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Articoli di riviste sul tema "Multiaxial"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Kosaka, Rui, Fumio Ogawa, Takamoto Itoh, and Masao Sakane. "Creep Damage Evaluation using Uniaxial Miniature Specimens for Multiaxially Damaged Components." MATEC Web of Conferences 300 (2019): 07003. http://dx.doi.org/10.1051/matecconf/201930007003.

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Abstract (sommario):

This study discusses a method of evaluating multiaxial creep damage for high temperature components subjected to multiaxial creep damage utilizing a miniature creep testing. A new model of the damage evaluation is proposed based on a linear creep damage accumulation and von Mises equivalent stress being a measure of multiaxial creep damage. The model clearly indicates that conventional creep damage evaluation methods utilizing a unidirectional miniature creep testing give an unconservative estimate in some cases for multiaxially creep damaged components. To verify the appropriateness of the pr

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2

Wang, C. H., and M. W. Brown. "Life Prediction Techniques for Variable Amplitude Multiaxial Fatigue—Part 1: Theories." Journal of Engineering Materials and Technology 118, no. 3 (1996): 367–70. http://dx.doi.org/10.1115/1.2806821.

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Abstract (sommario):

Fatigue life prediction under multiaxis random loading is an extremely complex and intractable topic; only a few methods have been proposed in the literature. In addition, experimental results under multiaxis random loading are also scarce. In part one of this two-part paper, a multiaxial non-proportional cycle counting method and fatigue damage calculation procedure are proposed, which is compared with one published damage-searching method. Both theories are based on critical plane concepts, one being an extension of the local strain approach for uniaxial variable amplitude loading and the ot

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3

Ozdemir, Huseyin, and Kadir Bilisik. "Off-Axis Flexural Properties of Multiaxis 3D Basalt Fiber Preform/Cementitious Concretes: Experimental Study." Materials 14, no. 11 (2021): 2713. http://dx.doi.org/10.3390/ma14112713.

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Abstract (sommario):

Multiaxis three-dimensional (3D) continuous basalt fiber/cementitious concretes were manufactured. The novelty of the study was that the non-interlace preform structures were multiaxially created by placing all continious filamentary bundles in the in-plane direction of the preform via developed flat winding-molding method to improve the fracture toughness of the concrete composite. Principle and off-axis flexural properties of multiaxis three-dimensional (3D) continuous basalt fiber/cementitious concretes were experimentally studied. It was identified that the principle and off-axis flexural

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4

Lu, Fucong, Kun Zhang, Yuhang Hou, and Zhiwen Wu. "Investigation on Temperature-Dependent Multiaxial Ratchetting of Polycarbonate by a Novel Experimental Method." Advances in Materials Science and Engineering 2022 (May 13, 2022): 1–9. http://dx.doi.org/10.1155/2022/6577569.

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Abstract (sommario):

A novel method to heat the multiaxial hollow thin-wall specimen was proposed, where its gauge length section can be heated by the liquid (i.e., water) filled inside the specimen instead of the closed furnace. This method realizes the direct measurement of multiaxial strain on the surface of specimen at different temperatures by the noncontact digital image correlation. By utilizing the proposed method, the multiaxial stress-control cyclic tests were performed to investigate the multiaxial ratchetting of polycarbonate (PC) at different temperatures. It is found that the multiaxial ratchetting o

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5

Wang, Lei, Wu Zhen Li, and Tian Zhong Sui. "Review of Multiaxial Fatigue Life Prediction Technology under Complex Loading." Advanced Materials Research 118-120 (June 2010): 283–88. http://dx.doi.org/10.4028/www.scientific.net/amr.118-120.283.

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Abstract (sommario):

The research on multiaxial fatigue life prediction methods is reviewed in the present paper from two aspects of experiment and theory. It is pointed out that the reasonable methods of the critical plane determining, multiaxial cycle counting and multiaxial fatigue damage parameter fixing are necessary if the fatigue life prediction models established under the multiaxial constant amplitude loading were applied to the life prediction of the complex multiaxial load. The shortcomings of existing researches are discussed. In the aspect of experiment, it is devoid of the multiaxial fatigue test tha

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6

Shirafuji, Nakao, Kenji Shimomizuki, Masao Sakane, and Masateru Ohnami. "Tension-Torsion Multiaxial Low Cycle Fatigue of Mar-M247LC Directionally Solidified Superalloy at Elevated Temperature." Journal of Engineering Materials and Technology 120, no. 1 (1998): 57–63. http://dx.doi.org/10.1115/1.2806838.

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Abstract (sommario):

This paper studies the high temperature multiaxial low cycle fatigue of Mar-M247LC directionally solidified superalloy. Tension-torsion multiaxial low cycle fatigue tests were carried out using Mar-M247LC tubular specimens at 1173K in air. Several multiaxial strain and stress parameters were applied to the experimental data to examine the suitability of the parameters. All the multiaxial strain parameters proposed so far could not successfully correlate the multiaxial low cycle fatigue data of the directionally solidified superalloy, but the maximum principal stress and the equivalent stress b

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7

Bercelli, Lorenzo, Cédric Doudard, and Sylvain Moyne. "Taking into account the non-proportional loading effect on high cycle fatigue life predictions obtained by invariant-based approaches." MATEC Web of Conferences 300 (2019): 12003. http://dx.doi.org/10.1051/matecconf/201930012003.

