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Journal articles on the topic 'Stress Concentration Factors'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Honda, Takashi, Tetsuya Sasaki, Teruhito Ohtsuka, and Etsuji Yoshihisa. "OS03W0395 The effect of heat conduction on stress concentration factors and stress intensity factors determined by thermoelastic stress analyses." Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2003.2 (2003): _OS03W0395. http://dx.doi.org/10.1299/jsmeatem.2003.2._os03w0395.

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2

Segev, R. "Generalized Stress Concentration Factors." Mathematics and Mechanics of Solids 11, no. 5 (June 10, 2005): 479–93. http://dx.doi.org/10.1177/1081286505044131.

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3

Muminovic, Adis J., Isad Saric, and Nedzad Repcic. "Numerical Analysis of Stress Concentration Factors." Procedia Engineering 100 (2015): 707–13. http://dx.doi.org/10.1016/j.proeng.2015.01.423.

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4

Schindler, S., and J. L. Zeman. "Stress concentration factors of nozzle–sphere connections." International Journal of Pressure Vessels and Piping 80, no. 2 (February 2003): 87–95. http://dx.doi.org/10.1016/s0308-0161(03)00026-7.

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5

Xing Ji, Xi-Rui Liu, and Tsu-Wei Chou. "Dynamic Stress Concentration Factors in Unidirectional Composites." Journal of Composite Materials 19, no. 3 (May 1985): 269–75. http://dx.doi.org/10.1177/002199838501900305.

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6

Croccolo, D., and N. Vincenzi. "Stress concentration factors in compression—fit couplings." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 224, no. 6 (June 1, 2010): 1143–52. http://dx.doi.org/10.1243/09544062jmes1881.

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The aim of the present work is to define the maximum stress generated by the coupling of axially symmetric and continuous shafts press-fitted into axially symmetric hubs. The theoretical stresses given by the well-known formulae of the thick-walled cylinders theory are constant on the whole coupling surface, but if the shaft extends beyond the hub there is a stress concentration factor on the boundary zone. This occurrence is confirmed by finite element analyses performed by the authors on several different shaft—hub couplings. The analysed couplings have the shaft extended beyond the hub, the shafts press-fitted into the hubs, and both shafts and hubs loaded by an external pressure and an internal pressure. The stress concentration factors have been calculated in this work and their expressions have been derived as a function of some tensile and geometrical parameters. By combining the thick-walled cylinders theory with the proposed formulae, it is possible to evaluate the maximum stress located at the end of the hub without performing any numerical investigations.

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7

DURELLI, A. J., and E. ROJAS TOLEDO. "Stress-Concentration Factors as Function of Displacements." Experimental Techniques 9, no. 9 (September 1985): 25–30. http://dx.doi.org/10.1111/j.1747-1567.1985.tb02050.x.

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8

Chiang, Chun‐Ron. "On stress concentration factors in orthotropic materials." Journal of the Chinese Institute of Engineers 22, no. 3 (April 1999): 301–5. http://dx.doi.org/10.1080/02533839.1999.9670467.

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9

Grabias, M., and M. Chrzanowski. "Influence of damage on stress concentration factors." Materials Science 34, no. 5 (September 1998): 701–8. http://dx.doi.org/10.1007/bf02355789.

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10

Brown, K. N., J. H. Sims Williams, J. Devlukia, and C. A. McMahon. "Reasoning with geometry: Predicting stress concentration factors." Artificial Intelligence in Engineering 5, no. 4 (October 1990): 182–88. http://dx.doi.org/10.1016/0954-1810(90)90019-z.

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11

Hwu, Chyanbin, and Y. C. Liang. "Evaluation of stress concentration factors and stress intensity factors from remote boundary data." International Journal of Solids and Structures 37, no. 41 (October 2000): 5957–72. http://dx.doi.org/10.1016/s0020-7683(99)00245-0.

