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Journal articles on the topic 'Fatigue strength analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Saito, Ryoichi, Nao-Aki Noda, Yoshikazu Sano, Jian Song, Takeru Minami, Yuuka Birou, Arata Miyagi, and Yinsa Huang. "Fatigue Strength Analysis and Fatigue Damage Evaluation of Roller Chain." Metals 8, no. 10 (October 18, 2018): 847. http://dx.doi.org/10.3390/met8100847.

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This paper deals with the roller chain commonly used for transmission of mechanical power on many kinds of industrial machinery, including conveyors, cars, motorcycles, bicycles, and so forth. It consists of a series of four components called a pin, a bush, a plate, and a roller, which are driven by a sprocket. To clarify the fatigue damage, in this paper, the finite element method (FEM) is applied to those components under three different types of states, that is, the press-fitting state, the static tensile state, and the sprocket-engaging state. By comparing those states, the stress amplitude and the average stress of each component are calculated and plotted on the fatigue limit diagram. The effect of the plastic zone on the fatigue strength is also discussed. The results show that the fatigue crack initiation may start around the middle inner surface of the bush. As am example, the FEM results show that the fatigue crack of the inner plate may start from a certain point at the hole edge. The results agree with the actual fractured position in roller chains used in industry.

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2

Liao, Shu Hua, Peng Xu, Liang Zhao, Hai Jian Li, and Kun Chen. "Radial Fatigue Analysis of Steel Hub Based on Finite Element Analysis." Applied Mechanics and Materials 513-517 (February 2014): 2620–24. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.2620.

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The fatigue strength of the steel hub is important to the safety of the automotive wheel and the dynamic radial fatigue test is also one of the three performance experiments for evaluating the safety of automotive wheel. This paper applied Abaqus in analyzing the static strength of the 13×4.5B automotive steel hub according to the test requirement of national standard, and to calculate the hubs fatigue life by Fatigue. Compare the FEA result and the test result, find the two results are very closer which proved the correctness of the static strength analysis and the fatigue strength analysis, and the FEA simulation can efficiently predict the fatigue life of automotive wheel and it does a good for the wheel design to reduce the design cost and to shorten the development cycle.

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3

WeiDa, Kong. "Fatigue strength analysis of desilting platform structure." Journal of Physics: Conference Series 1885, no. 3 (April 1, 2021): 032011. http://dx.doi.org/10.1088/1742-6596/1885/3/032011.

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4

Han, Feng Lei, Chun Hui Wang, An Kang Hu, and Ya Chong Liu. "Fatigue Strength Assessment Analysis of Large Container Ship." Applied Mechanics and Materials 602-605 (August 2014): 385–89. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.385.

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Fatigue assessments of container ship structures can be processed using various direct calculation approaches or various approaches of classification societies [1,2]. In this investigation, the fatigue strength assessment to the key positions of a 9200TEU container ship has been performed ,subjected to the rules of BV about fatigue strength specification of large container ships, based on design wave method and Miner fatigue cumulative damage theory analysis method. Wave loads have been computed using linear wave load calculation method based on three-dimensional potential flow theory. And the fatigue strength assessment of the typical hot spot structures has also been conducted based on a series of critical single design wave.

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5

NAGASHIMA, Nobuo, and Saburo MATSUOKA. "3604 Analysis of fatigue properties for nanoscopic strength analysis." Proceedings of the JSME annual meeting 2006.1 (2006): 745–46. http://dx.doi.org/10.1299/jsmemecjo.2006.1.0_745.

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6

Li, Xue Yi, Chao Chao Li, Bin Bing Huang, and San Shuai Li. "Contact Fatigue Analysis of Mine Helical Cylindrical Gear Based on ANSYS Workbench." Applied Mechanics and Materials 246-247 (December 2012): 12–16. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.12.

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A general method for calculating contact fatigue strength of Mine helical cylindrical gear was studied in this paper. Both the Solid model and finite element model were created in ANSYS. Based on the fatigue analysis module of the ANSYS Workbench, The contact fatigue strengths of the helical cylindrical gear pair were calculated, and corresponding contact fatigue lives and safety factors of two gears in any meshing position were obtained and shown in contour map. A simulation calculation for a pair of mine helical cylindrical gears was carried out. Simulation results show that calculation of the contact fatigue strength of helical cylindrical gear by this method is more scientific and reasonable than traditional empirical method.

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7

Li, Xiao Jun, Long Yin, Lei Ni, and Ming Hai Li. "The Static Strength and Fatigue Strength Analysis of a Certain Type of Cooling Fan." Advanced Materials Research 1008-1009 (August 2014): 972–78. http://dx.doi.org/10.4028/www.scientific.net/amr.1008-1009.972.

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This paper estimates the static strength of a certain type of cooling fan designed by a company in the rotating speed of 1260 rpm and 1380 rpm, evaluates static strength according to the cooling fan’s permissible stress in F state and T1 state, estimates the fatigue strength according to the operation load of cooling fan suffering from different direction when locomotive running and evaluates the cooling fan fatigue life according to the IIW standard. Static strength and fatigue strength calculation using ANSYS companies in the United States commercial version of the ANSYS software to complete.

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8

Ekaputra, I. M. W., Rando Tungga Dewa, Gunawan Dwi Haryadi, and Seon Jin Kim. "Fatigue Strength Analysis of S34MnV Steel by Accelerated Staircase Test." Open Engineering 10, no. 1 (May 27, 2020): 394–400. http://dx.doi.org/10.1515/eng-2020-0048.

