Prediction of fatigue life in multibody systems considering the increase of dynamic loads due to wear in clearances

Ordiz, Manuel; Cuadrado, Javier; Cabello, M.; Retolaza, Iban; Martínez, F.; Dopico, Domingo Calvo

doi:10.1016/j.mechmachtheory.2021.104293

Cited by 23 publications

(8 citation statements)

References 39 publications

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“…where t m is the tangential unit vector of potential contact point m and rd m is the radius vector of potential contact points m. Spherical joint only appears point contact state, contact force and moment can be calculated through equations (12), (14), and (15). Detection of the instant of contact is correlated with the penetration depth of two discrete integration steps t n and t nþ1 .…”

Section: Calculation Of Contact Force For Clearances Jointsmentioning

confidence: 99%

“…It is worth mentioning that the above work takes into account different factors and provides ideas for establishing an accurate dynamic model with clearance joints. Different from the previous method, Ordiz et al 12 used Simscape to model the industrial press. Then, ANSYS was used for stress analysis to explore the impact of clearance evolution on service life of the machines.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

Jia

Chen

2021

International Journal of Advanced Robotic Systems

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For spatial multibody systems, the dynamic equations of multibody systems with compound clearance joints have a high level of nonlinearity. The coupling between different types of clearance joints may lead to abundant dynamic behavior. At present, the dynamic response analysis of the spatial parallel mechanism considering the three-dimensional (3D) compound clearance joint has not been reported. This work proposes a modeling method to investigate the influence of the 3D compound clearance joint on the dynamics characteristics of the spatial parallel mechanism. For this purpose, 3D kinematic models of spherical clearance joint and revolute joint with radial and axial clearances are derived. Contact force is described as normal contact and tangential friction and later introduced into the nonlinear dynamics model, which is established by the Lagrange multiplier technique and Jacobian of constraint matrix. The influences of compound clearance joint and initial misalignment of bearing axes on the system are analyzed. Furthermore, validation of dynamics model is evaluated by ADAMS and Newton–Euler method. This work provides an essential theoretical basis for studying the influences of 3D clearance joints on dynamic responses and nonlinear behavior of parallel mechanisms.

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Section: Calculation Of Contact Force For Clearances Jointsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

Jia

Chen

2021

International Journal of Advanced Robotic Systems

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“…1 To carry out durability development more efficiently and realize the modern design concept, relevant scholars have formulated some durability evaluation methods by integrating various disciplines in the CAE environment. Ordiz et al 2 and Chaves et al 3 used multi-body simulation (MBS) combined with the finite element method (FEM) to obtain the load spectrums of critical components. Subsequently, the quasi-static superposition method was used to calculate the components' fatigue damage using the equivalent stress histories of the critical points and the damage accumulation rule.…”

Section: Introductionmentioning

confidence: 99%

Accelerated durability evaluation of automotive components under multi-channel random loading

Zhou

2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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Accelerated durability evaluation aims to quantify the fatigue damage of automotive components in a shorter time. The quality of accelerated editing directly affects the evaluation’s efficiency and accuracy. In this paper, an index-controlled accelerated spectrum editing method is proposed, and the equivalent fatigue damage model of the component is derived. Taking an automotive steering knuckle as the verification object, the proposed accelerated editing method is evaluated from multiple perspectives. The evaluation results show that the proposed method has apparent advantages in compression efficiency, damage consistency, and retaining the frequency domain impact on the component.

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“…The wear in joints enlarges the clearance size. Ordiz [ 30 ] proposed a method to study the effect of joint clearances on the fatigue life of machines, in which the increase in dynamic loads due to wear in clearances was considered. Results showed that clearances may have a great impact in the service life of machines.…”

Section: Introductionmentioning

confidence: 99%

Study on Wear Characteristics of Revolute Clearance Joints in Mechanical Systems

2022

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The existence of clearance causes contact–impact forces in joints, which lead to surface wear and incessant material loss of the joint surface during the motion of mechanisms. In this work, the wear characteristics of dry revolute clearance joints in planar mechanisms are studied using a computational methodology. The normal contact force model and the tangential friction force model are established to describe the contact–impact in clearance joints. Then, the dynamic wear model based on the Archard’s wear model is established to predict the wear characteristics of clearance joints in mechanisms. The dynamic wear depths of clearance joints are obtained in two steps. The first step is the dynamics analysis of mechanisms to obtain the contact and sliding characteristics between the bearing and journal in the clearance joint. The second step is the dynamic wear depth analysis of clearance joints based on dynamic Archard’s wear model. Finally, a planar slider–crank mechanism with two revolute clearance joints between the connecting rod and its adjacent links is used as the implement example. Different case studies are performed to investigate the wear characteristics of clearance joints in mechanical systems.

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Prediction of fatigue life in multibody systems considering the increase of dynamic loads due to wear in clearances

Cited by 23 publications

References 39 publications

Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

Dynamic response analysis for multi-degrees-of-freedom parallel mechanisms with various types of three-dimensional clearance joints

Accelerated durability evaluation of automotive components under multi-channel random loading

Study on Wear Characteristics of Revolute Clearance Joints in Mechanical Systems

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