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12

KITSUNAI, Yoshio, Takashi HONDA, and Tetsuya SASAKI. "The Determination of Stress Concentration Factors and Stress Intensity Factors by Means of Thermoelastic Stress Analysis." Transactions of the Japan Society of Mechanical Engineers Series A 64, no. 627 (1998): 2782–87. http://dx.doi.org/10.1299/kikaia.64.2782.

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13

Lim, Teik Cheng. "Stress Concentration Factors in Auxetic Rods and Plates." Applied Mechanics and Materials 394 (September 2013): 134–39. http://dx.doi.org/10.4028/www.scientific.net/amm.394.134.

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Auxetic materials are solids that possess negative Poissons ratio. Although rare, such materials do occur naturally and also have been artificially produced. Due to their unique properties, auxetic materials have been extensively investigated for load bearing applications including in biomedical engineering and aircraft structures. This paper considers the effect of Poissons ratio on the stress concentration factors on rods with hyperbolic groove and large thin plates with circular holes and rigid inclusions. Results reveal that the use of auxetic materials is useful for reducing stress concentration in the maximum circumferential stress of the rods with grooves, and in plates with circular holes and rigid inclusions. However, the use of auxetic materials increases the stress concentration in the axial direction of the rod. Therefore a procedure to accurately select and/or design materials with precise negative Poissons ratio for optimal design is suggested for future work.

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14

Lotsberg, Inge. "Stress concentration factors at circumferential welds in tubulars." Marine Structures 11, no. 6 (July 1998): 207–30. http://dx.doi.org/10.1016/s0951-8339(98)00014-8.

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15

WATANABE, Tomonori, Takuma FUJIMOTO, and Tamotsu MAJIMA. "409 Elastic-plastic stress and strain concentration factors." Proceedings of Yamanashi District Conference 2000 (2000): 105–6. http://dx.doi.org/10.1299/jsmeyamanashi.2000.105.

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16

Lehnhoff, Terry F., and Bradley A. Bunyard. "Bolt Thread and Head Fillet Stress Concentration Factors." Journal of Pressure Vessel Technology 122, no. 2 (March 7, 2000): 180–85. http://dx.doi.org/10.1115/1.556168.

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Linear finite element analysis (FEA) was performed to determine stress concentration factors for the threads and the bolt head fillet in a bolted connection. The FEA models consisted of axisymmetric representations of a bolt and two circular steel plates each 20 mm in thickness. The bolts studied were 8, 12, 16, 20, and 24-mm-dia grade 10.9 metric bolts with the standard M thread profile. The threads were modeled at both the minimum and maximum allowable depths. The fillet between the bolt shank and bolt head connection was modeled at its minimum radius. Each bolt was loaded to its proof strength. A comparison is made to stress concentration factors typically used in bolted connection design. Stress concentration factors in the head fillet were 3.18, 3.23, 3.63, 3.58, and 3.90 for the 8, 12, 16, 20, and 24-mm bolts, respectively. Thread stress concentration factors were highest in the first engaged thread and decreased in each successive thread moving toward the end of the bolt. Stress concentration factors for the shallow thread models ranged from 1.17 to 4.33, 0.87 to 4.32, 0.83 to 4.67, 0.87 to 4.77, and 0.82 to 4.82 for the 8, 12, 16, 20, and 24-mm bolts, respectively. Likewise, stress concentration factors for the deep thread models ranged from 1.18 to 4.80, 0.88 to 4.80, 0.78 to 5.12, 0.83 to 5.17, and 0.82 to 5.22 for the 8, 12, 16, 20, and 24-mm bolts, respectively. [S0094-9930(00)01402-5]

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17

Kato, A., and T. Mizuno. "Stress concentration factors of grooved shafts in torsion." Journal of Strain Analysis for Engineering Design 20, no. 3 (July 1985): 173–77. http://dx.doi.org/10.1243/03093247v203173.