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Abstract (sommario):

Industrial structures are often subjected to multiaxial fatigue loadings. If the multiple stress signals are not synced the loading is said to be non-proportional. Most of the multiaxial fatigue criteria give highly inaccurate lifetime predictions when used in the case of such loadings. The scalar equivalent stress defined by the criteria does not take into account the non-proportional nature of the multiaxial loading and leads to non-conservative predictions. Moreover a multiaxial fatigue criterion can only be applied on a stress cycle which has no clear definition when multiple unsynced sign

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8

Zhao, Er Nian, and Wei Lian Qu. "Multiaxial Fatigue Life Prediction of Metallic Materials Based on Critical Plane Method under Non-Proportional Loading." Key Engineering Materials 730 (February 2017): 516–20. http://dx.doi.org/10.4028/www.scientific.net/kem.730.516.

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Abstract (sommario):

The critical plane method is widely discussed because of its effectiveness for predicting the multiaxial fatigue life prediction of metallic materials under the non-proportional loading conditions. The aim of the present paper is to give a comparison of the applicability of the critical plane methods on multiaxial fatigue life prediction. A total of 205 multiaxial fatigue test data of nine kinds of metallic materials under various strain paths are adopted for the experimental verification. Results shows that the von Mises effective strain parameter and KBM critical plane parameter can give wel

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9

Stouffer, D. C., V. G. Ramaswamy, J. H. Laflen, R. H. Van Stone, and R. Williams. "A Constitutive Model for the Inelastic Multiaxial Response of Rene’ 80 at 871C and 982C." Journal of Engineering Materials and Technology 112, no. 2 (1990): 241–46. http://dx.doi.org/10.1115/1.2903315.

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Abstract (sommario):

This paper contains an extension of the uniaxial state variable constitutive model of Ramaswamy et al. (1988) to the case of multiaxial loading. The correlation between uniaxial and multiaxial loading conditions is achieved through the assumptions of material isotropy and conservation of inelastic volume. The multiaxial extension is based only on the material parameters evaluated from uniaxial loading. The research is accompanied by a multiaxial experimental program to evaluate the response of Rene’ 80 at 871°C and 982° C. Experiments in the program include torsion, proportional axial and tors

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10

Hiyoshi, Noritake, and Yoshihisa Iriyama. "Development of Tension-Torsion Multiaxial Creep Testing Apparatus for Heat Resisting Steel." MATEC Web of Conferences 159 (2018): 02015. http://dx.doi.org/10.1051/matecconf/201815902015.

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Abstract (sommario):

This paper describes development of a combined tensiontorsion multiaxial creep testing apparatus for heat resisting steel. It is essential for high temperature component designing to investigate creep rupture life and creep properties of heat resisting steel. Although high temperature structural components undergo multiaxial stress damage due to complex loading situation or shape discontinuity of the actual structure, there is no commercial testing apparatus which can conduct a creep testing under multiaxial stress conditions. In this study, we developed a combined tension-torsion multiaxial c

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11

Kang, Tae Jin, and Cheol Kim. "Mechanical and Impact Properties of Composite Laminates Reinforced with Kevlar Multiaxial Warp Knit Fabrics." Engineering Plastics 5, no. 4 (1997): 147823919700500. http://dx.doi.org/10.1177/147823919700500403.

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The mechanical and impact properties of multiaxial warp knit fabric reinforced composite laminates have been studied. Kevlar® fibre was used to fabricate the multiaxial warp knit structure for unidirectional reinforcing as well as stitching yarns. Tensile, flexural, short beam shear, and impact properties have been compared with those of woven laminated composites. The results showed that increased interlaminar shear strength is the main characteristic feature of the multiaxial warp knit composite compared with plain woven laminates. The interlaminar shear strength of multiaxial warp knit comp

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12

Kang, Tae Jin, and Cheol Kim. "Mechanical and Impact Properties of Composite Laminates Reinforced with Kevlar Multiaxial Warp Knit Fabrics." Polymers and Polymer Composites 5, no. 4 (1997): 265–72. http://dx.doi.org/10.1177/096739119700500403.

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Abstract (sommario):

The mechanical and impact properties of multiaxial warp knit fabric reinforced composite laminates have been studied. Kevlar® fibre was used to fabricate the multiaxial warp knit structure for unidirectional reinforcing as well as stitching yarns. Tensile, flexural, short beam shear, and impact properties have been compared with those of woven laminated composites. The results showed that increased interlaminar shear strength is the main characteristic feature of the multiaxial warp knit composite compared with plain woven laminates. The interlaminar shear strength of multiaxial warp knit comp

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13

Shang, De Guang, Guo Qin Sun, Jing Deng, and Chu Liang Yan. "Multiaxial Fatigue Damage Models." Key Engineering Materials 324-325 (November 2006): 747–50. http://dx.doi.org/10.4028/www.scientific.net/kem.324-325.747.