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AbstractThis paper presents the reliability estimation of fatigue strength of the material used for crank throw components. The material used for crank throw components is forged S34MnV steel and subsequently heat-treated by normalising and tempering. High cycle fatigue testing under fully reversed cycling (R = −1) was performed to determine the fatigue limit of the material. The staircase test method is used to obtain accurate values of the mean fatigue limit stress until a number of cycles up to 1E7 cycles. Subsequently, the fatigue test results depend strongly on the stress step and are evaluated by the Dixon-Mood formula. The values of mean fatigue strength and standard deviation predicted by the staircase method are 282 MPa and 10.6MPa, respectively. Finally, the reliability of the design fatigue strength in some selected probability of failure is calculated. Results indicate that the fatigue strength determined from accelerated staircase test is consistent with conventional fatigue testing. Furthermore, the proposed method can be applied for the determination of fatigue strength and standard deviation for design optimisation of S34MnV steel.

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9

Wang, Jian Hua, Jian Hua, and Chao Li. "Fatigue Strength and Modal Analysis of S195 Engine Crankshaft." Applied Mechanics and Materials 120 (October 2011): 81–84. http://dx.doi.org/10.4028/www.scientific.net/amm.120.81.

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Fatigue rupture is the major reason of crankshaft parts failure. Traditional fatigue analysis is fairly complicated and causes a great error. The finite element model of s195 engine crankshaft is created under SolidWorks environment, whose static analysis and fatigue analysis is carried out by using Simulation module. Also the vibration character of the crankshaft is calculated through modal analysis. Result shows the fatigue strength of the crankshaft is enough and it will not produce resonance in operation.

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10

Shingo, Toshiya, Keiji Yanase, Hisao Matsunaga, and Masahiro Endo. "An Analysis of Fatigue Strength of Notched Components." Advanced Materials Research 275 (July 2011): 43–46. http://dx.doi.org/10.4028/www.scientific.net/amr.275.43.

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Geometrical discontinuities in the engineering components, such as holes, fillets, grooves, and keyways, are unavoidable in design. In essence, they act as a stress-raiser that causes the fatigue cracks. Accordingly, the geometrical discontinuities trigger a significant amount of reduction for the fatigue strength. It is well known that the fatigue limit of the notched components is governed by either the initiation or propagation of a small crack at the root of a notch. Since the elastoplastic behaviors and the crack closure effect should be properly taken into consideration, the behavior of such a small crack cannot be characterized solely by linear elastic fracture mechanics. To overcome the difficulty mentioned above, in this study, a novel method is proposed to investigate the notch effect by making use of the McEvily method, which has been widely used for the analysis of small fatigue crack growth. Further, to modify the McEvily method, the plastic zone size of a crack is calculated based on the Dugdale model to incorporate the effect of the plastic yielding near the crack tip. Finally, the predictive capability of the proposed method is demonstrated by comparing our theoretical predictions with the available experimental data.

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11

ELKHOLY, A. H., and H. S. ZIBDEH. "FRETTING FATIGUE STRENGTH ANALYSIS USING THEORY OF ELASTICITY." Transactions of the Canadian Society for Mechanical Engineering 14, no. 1-2 (March 1990): 9–15. http://dx.doi.org/10.1139/tcsme-1990-0002.

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12

Oehlers, D. J., A. Ghosh, and M. Wahab. "Residual Strength Approach to Fatigue Design and Analysis." Journal of Structural Engineering 121, no. 9 (September 1995): 1271–79. http://dx.doi.org/10.1061/(asce)0733-9445(1995)121:9(1271).

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13

Wang, Yan Xia, and Hui Gao. "Fatigue Strength& Analysis of Diesel Engine Piston on Finite Element Analysis." Advanced Materials Research 156-157 (October 2010): 1086–89. http://dx.doi.org/10.4028/www.scientific.net/amr.156-157.1086.

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In this work, the variational trend of the stresses for the diesel engine piston under the operation conditions is analyzed by using finite element method (FEM) and the fatigue strength of the diesel engine piston is evaluated. The muhiaxial stress was converted into the uniaxial stress with the maximum principal stress method, and the material curve is amended by Goodman’s amendment. Finally the fatigue life and the fatigue safety factor of the diesel engine piston is obtained, which provides a better reference for structural improvements and optimization for the design of the piston.

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14

Liu, Han Wu, Gui Bing Pu, Yun Hui Du, and Peng Zhang. "Finite Element Analysis of Static Strength and Fatigue Strength of Hydraulic Shield Support." Advanced Materials Research 332-334 (September 2011): 2161–65. http://dx.doi.org/10.4028/www.scientific.net/amr.332-334.2161.

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By using the geometry modeling software Pro/E, the three-dimensional model of hydraulic shield support has been built. Considering of the loading conditions and displacement constraints which the hydraulic shield support suffers from under the actual working conditions, the static strength and fatigue strength of the hydraulic shield support were analyzed by FEM when they were in two different typical working conditions of the support height, and the weakest part which was discovered in the analysis was improved in its structure. The study results showed that the designed hydraulic shield support could meet the requests of the static strength and fatigue strength. The column of the hydraulic shield support and the ear plate which locates in the connection area of the column and the push beam are the weakest parts. The counterforce given by the ground mainly focuses on the mid-back position of the hydraulic shield support, which meets the requirements of saving labor when they were removed. In the Finite Element Analysis when the reinforcement ribs were added to the ear plate, we found that the maximum equivalent stress is reduced by 150 MPa and the fatigue life coefficient is reduced markedly as well. The possibility of the fatigue breakage was decreased largely after the structure was modified and the service life of the hydraulic shield support was improved. These prove that the improvement of the hydraulic shield support structure is reasonable and feasible.