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18

Chiang, C. R. "Stress concentration factors of edge-notched orthotropic plates." Journal of Strain Analysis for Engineering Design 33, no. 5 (July 1, 1998): 395–98. http://dx.doi.org/10.1243/0309324981513093.

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For an edge-notched semi-infinite orthotropic plate, the stress concentration factor has been shown to be 1 + FmFs, where Fm and Fs are material factor and shape factor respectively. Since Fs is independent of material properties, a simple formula for Fs is proposed by interpolating two theoretical values of the isotropic material. The accuracy of the formula is assured by finding that its predictions are in excellent agreement with available solutions. An example of the computation of the stress concentration factors of edge-notched orthotropic plates is presented to illustrate its simplicity and accuracy.

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19

Boccaccini, A. R., G. Ondracek, and E. Mombello. "Determination of stress concentration factors in porous materials." Journal of Materials Science Letters 15, no. 6 (January 1996): 534–36. http://dx.doi.org/10.1007/bf00275423.

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20

Livieri, P., and G. Nicoletto. "Elastoplastic strain concentration factors in finite thickness plates." Journal of Strain Analysis for Engineering Design 38, no. 1 (January 1, 2003): 31–36. http://dx.doi.org/10.1243/030932403762671863.

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The paper presents a comparison of a detailed finite element modelling of elastoplastic strains at a notch root with experimental Moire interferometric data. The three-dimensional nature of the local constraint at a notch root for elastic or elastoplastic material behaviour is confirmed. The elastoplastic analysis shows that the stress concentration factor ratio from the mid-plane and the surface is practically insensitive to the actual σ—ε. relationship when the nominal stress achieves the yield stress.

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21

Ozkan, Murat Tolga, and Fulya Erdemir. "Determination of stress concentration factors for shafts under tension." Materials Testing 62, no. 4 (April 6, 2020): 413–21. http://dx.doi.org/10.3139/120.111500.

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22

Ermishkin, VA, S. P. Kulagin, N. A. Minina, and M. A. Pokrasin. "Determination of stress concentration factors from photometric analysis data." Journal of Physics: Conference Series 1347 (December 2019): 012108. http://dx.doi.org/10.1088/1742-6596/1347/1/012108.

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23

Rodriguez, J. E., F. P. Brennan, and W. D. Dover. "Minimization of stress concentration factors in fatigue crack repairs." International Journal of Fatigue 20, no. 10 (November 1998): 719–25. http://dx.doi.org/10.1016/s0142-1123(98)00039-5.

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24

Lake, H. E. R. "“Peterson's stress concentration factors” Second edition, by W.D. Pilkey." Strain 34, no. 2 (May 1998): 71. http://dx.doi.org/10.1111/j.1475-1305.1998.tb01083.x.

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25

CHIANG, CHUN-RON. "Stress concentration factors of a general triaxial ellipsoidal cavity." Fatigue & Fracture of Engineering Materials & Structures 31, no. 12 (December 2008): 1039–46. http://dx.doi.org/10.1111/j.1460-2695.2008.01294.x.

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26

HELLIER, A., M. CONNOLLY, and W. DOVER. "Stress concentration factors for tubular Y- and T-joints." International Journal of Fatigue 12, no. 1 (January 1990): 13–23. http://dx.doi.org/10.1016/0142-1123(90)90338-f.

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27

Biolzi, Luigi. "Stress concentration factors in axisymmetric solids under imposed deformations." Meccanica 22, no. 1 (March 1987): 19–26. http://dx.doi.org/10.1007/bf01560121.

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28

Segev, Reuven. "Generalized Stress Concentration Factors for Equilibrated Forces and Stresses." Journal of Elasticity 81, no. 3 (February 8, 2006): 293–315. http://dx.doi.org/10.1007/s10659-005-9017-1.

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29

Badr, Elie A. "Stress concentration factors for pressurized elliptic crossbores in blocks." International Journal of Pressure Vessels and Piping 83, no. 6 (June 2006): 442–46. http://dx.doi.org/10.1016/j.ijpvp.2006.01.003.