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Abstract (sommario):

Two multiaxial damage parameters are proposed in this paper. The proposed fatigue damage parameters do not include any weight constants, which can be used under either multiaxial proportional loading or non-proportional loading. On the basis of the research on the critical plane approach for the tension-torsion thin tubular multiaxial fatigue specimens, two multiaxial fatigue damage models are proposed by combining the maximum shear strain and the normal strain excursion between adjacent turning points of the maximum shear strain on the critical plane. The proposed multiaxial fatigue damage mo

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14

Poisson, J. L., S. Méo, F. Lacroix, G. Berton, and N. Ranganathan. "MULTIAXIAL FATIGUE CRITERIA APPLIED TO A POLYCHLOROPRENE RUBBER." Rubber Chemistry and Technology 85, no. 1 (2012): 80–91. http://dx.doi.org/10.5254/1.3672431.

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Abstract Due to their interesting mechanical behavior and their diversity, rubber materials are more and more used in industry. Indeed, formulating a multiaxial fatigue criterion to predict fatigue lives of rubber components constitutes an important objective to conceive rubber products. An experimental campaign is developed here to study the multiaxial fatigue behavior of polychloroprene rubber. To reproduce multiaxial solicitations, combined tension–torsion tests were carried out on a dumbbell-type specimen (an axisymmetric rubber part bonded to metal parts with a reduced section at mid-heig

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15

Lu, Chun, Jiliang Mo, Ruixue Sun, Yuanke Wu, and Zhiyong Fan. "Investigation into Multiaxial Character of Thermomechanical Fatigue Damage on High-Speed Railway Brake Disc." Vehicles 3, no. 2 (2021): 287–99. http://dx.doi.org/10.3390/vehicles3020018.

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The multiaxial character of high-speed railway brake disc thermomechanical fatigue damage is studied in this work. Although the amplitudes and distributions of temperature, strain and stress are similar with uniform and rotating loading methods, the multiaxial behavior and out-of-phase failure status can only be revealed by the latter one. With the help of a multiaxial fatigue model, fatigue damage evaluation and fatigue life prediction are implemented, the contribution of a uniaxial fatigue parameter, multiaxial fatigue parameter and out-of-phase failure parameter to the total damage is discu

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16

Wang, Yantian, Yuanying Qiu, Jing Li, and Jin Bai. "Two Fatigue Life Prediction Models Based on the Critical Plane Theory and Artificial Neural Networks." Metals 14, no. 8 (2024): 938. http://dx.doi.org/10.3390/met14080938.

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Abstract (sommario):

Since a multiaxial loading environment may lead to the fatigue failure of structures, establishing a reliable fatigue model to predict the multiaxial fatigue lives of structures has always been a concern of engineers. This study proposes a new multiaxial fatigue theoretical model (WYT model) based on the critical plane theory, which takes the plane of the maximum shear strain amplitude as the critical plane and considers the effects of shear stress and normal stress on fatigue damage. Moreover, a backpropagation neural network (BPNN) model for multiaxial fatigue life prediction with the shear

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17

Margetin, Matus, and Dominik Biro. "Performance of chosen multiaxial cycle counting method under non-proportional multiaxial variable loading." MATEC Web of Conferences 165 (2018): 16008. http://dx.doi.org/10.1051/matecconf/201816516008.

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Abstract (sommario):

One of the most crucial tasks in fatigue life-time estimation of components loaded with multiaxial variable amplitude loading is to correctly identify loading cycles that can be used with multiaxial damage criterions. During past years, several cycle counting methods have been proposed for multiaxial loading conditions. The aim of this text is the comparison of selected multiaxial cycle counting methods, namely Wang-Brown’s method, Modified Wang-Brown’s method, Bannantine-Socie’s method and then a critical analysis of the obtained results. For the comparison of chosen methods, a new data set,

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18

Gao, Ganggang, Jianhui Liu, Xuebin Lu, and Rong Zhang. "A damage-based method to predict crack initiation lifetime of high-strength steel under proportional bending-torsional loadings." Advances in Mechanical Engineering 14, no. 8 (2022): 168781322211184. http://dx.doi.org/10.1177/16878132221118479.

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The fatigue life of specimen consists of crack initiation and crack propagation life. As the fracture toughness of high strength steel is low, the specimen will fail soon once crack appears. Therefore, the crack initiation life of high strength steel is considered to be its whole life. Based on the evolution of material fatigue damage and the critical plane method commonly used in multiaxial fatigue strength theory, a crack initiation life prediction method for multiaxial specimens is proposed in this paper. Firstly, a uniaxial nonlinear fatigue damage evolution equation is proposed based on t

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19

Sidorina, A. I. "MULTIAXIAL CARBON FABRICS IN THE PRODUCTS OF AVIATION TECHNOLOGY (review)." Aviation Materials and Technologies, no. 3 (2021): 105–16. http://dx.doi.org/10.18577/2713-0193-2021-0-3-105-116.