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15

Sun, Zhi Juan, and Jing Tao Dai. "Modal and Strength Analysis of Crankshaft in Piston Compressor." Advanced Materials Research 945-949 (June 2014): 676–79. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.676.

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For research on comprehensive performance of crankshaft in piston compressor, multi-body dynamics model was built to get mechanical boundary conditions of the crankshaft, and the fatigue strength was verified; Finite element model (FEM) of the crankshaft was established, and the 1st 6 modal of the crankshaft was obtained. The results showed that fatigue strength and dynamic characteristic of the crankshaft was qualified. Theoretical basis could be provided for optimize the crankshaft’s structure by fatigue strength and modal analysis.

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16

Wang, Liang Shen, Hong Tu Sun, Pin Wang, Jie Hou, and Zai Yu Xie. "Strength Analysis of Roller-Metallic Membrane Coupling." Applied Mechanics and Materials 268-270 (December 2012): 1225–30. http://dx.doi.org/10.4028/www.scientific.net/amm.268-270.1225.

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In order to solve the problems of common metallic membrane coupling which is easily damaged a large misalignment compensation coupling is designed. The coupling joins roller coupling with membrane coupling reasonably to ensure the coupling working well in large misalignment condition. Fatigue stress for common coupling and roller-metallic membrane coupling are analyzed by CosmosWorks software. The results show that the zone around bolt holes is easily damaged due to the high stress and lower safety factor. The design of roller-metallic membrane coupling reduces the high stress and lower safety factor zone to increase the anti-fatigue capability of the coupling.

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17

Buczkowski, Ryszard, and Bartłomiej Żyliński. "Finite Element Fatigue Analysis of Unsupported Crane." Polish Maritime Research 28, no. 1 (March 1, 2021): 127–35. http://dx.doi.org/10.2478/pomr-2021-0012.

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Abstract The presented strength and fatigue calculations refer to an unsupported deck crane and its three distinct parts: housing, jib and column. Static loads applied to the structure were due to the crane’s own weight and a maximum working load, corresponding to a maximum lifting capacity at a maximum outreach of the crane. The numerical analysis was aimed at determining the thickness of the skin plating of the column and the number, shape and distribution of stiffeners in the column, housing and jib, ensuring that the crane yields correct strength and fatigue parameters. During the process of designing marine structures, the standard numerical analysis is, in many cases, limited to calculations in the basic strength range. Even when using numerical methods of analysis, complex strength and fatigue calculations are often not performed. The modern numerical analysis chain for marine structures should concentrate not only on strength analysis, but should take a further step, which encompasses fatigue analysis. The article presents a new outlook on design methods, which should be the entry point to the design of marine structures. Based on the acquired number of cycles of fatigue life, it is possible to estimate, with a sufficient degree of accuracy, the practical service life of a structure. To solve the problem, the authors used the finite element analysis software ABAQUS supported by the fe-safe system.

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18

Zheng, Yu Qing, Zhen Lin Wang, He Ji Ke, and Bing Li. "The Engine Connecting Rod Strength Evaluation and Fatigue Analysis." Advanced Materials Research 549 (July 2012): 812–15. http://dx.doi.org/10.4028/www.scientific.net/amr.549.812.

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In this paper, all parts of the gasoline engine connecting rod were assembled and the stress analysis was executed in two working cases of the maximum explosion pressure and the maximum inertia force based on ABAQUS. According to the simulation results from two above working cases, the engine connecting rod strength was evaluated comprehensively, which could satisfy the rod design strength requirement. And meanwhile the high cycle fatigue analysis of the connecting rod was also completed in fatigue safe module. The fatigue simulation result showed that the safety factor was greater than the specified value and the connecting rod was reliable.

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19

Chen, Xiao Ping, and Ru Fu Hu. "Analysis of Surface Rolling Process Impact on Crankshaft Fatigue Strength." Advanced Materials Research 488-489 (March 2012): 236–40. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.236.

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In this paper, the fatigue comparative test includes two groups of crankshafts, one group with surface rolling process and the other not, has been finished. And the test results are analyzed. The parent standard deviation test shows that there is not effect of surface rolling process impact on the uniformity of crankshaft fatigue strength. But it is sure that there is the impact of surface rolling process impact on the average of crankshaft fatigue strength by the average maternal test. So the surface rolling process can be used to improve crankshaft fatigue strength.

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20

Gorash, Yevgen, and Donald MacKenzie. "On cyclic yield strength in definition of limits for characterisation of fatigue and creep behaviour." Open Engineering 7, no. 1 (June 23, 2017): 126–40. http://dx.doi.org/10.1515/eng-2017-0019.

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AbstractThis study proposes cyclic yield strength as a potential characteristic of safe design for structures operating under fatigue and creep conditions. Cyclic yield strength is defined on a cyclic stress-strain curve, while monotonic yield strength is defined on a monotonic curve. Both values of strengths are identified using a two-step procedure of the experimental stress-strain curves fitting with application of Ramberg-Osgood and Chaboche material models. A typical S-N curve in stress-life approach for fatigue analysis has a distinctive minimum stress lower bound, the fatigue endurance limit. Comparison of cyclic strength and fatigue limit reveals that they are approximately equal. Thus, safe fatigue design is guaranteed in the purely elastic domain defined by the cyclic yielding. A typical long-term strength curve in time-to-failure approach for creep analysis has two inflections corresponding to the cyclic and monotonic strengths. These inflections separate three domains on the long-term strength curve, which are characterised by different creep fracture modes and creep deformation mechanisms. Therefore, safe creep design is guaranteed in the linear creep domain with brittle failure mode defined by the cyclic yielding. These assumptions are confirmed using three structural steels for normal and high-temperature applications. The advantage of using cyclic yield strength for characterisation of fatigue and creep strength is a relatively quick experimental identification. The total duration of cyclic tests for a cyclic stress-strain curve identification is much less than the typical durations of fatigue and creep rupture tests at the stress levels around the cyclic yield strength.