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30

Chen, Y. Z. "Evaluation of stress intensity factors from stress concentration factors for a crack embedded in dissimilar elliptic inclusion." Theoretical and Applied Fracture Mechanics 84 (August 2016): 177–82. http://dx.doi.org/10.1016/j.tafmec.2016.02.004.

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31

Quinn, S., and J. M. Dulieu-Barton. "Determination of Stress Concentration Factors for Holes in Cylinders Using Thermoelastic Stress Analysis." Strain 38, no. 3 (August 2002): 105–18. http://dx.doi.org/10.1046/j.0039-2103.2002.00012.x.

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32

de Oliveira Miranda, Antonio Carlos, Marcelo Avelar Antunes, Marco Vinicio Guamán Alarcón, Marco Antonio Meggiolaro, and Jaime Tupiassú Pinho de Castro. "Use of the stress gradient factor to estimate fatigue stress concentration factors K." Engineering Fracture Mechanics 206 (February 2019): 250–66. http://dx.doi.org/10.1016/j.engfracmech.2018.11.049.

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33

Srinivasan, Gowri, and Terry F. Lehnhoff. "Bolt Head Fillet Stress Concentration Factors in Cylindrical Pressure Vessels." Journal of Pressure Vessel Technology 123, no. 3 (April 20, 2001): 381–86. http://dx.doi.org/10.1115/1.1379530.

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Linear three-dimensional finite element analysis (FEA) was performed on bolted pressure vessel joints to determine maximum stresses and stress concentration factors in the bolt head fillet as a result of the prying action. The three-dimensional finite element models consisted of a segment of the flanges containing one bolt, using cyclic symmetry boundary conditions. The flanges were each 20 mm in thickness with 901.7 mm inner diameter. The outer flange diameter was varied from 1021 to 1041 mm in steps of 5 mm. The bolt circle diameter was varied from 960.2 to 980.2 mm in steps of 5 mm. The bolts used were 16-mm-dia metric bolts with standard head and nut thickness. The threads were not modeled. The internal vessel pressure was 0.6895 MPa (100 psi). Stress concentration factors in the bolt head fillet were calculated, and they ranged from 3.34 to 4.80. The maximum stress in the bolt as well as the stress concentration factors in the bolt head fillet increase with an increase in bolt circle diameter for a given outer flange dimension. Keeping the bolt circle diameter constant, bolt stress and stress concentration factors in the bolt head fillet decrease with increase in outer flange diameter. The maximum stresses in the bolt were also calculated according to the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code and the Verein Deutscher Ingenieur (VDI) guidelines and compared to the results observed through finite element analysis. The stresses obtained through FEA were larger than those predicted by the ASME and VDI methods by a factor that ranged between 2.96 to 3.41 (ASME) and 2.76 to 3.63 (VDI).

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34

Belashov, O., and J. K. Spelt. "Thermal stress concentration factors for defects in plated-through-vias." Microelectronics Reliability 48, no. 2 (February 2008): 225–44. http://dx.doi.org/10.1016/j.microrel.2007.04.012.

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35

Robinson, P. A., K. G. Swift, M. Raines, R. H. Graham, S. Peckover, and L. Gill. "An expert system for the determination of stress concentration factors." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 215, no. 4 (April 2001): 219–28. http://dx.doi.org/10.1243/0954410011533202.

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36

Muminovic, Adis J., Isad Saric, and Nedzad Repcic. "Analysis of Stress Concentration Factors Using Different Computer Software Solutions." Procedia Engineering 69 (2014): 609–15. http://dx.doi.org/10.1016/j.proeng.2014.03.033.

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37

Zheng, Jian, Shozo Nakamura, Yajing Ge, Kangming Chen, and Qingxiong Wu. "Extended Formulation of Stress Concentration Factors for CFST T-Joints." Journal of Bridge Engineering 25, no. 1 (January 2020): 06019006. http://dx.doi.org/10.1061/(asce)be.1943-5592.0001502.