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The article considers the main advantages and disadvantages of application of multiaxial fabrics as reinforcing fillers for composite materials with a polymer matrix, and specifies the most common processing technologies of multiaxial fabrics into a composite material. The paper provides the information about the use of carbon multiaxial fabrics in the manufacture of structures for aircraft products by the example of the production of the Airbus A380 rear bulkhead and of the Airbus A400M upper cargo door. Brief characteristics of the world’s leading manufacturers of carbon fiber multiaxial fab

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20

Wang, Lei, Tian Zhong Sui, and Qiu Cheng Tian. "Life Prediction and Verification under Multiaxial Fatigue Loading." Applied Mechanics and Materials 365-366 (August 2013): 991–94. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.991.

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The strain change characteristics of multiaxial fatigue are analyzed under the condition of the combined tension and torsion loading for thin-tube specimen. Based on the principle of multiaxial critical plane approach, a multiaxial fatigue damage parameter is established, which takes account of the effect of not only the maximum shear strain amplitude and normal strain amplitude on the critical plane but also the parameter of non-proportionality. The non-proportionality is the function of loading parameters which is closely contact with the strain change characteristics of multiaxial fatigue a

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21

Liu, Jianhui, Xin Lv, Yaobing Wei, Xuemei Pan, Yifan Jin, and Youliang Wang. "A novel model for low-cycle multiaxial fatigue life prediction based on the critical plane-damage parameter." Science Progress 103, no. 3 (2020): 003685042093622. http://dx.doi.org/10.1177/0036850420936220.

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Abstract (sommario):

Multiaxial fatigue of the components is a very complex behavior. This analyzes the multiaxial fatigue failure mechanism, reviews and compares the advantages and disadvantages of the classic model. The fatigue failure mechanism and fatigue life under multiaxial loading are derived through theoretical analysis and formulas, and finally verified with the results of multiaxial fatigue tests. The model of multiaxial fatigue life for low-cycle fatigue life prediction model not only improves the prediction accuracy of the classic model, but also considers the effects of non-proportional additional ha

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22

Margetin, Matus, and Dominik Biro. "Multiaxial cycle counting method for non-proportional multiaxial variable loading signals based on modified maximal shear stress." MATEC Web of Conferences 300 (2019): 17003. http://dx.doi.org/10.1051/matecconf/201930017003.

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Abstract (sommario):

One of the most challenging task in field of multiaxial fatigue is fatigue lifetime estimation of components loaded with multiaxial non-proportional variable amplitude loading. While this task consists of multiple smaller problems, one of the most crucial ones is loading cycles identification (and extraction) for future use with multiaxial damage criterions. By now, several cycle counting methods have been proposed for multiaxial loading conditions. The most wildly accepted methods are Bannantine-Socie’s method and Wang-Brown’s method (which has been later modified by Meggiolaro and Castro). T

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23

Amjadi, Mohammadreza, and Ali Fatemi. "Multiaxial Fatigue Behavior of High-Density Polyethylene (HDPE) Including Notch Effect: Experiments and Modeling." MATEC Web of Conferences 300 (2019): 05001. http://dx.doi.org/10.1051/matecconf/201930005001.

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High-Density Polyethylene (HDPE) is used in many industries with many applications from automotive industry to biomedical implants. It can be manufactured using different processing techniques including compression molding, injection molding, and blow molding. Multiaxial loading and non-proportionality between different loading sources are inevitable in many applications. It is shown that the common multiaxial fatigue criteria such as von Mises equivalent stress are not able to correlate the multiaxial fatigue data. In this study, multiaxial fatigue behavior of neat HDPE is investigated using

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24

Chen, Li, and Keqin Ding. "Research on multiaxial fatigue life prediction of lifting equipment based on symbol corrected equivalent stress spectrum." Journal of Physics: Conference Series 2808, no. 1 (2024): 012026. http://dx.doi.org/10.1088/1742-6596/2808/1/012026.

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Abstract During the cyclic operation of lifting equipment, critical structural fatigue damage and fracture failure often occur, causing huge economic losses and even leading to major accidents. In practical work, lifting equipment not only bears tensile and compressive loads but also significant shear loads. Under its actual working conditions, it causes multiaxial fatigue damage. This article studies the multiaxial load spectrum obtained by deploying fiber Bragg gratings strain rosette in high-risk and prone-to-cracking areas of lifting equipment and using a multiaxial stress equivalent metho

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Mezzich, J. E. "On Developing a Psychiatric Multiaxial Schema for ICD-10." British Journal of Psychiatry 152, S1 (1988): 38–43. http://dx.doi.org/10.1192/s0007125000295603.