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21

Somers, Marnick, Saosometh Chhith, Wim De Waele, and Reza Hojjati Talemi. "Fatigue fracture assessment of high strength steel using thermographic analysis." International Journal Sustainable Construction & Design 8, no. 1 (October 30, 2017): 8. http://dx.doi.org/10.21825/scad.v8i1.6812.

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Fatigue behaviour is most commonly evaluated in uni-axial cyclic stress tests using standardised dog-bone samples. When components are sharply bent into shape and subjected to cyclic loading, the fatigue damage will accumulate at the inside of the bend. This paper reports on an experimental investigation about the feasibility of infrared thermographic techniques to monitor fatigue damage initiation and accumulation. By monitoring spectral components of the thermal response, the fatigue limit, the onset of crack initiation and the ratio of initiation to propagation lifetime can all be determined. Also the effect of surface treatments on initiation properties is investigated. Most results are consistent with expected behaviour based on a previous study, indicating that thermographic techniques have a greater sensitivity and can be used to reduce the number of samples and time required for fatigue characterisation.

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22

Jayaprakash, M., Yoshiharu Mutoh, K. Asai, Kunihiro Ichikawa, and Shigeo Sakurai. "Mechanical Approach for Predicting Fretting Fatigue Strength." Key Engineering Materials 452-453 (November 2010): 797–800. http://dx.doi.org/10.4028/www.scientific.net/kem.452-453.797.

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Stress distribution at the contact edge is known to have a dominant influence on fretting fatigue strength. Stresses acting on the contact surface are tangential stress and compressive stress. In the present study, fretting fatigue strengths of 12 Cr steel specimen under two different mean stresses have been predicted based on the generalized tangential stress range - compressive stress range diagram. The generalized tangential stress range - compressive stress range diagram was obtained by carrying out fretting fatigue tests and finite element analysis using various steel specimens with various geometries of contact pad from the previous studies. The predicted fretting fatigue strengths were in good agreement with the experimental results.

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23

Chen, Xiao Ping, Ru Fu Hu, and Shu Hua Zheng. "Analysis of Crankshaft Fatigue Strength Based on Integrated Finite Element Model." Applied Mechanics and Materials 44-47 (December 2010): 1558–62. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.1558.

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Aiming at the complex mechanical systems for the prediction of the fatigue limit load requirements, this paper examines the relationship among finite element analysis model and the performance models. And a finite element modeling method for fatigue analysis is proposed. The finite element model can support static, modal, fatigue, and multi-body dynamic response analysis in parallel and collaboration. This method helps improve the fatigue limit load analysis.

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24

An, Qi, Hua Zhao, Peihai Li, and Maohai Fu. "Fatigue strength analysis of bogie frames under random loads." Advances in Mechanical Engineering 11, no. 9 (September 2019): 168781401987801. http://dx.doi.org/10.1177/1687814019878018.

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In this study, a method for analyzing the fatigue strength of a bogie frame under a random load was proposed. Based on the geometric features, a welded joint coordinate system was established to compute the stress components of each node in this coordinate system. With the influence of small amplitude cycles included, based on the corrected S–N curve and a method for calculating the equivalent constant amplitude stress, the node and comprehensive degree of utilization were calculated based on the anti-fatigue design grade of welded joints to evaluate the fatigue strength of a structure under a given lifespan. The FKM and International Institute of Welding methods were used to evaluate the fatigue strength of typical welded joints of a bogie frame. The characteristics of the node degree of utilization under different analytical methods were compared, and the results showed that when the time histories of the three stress components of the nodes had significant non-proportional features, the FKM method obtained conservative results. When the time histories of the three stress components of the nodes were synchronized, the criterion value specified by the International Institute of Welding method was the main factor affecting the distribution characteristics of the node degree of utilization. The analysis based on the International Institute of Welding method can effectively balance the lightweight design and reliability of the structure.

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25

Gao, Feng, Dong Liang Liu, and Yan Chuang Ding. "Virtual Fatigue Experiment Analysis of Welded Bogie Frame." Applied Mechanics and Materials 271-272 (December 2012): 560–64. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.560.

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Fatigue failure easily occurs in the weld seam of bogie frame, fatigue life prediction is very important. Based on the UIC615-4 (Motive power units- Bogies and running gear-Bogie frame structure strength tests ) and IIW standard (Recommendations for fatigue design standard of welded joints and components-IIW document XIII-1965-03/ XV-1127-03), fatigue test process of bogie frame is simulated by means of finite element method. Using Miner cumulative damage theory, on the basis of IIW welded joints S-N data, fatigue life of the welded frame is predicted, and the virtual fatigue test of welded frame is completed. During the phase of product design, virtual fatigue test technology can be used to evaluate the fatigue strength, which can find the weak part and improve product design quality.