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38

Patle, B. C. "Evaluation Of Stress Concentration Factors In Plate With Oblique Hole." IOSR Journal of Mechanical and Civil Engineering 2, no. 2 (2012): 28–32. http://dx.doi.org/10.9790/1684-0222832.

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39

Fröling, Maria, and Kent Persson. "Designing Bolt-Fixed Lamina ted Glass with Stress Concentration Factors." Structural Engineering International 23, no. 1 (February 2013): 55–60. http://dx.doi.org/10.2749/101686613x13363929988656.

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40

Fung, T. C., C. K. Soh, T. K. Chan, and Erni. "Stress Concentration Factors of Doubler Plate Reinforced Tubular T Joints." Journal of Structural Engineering 128, no. 11 (November 2002): 1399–412. http://dx.doi.org/10.1061/(asce)0733-9445(2002)128:11(1399).

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41

Yao, Zhan, and Zheng-Ming Huang. "Stress concentration factors in the matrix with different imperfect interfaces." International Journal of Damage Mechanics 23, no. 6 (November 14, 2013): 745–71. http://dx.doi.org/10.1177/1056789513512345.

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42

Fang, N., D. Pugh, and R. Themudo. "On the Stress Concentration Factors of Rolling Element Bearing Cages." Tribology Transactions 50, no. 4 (October 23, 2007): 445–52. http://dx.doi.org/10.1080/10402000701563002.

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43

Soh, A. K., and C. K. Soh. "Stress Concentration Factors of DK Square-to-Square Tubular Joints." Journal of Offshore Mechanics and Arctic Engineering 117, no. 4 (November 1, 1995): 265–75. http://dx.doi.org/10.1115/1.2827233.

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The fatigue life of tubular joints with many braces, e.g., DK and DTK joints, are commonly determined by treating them as tubular joints with less braces, e.g., T/Y, K, and X joints, based on the joint classification approach recommended by the American Petroleum Institute. The DK square-to-square tubular joint type was selected to verify the reliability and accuracy of such an approach. A parametric stress analysis of DK square-to-square tubular joints subjected to axial loads, in-plane and out-of-plane bending moments has been performed using the finite element technique. The results of this analysis are presented as a set of formulas expressing the stress concentration factor as a function of the relevant geometric parameters for various loading conditions. A comparison is made between the results obtained for DK square-to-square tubular joints and those obtained for X and K square-to-square tubular joints, which are commonly employed to simulate the former when the joint classification approach is adopted. In general, the stress concentration factors for DK joints are significantly higher, which shows that the recommended approach may not be reliable and accurate in dealing with DK joints.

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44

Fukuda, Hiroshi. "Stress concentration factors in unidirectional composites with random fiber spacing." Composites Science and Technology 22, no. 2 (January 1985): 153–63. http://dx.doi.org/10.1016/0266-3538(85)90082-x.

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45

Panagiotopoulos, G. D. "Stress concentration factors for intersecting cylindrical shells under mechanical loading." International Journal of Pressure Vessels and Piping 33, no. 5 (January 1988): 359–72. http://dx.doi.org/10.1016/0308-0161(88)90120-2.

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46

HUYNH, J., L. MOLENT, and S. BARTER. "Experimentally derived crack growth models for different stress concentration factors." International Journal of Fatigue 30, no. 10-11 (October 2008): 1766–86. http://dx.doi.org/10.1016/j.ijfatigue.2008.02.008.

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47

Sadat Hosseini, Alireza, Esmaeil Zavvar, and Hamid Ahmadi. "Stress concentration factors in FRP-strengthened steel tubular KT-joints." Applied Ocean Research 108 (March 2021): 102525. http://dx.doi.org/10.1016/j.apor.2021.102525.

