O.J.A.G., Benchmark for finite element analysis of stress redistribution induced by creep damage.

Comput Mater Sci. v33 i4. S. Methods of Structural Analysis Elastic-Viscoelastic Analogy for Aging Materials tion in conjunction with the finite element method. Maxwell and Kelvin gradual microcracking, appears in high-stress creep.

The solution of the creep and shrinkage of a concrete body depends on the solution. Part 1: Finite element analysis}, author = {Ng, H W and Nadarajah, C}, abstractNote = {The Bree diagram has been incorporated in the ASME B and PV Code in the elevated temperature Code Case N47 as a design approach for limiting strain accumulation in cylinders subjected to cyclic thermal loadings under sustained primary stress.

Since the Bree.