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26

Yu, Fang, Lie Ping Ye, and Zhi Jun Dong. "A Theoretical Study on the Cables Fatigue Life Quantitative Analysis Method of Cable Bridges." Applied Mechanics and Materials 501-504 (January 2014): 1214–20. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1214.

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Based on the theory of fatigue fracture of metals, quantitative analysis method was proposed for fatigue strength of cables of cable bridges and conclusions were reached through analysis of calculation formula: the analysis method of stress fatigue life was able to consider the section dimensions of the cables, plasticity of the material and stress ration caused by external loads and other factors which affect the fatigue life. This analysis theory was correct which took into consideration of relatively overall factors and was a better way to analyze the cable fatigue life. Meanwhile, the design of fatigue strength of bridge cables should adopt the theoretical fatigue limit represented by equivalent nominal stress amplitude as the design value of fatigue strength of cable. The theory represented by equivalent nominal stress amplitude considered the influence of stress ratio on fatigue life of cables caused by external loads. Compared with traditional method of fatigue strength estimate, with sufficient theory basis and overall consideration of factors, the results of this method were more reliable.

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27

Wang, Xuancang, Naren Fang, Hongyu Ye, and Jing Zhao. "Fatigue Damage Analysis of Cement-Stabilized Base under Construction Loading." Applied Sciences 8, no. 11 (November 16, 2018): 2263. http://dx.doi.org/10.3390/app8112263.

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Cement-stabilized macadam is commonly used in pavement base courses. The disadvantage of this material is that it easily cracks because construction vehicles cause irreversible fatigue damage to the pavement. Fatigue damage is caused by an insufficient number of maintenance days and overloading by construction vehicles. In order to analyze the influence of the number of maintenance days and overloading by construction vehicles, Miner theory and ABAQUS software were used, and an unconfined compressive strength test, an indirect tensile strength test, a bending tensile strength test, and a fatigue test were carried out simultaneously. The relationship between compressive strength and the splitting strength of water-stabilized macadam as well as compactness, water content, and temperature at different ages were determined. Fitting shows that the bottom tensile stress of the most disadvantageous layer increased with increasing subbase modulus, and its reduction rate increased slowly with the increasing of cement-stabilized macadam subbase thickness. The fatigue prediction equation for cement-stabilized macadam was obtained using bending tensile strength and fatigue tests. Subbase fatigue damage caused by different construction loads under different working conditions was calculated using Miner theory according to actual engineering data. Therefore, the number of pavement maintenance days should be increased. For harsh natural environments and strict time constraints, the design should increase the strength and thickness of the subbase material. When laying the base, overloaded vehicles should be limited, and the construction period of the loaded vehicles should be reduced to minimize road damage.

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28

Kirkegaard, P. H., I. Enevoldsen, J. D. So̸rensen, and R. Brincker. "Reliability Analysis of a Mono-Tower Platform." Journal of Offshore Mechanics and Arctic Engineering 112, no. 3 (August 1, 1990): 237–43. http://dx.doi.org/10.1115/1.2919862.

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In this paper, a reliability analysis of a Mono-tower platform is presented. The failure modes considered are yielding in the tube cross sections and fatigue failure in the butt welds. The fatigue failure mode is investigated with a fatigue model, where the fatigue strength is expressed through SN relations. In determining the cumulative fatigue damage, Palmgren-Miner’s rule is applied. Element reliability, as well as systems reliability, is estimated using first-order reliability methods (FORM). The sensitivity of the systems reliability to various parameters is investigated. It is shown that the fatigue limit state is a significant failure mode for the Mono-tower platform. Further, it is shown for the fatigue failure mode that the largest contributions to the overall uncertainty are due to the damping ratio, the inertia coefficient, the stress concentration factor, the model uncertainties, and the parameters describing the fatigue strength.

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29

Zhang, Peng, Bao Xu, Shi Zhou, and Le He. "Fatigue Strength Analysis on the Automobile Stabilizer Bar Based on ANSYS." Open Mechanical Engineering Journal 8, no. 1 (December 31, 2014): 619–23. http://dx.doi.org/10.2174/1874155x01408010619.

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Stabilizer bar is an important component of the vehicle’s independent suspension system and plays an important role in the safety traffic. Therefore, the research on fatigue strength characteristics of the automobile stabilizer bar is very important. In this paper, the finite element model is established for the automobile stabilizer bar by utilizing ANSYS finite element analysis software. The automobile stabilizer bar’s strength and stiffness are analyzed with the finite element method. It is ensured that the stabilizer bar meets the static strength requirements. At last, the fatigue simulation analysis is carried out. The simulation results illustrate that the fatigue life of the stabilizer bar is about 673400 times and that it meets the fatigue life requirements which must be at least 500000 times in the fatigue test of the stabilizer bar.

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30

Hu, Jian Jun, Hong Bin Xu, Shi Hua Zu, and Xiao Wang Gao. "Realization and Analysis of Bending Fatigue Strength Test for Gears under Random Loading." Advanced Materials Research 291-294 (July 2011): 1297–302. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.1297.

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For the bending fatigue under the random load condition, the Miner cumulative fatigue theory was analyzed qualitatively. Random amplitude fatigue load spectrum for experiments was compiled according to that gears work under the load with Gaussian distribution load spectrum. Gear bending fatigue was carried out by the method of group test under the conditions of random load on the electro-hydraulic servo testing machine. Then the P-S-N curve of bend fatigue was got under Gaussian distribution load spectrum with particular coefficient of variation. Experiments prove that fatigue life from the result of random luffing amplitude fatigue experiments is lower than that from constant amplitude fatigue experiments, in which the upper limit of fatigue loads is the mean of load spectrum. It will be not reliable to estimate the bending fatigue life of gears that in the actual service.