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48

Jiang, Lei, Yongjian Liu, Jiang Liu, and Bin Liu. "Experimental and numerical analysis of the stress concentration factor for concrete-filled square hollow section Y-joints." Advances in Structural Engineering 23, no. 5 (November 10, 2019): 869–83. http://dx.doi.org/10.1177/1369433219884462.

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Previous studies have shown that the stress concentration factors for 90° square hollow section T- and X-joints can be significantly reduced by filling the chord with concrete and stiffening the chord with perfobond ribs. The current study examined stress concentration factors for non-90° (Y-type) joints. A total of 11 Y-joints were tested under axial tension, and the hot spot stresses were measured. The measured results were employed to evaluate the influence of design parameters on the stress concentrations. In addition, the measured results were used to evaluate finite element models. A parametric study was then undertaken using the finite element models to generate an extensive database of stress concentration factors and to develop parametric design equations to estimate the maximum stress concentration factors on the brace and the chord of concrete-filled square hollow section Y-joints with perfobond ribs. It was found that decreases of 13.7%–59.9% in the stress concentration factors occurred in concrete-filled square hollow section Y-joints stiffened by perfobond ribs relative to conventional square hollow section joints for different loading cases.

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49

Tipton, S. M., J. R. Sorem, and R. D. Rolovic. "Updated Stress Concentration Factors for Filleted Shafts in Bending and Tension." Journal of Mechanical Design 118, no. 3 (September 1, 1996): 321–27. http://dx.doi.org/10.1115/1.2826887.

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Published elastic stress concentration factors are shown to underestimate stresses in the root of a shoulder filleted shaft in bending by as much as 21 percent, and in tension by as much as forty percent. For this geometry, published charts represent only approximated stress concentration factor values, based on known solutions for similar geometries. In this study, detailed finite element analyses were performed over a wide range of filleted shaft geometries to define three useful relations for bending and tension loading: (1) revised elastic stress concentration factors, (2) revised elastic von Mises equivalent stress concentration factors and (3) the maximum stress location in the fillet. Updated results are presented in the familiar graphical form and empirical relations are fit through the curves which are suitable for use in numerical design algorithms. It is demonstrated that the first two relations reveal the full multiaxial elastic state of stress and strain at the maximum stress location. Understanding the influence of geometry on the maximum stress location can be helpful for experimental strain determination or monitoring fatigue crack nucleation. The finite element results are validated against values published in the literature for several geometries and with limited experimental data.

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50

Degroote, Cathy, Adrian Schwaninger, Nadja Heimgartner, Patrik Hedinger, Ulrike Ehlert, and Petra H. Wirtz. "Acute Stress Improves Concentration Performance." Experimental Psychology 67, no. 2 (March 2020): 88–98. http://dx.doi.org/10.1027/1618-3169/a000481.

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Abstract. Acute stress can have both detrimental and beneficial effects on cognitive processing, but effects on concentration performance remain unclear. Here, we investigate the effects of acute psychosocial stress on concentration performance and possible underlying physiological and psychological mechanisms. The study sample comprised 47 healthy male participants who were randomly assigned either to a psychosocial stress situation (Trier Social Stress Test) or a neutral control task. Concentration performance was assessed using the d2 Test of Attention before and 30 min after the stress or control task. Salivary cortisol and alpha-amylase were repeatedly measured before and up to 1 hr after stress. We repeatedly assessed state anxiety using the State-Trait Anxiety Inventory and anticipatory cognitive stress appraisal using the Primary Appraisal Secondary Appraisal questionnaire. The stress group showed a significantly stronger improvement of concentration performance compared to the control group ( p = .042). Concentration performance improvement was predicted by increased state anxiety ( p = .020) and lower cortisol (stress) changes ( p = .043). Neither changes in alpha-amylase nor cognitive stress appraisal did relate to concentration performance. Our results show improved concentration performance after acute psychosocial stress induction that was predicted by higher state anxiety increases and lower cortisol increases. This points to a potential modulating role of specific psycho-emotional and physiological factors with opposite effects.

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