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As work proceeds on the development of the Tenth Revision of the International Classification of Diseases (ICD-10) widespread interest has been expressed in the preparation of a multiaxial diagnostic schema for psychiatric patients. In consideration of this task, the present paper briefly notes pertinent international experience on multiaxial diagnosis, the discernible purposes of this approach, design requirements, and a specific multiaxial proposal.

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Li, Bochuan, Chao Jiang, Xu Han, and Yuan Li. "The prediction of multiaxial fatigue probabilistic stress–life curve by using fuzzy theory." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 31, no. 2 (2017): 199–206. http://dx.doi.org/10.1017/s0890060417000087.

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AbstractThe fuzziness of the traditional multiaxial fatigue prediction model is discussed and the fuzzy theory is applied into fatigue reliability analysis. The fuzzy linear regression analysis method is used to determine the fuzzy coefficients in the multiaxial stress–life equation under a small sample condition, and the corresponding multiaxial fatigue probabilistic stress–life curve is calculated with different confidence levels.

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Mao, Xue Ping, Yang Yu, Chao Li, Sai Dong Huang, Hong Xu, and Yong Zhong Ni. "Study on Creep Behaviors of T92 Steel under Multiaxial Stress State." Advanced Materials Research 860-863 (December 2013): 774–79. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.774.

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Creep tests for smooth specimens and notched specimens of T92 steel were carried out to study the effect of multiaxial stress state on creep rupture behaviors at 650°C. Creep rupture life was estimated by representative stress at multiaxial state of stress, the failure behavior of multiaxial creep was analyzed, and Kachanov creep damage formula was used to analyze the experimental data. The results show that the notch strengthens rupture life, multiaxial rupture behavior is controlled by mixed parameters, the creep ductility of the smooth and notched specimen decreases with rupture time, and d

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Wang, Lei, Tian Zhong Sui, Hang Zhao, and En Guo Men. "Probabilistic Model of the Multiaxial Low-Cycle Fatigue Life Prediction." Advanced Materials Research 479-481 (February 2012): 2135–40. http://dx.doi.org/10.4028/www.scientific.net/amr.479-481.2135.

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Abstract (sommario):

First, several widely used models of the multiaxial low-cycle fatigue life prediction based on the critical plane approach were presented in this paper, and the predicted results of these models for a medium carbon steel under the condition of multiaxial low-cycle fatigue loading were compared. Second, the stochastic expressions and probability density function curves of the fatigue performance parameters were obtained by probabilistic analysis of the medium carbon steel fatigue data. Finally, the probabilistic model of the multiaxial fatigue life prediction was simulated by Monte Carlo Method

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Machado, Pedro Vinícius Sousa, Lucas Carneiro Araújo, Marcos Venicius Soares, and José Alexander Araújo. "The use of a modified critical plane model to assess multiaxial fatigue of steels with nonmetallic inclusions." MATEC Web of Conferences 300 (2019): 16005. http://dx.doi.org/10.1051/matecconf/201930016005.

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The goal of this research is to investigate the detrimental effect of non-metallic inclusions on the fatigue strength of the AISI 4140 steel under multiaxial loading conditions. In order to do so, a multiaxial fatigue model based on the critical plane approach is coupled with Murakami’s √area model. The proposed adaptation is very easy to calibrate and can also account for the higher probability of existing a fatal small defect as the volume of stresses material increases. Experimental multiaxial fatigue data were generated and compared with the estimates provided by the adapted multiaxial fat

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Wu, Zhirong, Ying Pan, Hang Lei, Shuaiqiang Wang, and Lei Fang. "Fatigue Crack Growth Behavior and Failure Mechanism of Nickel-Based Alloy GH4169 under Biaxial Load Based on Fatigue Test of Cruciform Specimen." Metals 13, no. 3 (2023): 588. http://dx.doi.org/10.3390/met13030588.

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Due to the complex geometry and various cyclic loads, aeroengine components are often in a multiaxial complex stress state during service. Multiaxial fatigue is a major cause of many air accidents. It is of great significance to study the fatigue failure mechanism of aeronautical materials. This paper carries out biaxial fatigue tests on cruciform specimens and uses the surface replication method to record the initiation and propagation process of crack. Based on these fatigue tests, this paper studies the multiaxial fatigue characteristics of nickel-based alloy GH4169 for aeroengines and anal

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Kawai, M. "Anisotropic size effect law for notched strength of unidirectional carbon/epoxy laminates – Part 1: Formulation." Journal of Composite Materials 51, no. 5 (2016): 593–602. http://dx.doi.org/10.1177/0021998316651481.

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Abstract (sommario):

A multiaxial quasi-brittle failure criterion for notched orthotropic composites is developed with an emphasis on establishment of an analytical formula to predict their anisotropic notched strength for any notch size under any multiaxial proportional loading. It is formulated by replacing the principal unnotched strengths with the principal notched strengths in the framework of the Tsai–Hill static failure criterion for orthotropic composites. The effects of notch size and specimen width on the principal notched strengths are described by means of the Suo-Ho-Gong model that can consider notch

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Wang, Lei, Tian Zhong Sui, Yu Ma, and Yan Sun. "Determination of the Critical Plane under the Multiaxial Complex Loading." Advanced Materials Research 544 (June 2012): 182–87. http://dx.doi.org/10.4028/www.scientific.net/amr.544.182.