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31

Cheng, Ho-Chih, and Farn-Shiun Hwu. "Fatigue reliability analysis of composites based on residual strength." Advanced Composite Materials 15, no. 4 (January 2006): 385–402. http://dx.doi.org/10.1163/156855106778835212.

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32

Ping, Chen Xiao, Yu Xiao Li, Hu Ru Fu, and Li Jian Feng. "Analysis of Nitridation Time Impact on Crankshaft Fatigue Strength." Advanced Science Letters 5, no. 2 (February 1, 2012): 856–59. http://dx.doi.org/10.1166/asl.2012.1794.

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33

Mecséri, Balázs József, and Balázs Kövesdi. "09.09: Experimental fatigue analysis of high strength steel structures." ce/papers 1, no. 2-3 (September 2017): 2424–33. http://dx.doi.org/10.1002/cepa.290.

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Duan, Gang, and Hong Jie Yuan. "Fatigue Strength Analysis of the Actuator for the Steering Gear Based on DFR." Applied Mechanics and Materials 226-228 (November 2012): 850–54. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.850.

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In order to assess whether the durability of the designed product meets the requirements or not, the fatigue strength should be analyzed in product designing stage. With the help of ANSYS finite element analysis software, the detail fatigue rating (DFR) method and the linear cumulative damage theory are used to analyze the actuator from three aspects of the static strength, stiffness and fatigue strength. A Stiffness Model of the Actuator has been built in the static strength analysis. The paper also highlighted the theoretical derivation of the DFR and the application in the fatigue strength calculation of the actuator. In practical projects, this method can be applied to similar products, and it can be used as a verification method for design optimization.

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Domazet, Željko, Francisko Lukša, and Miro Bugarin. "Fatigue Strength of the Rolls with Grooves." Applied Mechanics and Materials 459 (October 2013): 330–34. http://dx.doi.org/10.4028/www.scientific.net/amm.459.330.

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In Steelworks Split failures of the rolls with grooves on the 3-high-roughing mill stand occurred four times. Detailed analysis of all the elements which influenced the failure was carried out. Stress analysis shownthatthe most critical area of the roll is the 7.a caliber what is corresponding with fracture positions. The fatigue strength of the material in the caliber groove for fatigue life prediction was missing and fatigue strength is determined by experimental testing.

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Kłysz, Sylwester, and Janusz Lisiecki. "Strength Testing and Analysis of Fatigue Crack Growth in Selected Aircraft Materials." Fatigue of Aircraft Structures 2009, no. 1 (July 26, 2009): 74–83. http://dx.doi.org/10.2478/v10164-010-0008-8.

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Strength Testing and Analysis of Fatigue Crack Growth in Selected Aircraft MaterialsThe study has been intended to determine the most essential mechanical and fatigue properties as well as impact strength of the 30HGSNA steel, to gain own data on the above-mentioned characteristics of materials to be used further on in numerical analyses of life estimates of aeronautical structural components. The scope of the study comprised the following assignments:- determination of the most fundamental mechanical properties and impact strength of materials- low-cycle fatigue testing and evaluation of the Manson-Coffin curves- high-cycle fatigue testing and evaluation of the Wöhler curves- investigation into fatigue crack growth rates at constant and variable load-cycle amplitudes (determination of curves da/dN = f(ΔK, R), coefficients in Paris and NASGRO equations, coefficients in the Wheeler models of delay, the value of Kth(R))- crack toughness testing under the plane-state-of-strain conditions at room temperature (determination of the KIc(R)).The strength/fatigue testing was carried out in the Laboratory for Materials Strength Testing of the AFIT's Division for Aeronautical Systems Reliability and Safety, the lab being accredited by the Polish Centre for Accreditation (Accreditation Certificate No.: AB 430).

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Franco, H. Alexander, Cosme Roberto Moreira Silva, J. L. A. Ferreira, and José A. Araújo. "Fatigue Strength of Ti-35Nb-7Zr-5Ta." Materials Science Forum 727-728 (August 2012): 73–79. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.73.

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Mean stress on fatigue strength of Ti-35Nb-7Zr-5Ta, used in the manufacture of orthopedic prostheses, was evaluates. Samples of Ti-35Nb-7Zr-5Ta were pressureless, sintered and tested using microhardness (Vickers) and four point bending fatigue conditions. Characterization was carried out using optical microscopy, scanning electron microscopy, EDS analysis, oxygen analysis and density. The microstructural analysis shows low densification after sintering (almost 86% of theoretical) and some precipitates of α phase and presumably ω phase at the grain and grain boundaries. The bending fatigue resistance limit reached (Se (106) = 90 MPa), due to, presumably, the influence of the medium-high porosity, α phase precipitates at grain boundaries as well as the high oxygen content in the material after sintering (0.96 %). In this case, Kwofie model best explains the influence of mean stress on fatigue strength of this alloy.

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Hongfei, Guo, Jianwei Yan, Ru Zhang, Zhihui He, Zengqi Zhao, Ting Qu, Ming Wan, Jingshun Liu, and Congdong Li. "Failure Analysis on 42CrMo Steel Bolt Fracture." Advances in Materials Science and Engineering 2019 (January 1, 2019): 1–8. http://dx.doi.org/10.1155/2019/2382759.

