Mixed uncertainty analysis for dynamic reliability of mechanical structures considering residual strength

Liu, Xintian; Yu, Xiaoxiao; Tong, Jiachi; Wang, Xu; Wang, Xiaolan

doi:10.1016/j.ress.2021.107472

Cited by 31 publications

(25 citation statements)

References 30 publications

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“…The stiffness degradation of fiber reinforced polymer (FRP) has a major impact on its fatigue life and reliability (Gao and Yuan, 2020; Gao et al. , 2021a; Liu et al. , 2021d; Zhu et al.…”

Section: Nonmetallic Materials Under Impact Loadsmentioning

confidence: 99%

Evaluation and prediction of material fatigue characteristics under impact loads: review and prospects

Liu

et al. 2022

IJSI

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PurposeThe properties of materials under impact load are introduced in terms of metal, nonmetallic materials and composite materials. And the application of impact load research in biological fields is also mentioned. The current hot research topics and achievements in this field are summarized. In addition, some problems in theoretical modeling and testing of the mechanical properties of materials are discussed.Design/methodology/approachThe situation of materials under impact load is of great significance to show the mechanical performance. The performance of various materials under impact load is different, and there are many research methods. It is affected by some kinds of factors, such as the temperature, the gap and the speed of load.FindingsThe research on mechanical properties of materials under impact load has the characteristics as fellow. It is difficult to build the theoretical model, verify by experiment and analyze the data accumulation.Originality/valueThis review provides a reference for further study of material properties.

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“…The stiffness degradation of fiber reinforced polymer (FRP) has a major impact on its fatigue life and reliability (Gao and Yuan, 2020; Gao et al. , 2021a; Liu et al. , 2021d; Zhu et al.…”

Section: Nonmetallic Materials Under Impact Loadsmentioning

confidence: 99%

Evaluation and prediction of material fatigue characteristics under impact loads: review and prospects

Liu

et al. 2022

IJSI

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“…, 2015; Liu et al. , 2021, 2022c). But most non-proportional loading path data points in Case 1∼Case 12 are located below the strain-life curve, indicating that the equivalent strain proposed by Itoh for life prediction will yield dangerous results.…”

Section: The Loading Pathmentioning

confidence: 99%

“…As shown in Figure 4, the predicted values of the equivalent effect variation do not differ much from the experimentally obtained values of the equivalent effect variation. So, we can use the predicted equivalent effect variation values to predict the fatigue life values (Liu et al, 2021(Liu et al, , 2022cZhang et al, 2019) (see Table 4).…”

Section: Test Data Validationmentioning

confidence: 99%

Multiaxial fatigue life prediction for metallic materials considering loading path and additional hardening effect

Liu

2022

IJSI

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PurposeA large number of data have proved that under the same von Mises equivalent strain condition, the fatigue life under multiaxial non-proportional loading is often much lower than the life under multiaxial proportional loading. This is mainly due to the influence of the non-proportional loading path and the additional hardening effect, which lead to a sharp decrease in life.Design/methodology/approachThe modulus attenuation effect is used to modify the static hardening coefficient, and the predicted value obtained is closer to the additional hardening coefficient obtained from the experiment. A fatigue life model can consider non-proportional paths, and additional hardening effects are proposed. And the model uses multiaxial fatigue test data to verify the validity and adaptability of the new model. The life prediction accuracy and material application range are satisfactory.FindingsBecause loading path and additional hardening of the material affect fatigue life, a new multiaxis fatigue life model based on the critical plane approach is proposed. And introducing a non-proportional additional damage coefficient, the joint influence of the load path and the additional hardening can be considered. The model's life prediction accuracy and material applicability were verified with multiaxial fatigue test data of eight materials and nine loads compared with the prediction accuracy of the Kandil–Brown–Miller (KBM) model and Fatemi–Socie (FS) model.Originality/valueThe physical meaning of the new model is clear, convenient for practical engineering applications.

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“…3,4 The wheel hub motordriven electric vehicle has larger utilization space, more reasonable equipment distribution, omitting part of the transmission device, higher efficiency, and full energy utilization after simplification. 5 It can realize multiple braking modes, and the lost energy is easy to be recycled, thus improving the economic type, good acceleration performance, and more flexible steering. 6,7 However, the new driving form and special structure layout aggravate vehicle vertical vibration, which makes ride comfort and handling stability worse.…”

Section: Introductionmentioning

confidence: 99%

Improved LQG vibration control for multiple inputs of electric vehicle

Zhang

et al. 2022

Advances in Mechanical Engineering

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To improve the ride comfort of electric vehicle, the vertical dynamic model of electric vehicle is established under the excitation of road surface and wheel hub motor. The road excitation is divided into random continuous road and convex road, and the influence of motor electromagnetic excitation on vibration is analyzed. To avoid the empirical value influence of each index weight coefficient on the main vibration control, the weight coefficient is determined by analytic hierarchy process (AHP), the LQG controller of vehicle active suspension is designed by using optimal control theory, and the comprehensive optimization of performance index is realized. The effectiveness of control effect is verified by comparing active and passive control based on single and double excitation.

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Mixed uncertainty analysis for dynamic reliability of mechanical structures considering residual strength

Cited by 31 publications

References 30 publications

Evaluation and prediction of material fatigue characteristics under impact loads: review and prospects

Evaluation and prediction of material fatigue characteristics under impact loads: review and prospects

Multiaxial fatigue life prediction for metallic materials considering loading path and additional hardening effect

Improved LQG vibration control for multiple inputs of electric vehicle

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