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Abstract (sommario):

Engineering components and structures in service are generally subjected to the multiaxial complex loads. The approach of critical plane has been widely accepted by most researchers as the best method in the multiaxial fatigue research field. It can be used well in the constant multiaxial fatigue loads, but not in the complex loads. Basis on analyzing characteristics of shear strain on material planes, the concept of weight-averaged maximum shear strain plane is proposed. A procedure is presented to determine the critical plane under multiaxial random loading. The angle values of the planes th

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Riess, Christian, Martin Obermayr, and Michael Vormwald. "The contrast of simplicity and accuracy in modeling multiaxial notch fatigue." MATEC Web of Conferences 300 (2019): 13003. http://dx.doi.org/10.1051/matecconf/201930013003.

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Abstract (sommario):

The fatigue assessment of notches under multiaxial and non-proportional service loading is challenging. Simple models (e.g. local strain approach based on normal stress and strain) are of poor quality for this general case of stress states and ductile material behavior. Advanced approaches show high accuracy, but require additional material testing and calibration. From an engineering point of view, deviations are tolerable to a certain extent. This contribution introduces two approaches for modeling multiaxial notch fatigue which are easy to apply. The first approach is an extension of the cl

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Li, Jiejie, Jie Li, Yangheng Chen, and Jian Chen. "Strengthening Modulus and Softening Strength of Nanoporous Gold in Multiaxial Tension: Insights from Molecular Dynamics." Nanomaterials 12, no. 24 (2022): 4381. http://dx.doi.org/10.3390/nano12244381.

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Abstract (sommario):

The functionalized applications of nanoporous metals place clear requirements on their basic mechanical properties, yet there is a lack of research on the mechanical response under multiaxial loading conditions. In this work, the mechanical behaviors of nanoporous gold under multiaxial tension are investigated via molecular dynamics simulations. The mechanical properties under different loading conditions are compared and the microstructure evolution is analyzed to clarify the deformation mechanisms of nanoporous gold in biaxial and triaxial tension. It is found that the modulus of nanoporous

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35

Li, Shan, and Yongxiang Zhao. "High-Cycle Fatigue Behavior of D2 Wheel Steel under Uniaxial and Multiaxial Loading Conditions for Potential Applications in the Railway Industry." Crystals 13, no. 7 (2023): 1146. http://dx.doi.org/10.3390/cryst13071146.

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Abstract (sommario):

This study investigates the fatigue damage evolution mechanisms of D2 wheel steel under high-cycle uniaxial and multiaxial loading conditions, with a focus on determining the fatigue crack growth threshold (FCGT). Uniaxial and multiaxial FCGT tests were performed on pre-cracked D2 wheel steel specimens subjected to high-frequency cyclic loading at stress ratios (R) of 0.1. The results indicate that the FCGT for D2 wheel steel under uniaxial loading conditions ranges between 8–9 MPa.m0.5, while under multiaxial loading conditions, it ranges between 6–9 MPa.m0.5. Scanning electron microscopy ana

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36

Wei, Haoyang, Jie Chen, Patricio Carrion, et al. "Multiaxial high-cycle fatigue modelling for random loading." MATEC Web of Conferences 300 (2019): 12005. http://dx.doi.org/10.1051/matecconf/201930012005.

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In this paper, a multiaxial fatigue life prediction model is proposed under general multiaxial random loadings. First, a brief review for existing multiaxial fatigue models is given and special focus is on the LiuMahadevan critical plane concept, which can be applied to both brittle and ductile materials. Next, new model development based on the Liu-Mahadevan critical plane concept for random loading is presented. The key concept is to use two-steps to identify the critical plane: identify the maximum damage plane due to normal stress and calculate the critical plane orientation with respect t

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37

Paradisi, Francesco, Anna Sofia Delussu, Stefano Brunelli, et al. "The Conventional Non-Articulated SACH or a Multiaxial Prosthetic Foot for Hypomobile Transtibial Amputees? A Clinical Comparison on Mobility, Balance, and Quality of Life." Scientific World Journal 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/261801.

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Abstract (sommario):

The effects of a non-articulated SACH and a multiaxial foot-ankle mechanism on the performance of low-activity users are of great interest for practitioners in amputee rehabilitation. The aim of this study is to compare these two prosthetic feet and assess possible improvements introduced by the increased degrees of freedom provided by the multiaxial foot. For this purpose, a group of 20 hypomobile transtibial amputees (TTAs) had their usual SACH replaced with a multiaxial foot. Participants’ functional mobility, involving ambulatory skills in overground level walking, ramps, and stairs, was e

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38

Williams, Janet B. W., Howard H. Goldman, Alan Gruenberg, Juan E. Mezzich, and Andrew E. Skodol. "The Multiaxial System." Psychiatric Services 41, no. 11 (1990): 1181–82. http://dx.doi.org/10.1176/ps.41.11.1181.