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Fracture behaviors of 42CrMo ultrahigh strength steel-based bolt have been experimentally studied including macroscopic and microscopic fracture observation, metallographic test, mechanical property testing, and energy spectrum analysis. The results show that a large amount of structure defects, such as sulfide inclusions, band, and carbon depletion, appear in the fracture origin region and matrix of the bolt. Such defects reduce fatigue strength of materials and easily yields fatigue fracture origin. In addition, sulfide inclusions provide easy access to crack growth, gradually reducing the effective cross section of the bolt accompanying with increasing stress and finally causes fracture when stress exceeds the material fracture strength. The fracture mechanism is also explored based on fracture failure criterion and fatigue crack growth curve.

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Hua, Bin Bin, Ji Sheng Ma, Da Lin Wu, and Jia Jun Yao. "Dynamic Strength and Fatigue Reliability Analysis of Breech Based on FEM." Applied Mechanics and Materials 184-185 (June 2012): 166–69. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.166.

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In the process of strength and fatigue reliability research of breech, finite element model of breech was established with the finite element software ABAQUS. Then the maximum stress of breech in the recoil process was obtained through FEM dynamic analysis, and the calculated results indicated that the breech strength design met the requirement. Take dynamic stress course as the load spectrum for fatigue life prediction of breech in fatigue analysis software. The study provides a useful reference for breech design and optimization.

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Park, Kwan Sik, Jae Hyuk So, Keun Yeong Oh, and Kang Min Lee. "Analysis Study on Axial Force in Bolted Connection under Fatigue Load." Applied Mechanics and Materials 858 (November 2016): 57–60. http://dx.doi.org/10.4028/www.scientific.net/amm.858.57.

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High-strength bolted connection is widely used for steel structure construction. Because high-strength bolted connection has simple constructability and structural qualification. Especially friction type with high-strength bolted connection has high stiffness and fatigue strength. At this time, initial clamping force is one of main factor to affect the strength and deformation behavior of connection. Therefore, the objective of this study is to investigate reduction of initial clamping force in high-strength bolted connection under fatigue load. And the parameter of this study is the size of the bolt and 3 types of initial clamping force. The analysis is used the finite element analysis program ANSYS Workbench.

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Shao, Chuang, Claude Bathias, Danièle Wagner, and Hua Tao. "Very High Cycle Fatigue Behavior and Thermographic Analysis of High Strength Steel." Advanced Materials Research 118-120 (June 2010): 948–51. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.948.

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Very high cycle fatigue behavior of high strength steel, were investigated using ultrasonic fatigue testing equipment at 20 kHz up to 109cycles. S-N curves at room temperature with different stress ratio (R=0.01 and R=0.1) was determined. The experimental results show that fatigue strength decrease with increasing number of cycles between 105 and 109. SEM examination of fracture surface reveals that fatigue damage was governed by the formation of cracks, and subsurface crack initiation was in the very long life range. The results shown that the portions of life attributed to subsurface crack initiation between 107 and 109 cycles are 99%.

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Liu, Na, Guo Xiang Li, Shuai Guo Lang, Yu Ping Hu, and Xiao Ri Liu. "Fatigue Strength Analysis of Internal Combustion Engine Crankshaft Based on Dynamic Simulation." Advanced Materials Research 442 (January 2012): 281–85. http://dx.doi.org/10.4028/www.scientific.net/amr.442.281.

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This paper established multi-body dynamic model of block-crankshaft system by method of finite element substructure and multi-body dynamics, and carried out the distribution of dynamic stress acting on the crankshaft in a working cycle and on this basis carried out the fatigue strength analysis, then received the fatigue safety coefficient and fatigue life data of each part of the crankshaft.

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Ali, M. A. N., R. A. Hussein, and H. A. Hussein. "Numerical Thermo-Mechanical Strength Analysis of an IC Engine Component." International Journal of Applied Mechanics and Engineering 26, no. 3 (August 26, 2021): 1–11. http://dx.doi.org/10.2478/ijame-2021-0031.

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Abstract This research investigates a thermo-mechanical strength of three geometrical shape designs of an internal combustion (IC) engine piston by a finite element analysis (FEA). FEA was performed using Solidworks software for modelling geometrical piston designs, and the models were imported into ANSYS software for thermo-mechanical fatigue simulation. The work focused on predicting high stress intensity and indicated the fatigue critical regions and life of the piston shape design. AL7075-T6 aluminium alloy was used as a piston material and thermo-mechanical fatigue simulation was conducted based on the experimental stress-number of cycles recorded data from literature. Analytical results showed the similarity of the critical failure positions to some real failures in the IC engine piston, and the shape design modification of the piston. Hence, this concept can be used to satisfy the IC engine design needs at low cost.

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NISHIKAWA, Izuru, Atsushi SUGETA, Toshinori YOKOMAKU, Hidetoshi NAKAYASU, and Tatsuo SAKAI. "Proposal of a New Analysis Model for Fatigue Data Based on Fatigue Strength Distribution." Proceedings of Conference of Kansai Branch 2000.75 (2000): _3–7_—_3–12_. http://dx.doi.org/10.1299/jsmekansai.2000.75._3-7_.

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Yuan, Yongliang. "Fatigue Analysis of Mobile Maintenance Platform Based on Ansys Workbench." MATEC Web of Conferences 175 (2018): 03048. http://dx.doi.org/10.1051/matecconf/201817503048.

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In order to investigate the performance of the mobile maintenance platform, Ansys Workbench was used to analyze the strength analysis of the mobile maintenance platform. The deformation, stress, and strain were obtained. The fatigue module was used to analyze the fatigue of the mobile maintenance platform and the fatigue life based on the cumulative fatigue damage theory. The simulation results show that the strength of the mobile maintenance platform is sufficient, and its lifetime is as high as 19.8 years. The mobile maintenance platform has a large space for optimization and this paper provides a basis for future structural optimization design.