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39

Ahn, Byong‐Ho, Raymond Carroll, Kenneth Fertig, Michele S. Sapuppo, Howard L. Watson, and Marc S. Weinberg. "Multiaxial vibration sensor." Journal of the Acoustical Society of America 77, no. 5 (1985): 1978. http://dx.doi.org/10.1121/1.391785.

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40

Zheng, Shan Suo, Wen Yong Li, Qing Lin Tao, and Yu Fan. "A Multiaxial Damage Statistic Constitutive Model for Concrete." Applied Mechanics and Materials 166-169 (May 2012): 56–59. http://dx.doi.org/10.4028/www.scientific.net/amm.166-169.56.

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Abstract (sommario):

In order to apply the uniaxial damage evolution equation that established with the variable of strain to the multiaxial damage quantitative analysis, this paper bases on the Hsieh-Tang-Chen four-parameter failure criterion and adopts the way of making the triaxial equivalent strain combining with the uniaxial damage evolution equation to analyze and deduce the uniaxial damage evolution equation of SRHSHPC, and which is expanded to multiaxial condition as well. A function considered triaxial stress state and a related correction value are suggested, then, improving the damage evolution equation

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41

Wang, Xiao-Wei, De-Guang Shang, Yu-Juan Sun, and Xiao-Dong Liu. "Algorithms for multiaxial cycle counting method and fatigue life prediction based on the weight function critical plane under random loading." International Journal of Damage Mechanics 28, no. 9 (2019): 1367–92. http://dx.doi.org/10.1177/1056789519831051.

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Abstract (sommario):

Based on the critical plane determined by the weight function method, two algorithms for multiaxial cycle counting method are proposed by modifying the rainflow and range cycle counting methods. The proposed two algorithms can be applied to multiaxial random loading, and be suitable to any critical plane-based fatigue life prediction models, since the counted cycles or reversals are represented by the start time and end time. The proposed two algorithms are used to predict multiaxial fatigue life by the experimental data of 7075-T651 aluminum alloy, En15R steel and 7050-T7451 aluminum alloy co

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42

Yang, Xianjie, Yan Luo, and Qing Gao. "Constitutive Modeling on Time-Dependent Deformation Behavior of 96.5Sn-3.5Ag Solder Alloy Under Cyclic Multiaxial Straining." Journal of Electronic Packaging 129, no. 1 (2006): 41–47. http://dx.doi.org/10.1115/1.2429708.

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Abstract (sommario):

Based on the time dependent multiaxial deformation behavior of 96.5Sn-3.5Ag solder alloy, a constitutive model is proposed which considers the nonproportional multiaxial cyclic deformation properties. In the back stress evolution equations of this model, the nonproportionality which affects the back stress evolution rate is introduced. The approach for the determination of model parameters is proposed. The model is used to describe the time-dependent cyclic deformation behavior of 96.5Sn-3.5Ag solder alloy under cross, rectangular, rhombic, and double-triangular tensile–torsion multiaxial stra

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43

Papuga, Jan, Eva Cízová, and Aleksander Karolczuk. "Validating the Methods to Process the Stress Path in Multiaxial High-Cycle Fatigue Criteria." Materials 14, no. 1 (2021): 206. http://dx.doi.org/10.3390/ma14010206.

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Abstract (sommario):

The paper discusses one of the key features in the multiaxial fatigue strength evaluation—the procedure in which the stress path is analyzed to provide relevant measures of parameters required by multiaxial criteria. The selection of this procedure affects the complete equivalent stress derived for any multiaxial load combinations. Three major concepts—the minimum circumscribed circle, minimum circumscribed ellipse, and moment of inertia methods—are described. Analytical solutions of their evaluation for multiaxial stress state with components described by harmonic functions are provided. The

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44

Garcia, Martin, Claudio A. Pereira Baptista, and Alain Nussbaumer. "Multiaxial fatigue study on steel transversal attachments under constant amplitude proportional and non-proportional loadings." MATEC Web of Conferences 165 (2018): 16007. http://dx.doi.org/10.1051/matecconf/201816516007.

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Abstract (sommario):

In this study, the multiaxial fatigue strength of full-scale transversal attachment is assessed and compared to original experimental results and others found in the literature. Mild strength S235JR steel is used and an exploratory investigation on the use of high strength S690QL steel and the effect of non-proportional loading is presented. The study focuses on non-load carrying fillet welds as commonly used in bridge design and more generally between main girders and struts. The experimental program includes 33 uniaxial and multiaxial fatigue tests and was partially carried out on a new mult

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45

Hornberger, Troy A., Dustin D. Armstrong, Timothy J. Koh, Thomas J. Burkholder, and Karyn A. Esser. "Intracellular signaling specificity in response to uniaxial vs. multiaxial stretch: implications for mechanotransduction." American Journal of Physiology-Cell Physiology 288, no. 1 (2005): C185—C194. http://dx.doi.org/10.1152/ajpcell.00207.2004.