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Perez Mora, Ruben, Gonzalo Domínguez Almaraz, Thierry Palin-Luc, Claude Bathias, and José Luis Arana. "Very High Cycle Fatigue Analysis of High Strength Steel with Corrosion Pitting." Key Engineering Materials 449 (September 2010): 104–13. http://dx.doi.org/10.4028/www.scientific.net/kem.449.104.

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This work deals with very high cycle fatigue tests on high strength steel subject to the corrosive action of salt solution. Tests were carried out at constant load ratio R = -1 on corrosion treated and non-treated specimens and sea water flow specimens of R5 steel, which according to an International Classification Society of offshore systems is steel graded with the highest ultimate tensile strength to manufacture mooring chains and accessories intended to position mooring applications such as mooring of mobile offshore units, mooring of floating production units and mooring of offshore loading systems. Fatigue endurance on pre-corroded specimens was quite dispersed but with a mean value of 360 MPa, whereas for the non corroded specimens the fatigue endurance was located between 420 MPa at 105 - 106 cycles, and 380 MPa at 109 cycles. Concerning the sea water flow specimens, important increase in fatigue life is observed in reducing the applied load. Dispersion on fatigue endurance for the pre-corroded and sea water flow specimens was related to the complex process of corrosion on the specimen surface; nevertheless, the resulting pitting holes were associated to fracture origin in these specimens. Furthermore, fatigue failure origin was systematically localized at a circular, elliptical or irregular surface pitting hole formed during the corrosion process; special attention was focused on the pitting holes related to fatigue failure. Finite element results were obtained for the hemispherical voids placed on the specimen surface in order to determine the corresponding stress concentration; these results were associated with the real fracture origin pitting holes observed on specimens with pre-corrosion and sea water flow corrosion. Finally, some conclusions were obtained concerning pitting holes, stress concentration and fatigue life for the pre-corroded and sea water flow corroded specimens.

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Wang, Xiao Wei, and Mao Xiang Lang. "Fatigue Strength Study on Radial Bogie Vice Frame Based on Finite Element Analysis." Applied Mechanics and Materials 723 (January 2015): 96–99. http://dx.doi.org/10.4028/www.scientific.net/amm.723.96.

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The vice frame bears and transfers the forces and loads between the bogie and the vehicle body.The strength of the vice frame relates directly to the stability and smoothness of the vehicle. In this study, finite element analysis is utilized first to analyse the structural strength and fatigue life of the vice frame, and the recognize the weak parts of its structure in order to enhance its structural strength in the following design work.The finite element analysis is performed on a simulation software Ansys. Then an experiment is designed to test the fatigue strength of the vice frame. The experimental result indicates that the fatigue strength of the object corresponds to the standards and the finite element analysis has high feasibility in solving this kind of problem.

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Kim, Chul Su, and Jung Kyu Kim. "Reliability Analysis of Steam Turbine Blade Using Monte Carlo Simulation." Key Engineering Materials 261-263 (April 2004): 549–54. http://dx.doi.org/10.4028/www.scientific.net/kem.261-263.549.

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In this study, the reliability analysis of the low pressure steam turbine blade was performed using the Monte Carlo simulation considering variations of applied stress and strength. Applied stress under the service condition of steady state was obtained by finite element analysis. The fatigue strength under rotating bending load was evaluated by the staircase method. The most appropriate probabilistic distribution of the fatigue strength is 3-parameter Weibull distribution, which is determined by the comparative analysis. The failure probability under various loading conditions was derived from the strength-stress interference model.

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Xiang, Hui Yu, Zhi Qiang Li, Chong Jie Leng, and De Mao Hu. "Fatigue Analysis of the Rotor Shaft on a High Speed Traction Motor." Advanced Materials Research 482-484 (February 2012): 722–25. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.722.

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Rotor shaft is an important part in the high speed traction motor. In the process of the motor running，some rotor shaft may show the symptoms of fatigue crack，fracture and other issues．Therefore，it is essential to analyze its fatigue condition for these potential problems in the product design stage．In this paper，finite element analysis software NX. Nastran is used to analyzing the rotor shaft of traction motor from structural strength，fatigue strength and fatigue life respectively．The fatigue damage area and dangerous zone of the rotor shaft as well as its fatigue life can be predicted according to the simulation results，and which could provide a critical review for the following study and structural design of the traction motor．

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Oyan, C. "Structural strength analysis of the bogie frame in Taipei rapid transit systems." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 212, no. 3 (May 1, 1998): 253–62. http://dx.doi.org/10.1243/0954409981530841.

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The importance of bogie fatigue in railway rolling stock has been recognized as a contributing factor in structural failure. A bogie frame designed for Taipei rapid transit systems is analysed in order to confirm the technical strength requirements for static and dynamic loadings. A numerical finite element analysis is utilized in view of the complex geometry, and detailed plots are also presented in this report to give a complete understanding of the behaviour of the bogie frame. The von Mises stresses are adopted as equivalent stresses in the static strength calculation while the principal stresses are adopted in fatigue strength evaluation. Material yield stress and modified Goodman diagrams showing the permissible stress ranges are used as failure criteria respectively for static and dynamic loadings. It is demonstrated that the static strength and fatigue strength of the bogie frame satisfy the strength requirements specified by Taipei rapid transit systems.

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