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Several lines of evidence suggest that muscle cells can distinguish between specific mechanical stimuli. To test this concept, we subjected C2C12 myotubes to cyclic uniaxial or multiaxial stretch. Both types of stretch induced an increase in extracellular signal-regulated kinase (ERK) and protein kinase B (PKB/Akt) phosphorylation, but only multiaxial stretch induced ribosomal S6 kinase (p70S6k) phosphorylation. Further results demonstrated that the signaling events specific to multiaxial stretch (p70S6k phosphorylation) were elicited by forces delivered through the elastic culture membrane an

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46

Yin, Xiang, De-Guang Shang, Gang Zhang, et al. "Thermal-mechanical fatigue life prediction considering fatigue-creep interaction effects." Journal of Physics: Conference Series 2569, no. 1 (2023): 012074. http://dx.doi.org/10.1088/1742-6596/2569/1/012074.

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Abstract (sommario):

Abstract This study proposed a multiaxial variable temperature and amplitude damage assessment model to predict the variable temperature and amplitude fatigue life of high-temperature alloys, which are often subjected to varying multiaxial mechanical and temperature loads. To validate the proposed model, seven variable temperature and amplitude fatigue tests were conducted on GH4169 nickel-based high-temperature alloy. The proposed model shows good accuracy and reliability in predicting the lifetime of high-temperature alloy components under multiaxial mechanical and temperature loads.

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47

Wang, Xiao-Ming, Hao Li, Zheng-Nan Yin, and Heng Xiao. "MULTIAXIAL STRAIN ENERGY FUNCTIONS OF RUBBERLIKE MATERIALS: AN EXPLICIT APPROACH BASED ON POLYNOMIAL INTERPOLATION." Rubber Chemistry and Technology 87, no. 1 (2014): 168–83. http://dx.doi.org/10.5254/rct.13.86960.

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ABSTRACT We propose an explicit approach to obtaining multiaxial strain energy functions for incompressible, isotropic rubberlike materials undergoing large deformations. Via polynomial interpolation, we first obtain two one-dimensional strain energy functions separately from uniaxial data and shear data, and then, from these two, we obtain a multiaxial strain energy function by means of direct procedures based on well-designed logarithmic invariants. This multiaxial strain energy function exactly fits any given data from four benchmark tests, including uniaxial and equibiaxial extension, simp

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48

Kallmeyer, Alan R., Ahmo Krgo, and Peter Kurath. "Evaluation of Multiaxial Fatigue Life Prediction Methodologies for Ti-6Al-4V." Journal of Engineering Materials and Technology 124, no. 2 (2002): 229–37. http://dx.doi.org/10.1115/1.1446075.

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Abstract (sommario):

Many critical engineering components are routinely subjected to cyclic multiaxial stress states, which may include non-proportional loading and multidimensional mean stresses. Existing multiaxial fatigue models are examined to determine their suitability at estimating fatigue damage in Ti-6Al-4V under complex, multiaxial loading, with an emphasis on long-life conditions. Both proportional and non-proportional strain-controlled tension/torsion experiments were conducted on solid specimens. Several multiaxial fatigue damage parameters are evaluated based on their ability to correlate the biaxial

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49

Hao, Meng-Fei, Shun-Peng Zhu, and Ding Liao. "New strain energy-based critical plane approach for multiaxial fatigue life prediction." Journal of Strain Analysis for Engineering Design 54, no. 5-6 (2019): 310–19. http://dx.doi.org/10.1177/0309324719873251.

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Abstract (sommario):

Based on critical plane approach, this article develops a new damage parameter through combing the equivalent strain energy aspect for multiaxial fatigue analysis, which includes no additional fitted parameters and overcomes the deficiency of using only equivalent stress/strain criterion separately under multiaxial loadings. Then, experimental data of GH4169, TC4, Al 7050-T7451 alloys under different loading conditions are applied for model validation and comparison with other four models. Results indicate that the proposed damage parameter yields better multiaxial fatigue life predictions tha

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50

Bayraktar, Harun H., Atul Gupta, Ron Y. Kwon, Panayiotis Papadopoulos, and Tony M. Keaveny. "The Modified Super-Ellipsoid Yield Criterion for Human Trabecular Bone." Journal of Biomechanical Engineering 126, no. 6 (2004): 677–84. http://dx.doi.org/10.1115/1.1763177.

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Abstract (sommario):

Despite the importance of multiaxial failure of trabecular bone in many biomechanical applications, to date no complete multiaxial failure criterion for human trabecular bone has been developed. By using experimentally validated nonlinear high-resolution, micro-mechanical finite-element models as a surrogate for multiaxial loading experiments, we determined the three-dimensional normal strain yield surface and all combinations of the two-dimensional normal-shear strain yield envelope. High-resolution finite-element models of three human femoral neck trabecular bone specimens obtained through m

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