A continuous force model for the impact analysis of flexible multibody systems

Khulief, Y. A.; Shabana, Ahmed A.

doi:10.1016/0094-114x(87)90004-8

Cited by 164 publications

(73 citation statements)

References 15 publications

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“…An alternative contact force approach that accounts for the energy loss during the contact process is the Kelvin-Voigt model. This force model considers a linear spring in conjunction with a linear damper and can be expressed as [46] …”

Section: General Issues Of Continuous Contact Force Modelsmentioning

confidence: 99%

On the continuous contact force models for soft materials in multibody dynamics

et al. 2010

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Section: General Issues Of Continuous Contact Force Modelsmentioning

confidence: 99%

On the continuous contact force models for soft materials in multibody dynamics

et al. 2010

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“…In these approaches, the magnitudes of contact parameters are computed based on the penetration, material properties, surface geometries of the colliding bodies, and etc., see e.g. [3,4,5]. However, such methodologies are basically derived for contacting objects with simple geometries.…”

Section: Statement Of the Problemmentioning

confidence: 99%

“…Among analytical approaches, in [4] the required parameters for representing contact force laws are obtained based on the energy balance during contact. This formulation uses a force-displacement law that involves determination of material stiffness and damping coefficients.…”

Section: Literature Reviewmentioning

confidence: 99%

Identification of Compliant Contact Force Parameters in Multibody Systems Based on the Neural Network Approach Related to Municipal Property Damages

Lari¹,

Ebrahimi²

2017

AJNNA

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Abstract:In this paper, a new approach for identification of the compliant contact parameters model in multibody systems simulation using a neural network algorithm is presented. Based on the training and testing the network for some input and output data sets, a general framework is established for identification of these parameters. For this purpose, first, the literature devoted to the identification of contact parameters using analytical approaches and methods based on the neural network is reviewed in brief. Next, the proposed approach is outlined. Finally, considering a classical example of contact of two bodies, the proposed approach is applied for verification of the obtained results.

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“…These efforts can roughly be classified in two big categories. In the first one, the emphasis is put on considering dynamical systems with relatively simple sets of unilateral constraints and the main objective is to develop a better understanding on fundamental issues related to the dynamic response, stability and bifurcation of non-smooth systems (e.g., [5][6][7][8][9][10][11][12][13][14][15]). On the other hand, a parallel and equally intensive effort is also underway, where the attention is focused on developing accurate and efficient numerical methodologies for capturing the response of models involving more complex sets of multiple unilateral constraints, by employing set-valued force law theory (e.g., [16][17][18][19][20][21][22][23]).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of finite element structural models with multiple unilateral constraints

Theodosiou¹,

Natsiavas²

2009

International Journal of Non-Linear Mechanics

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Fast and accurate simulation of mechanical structures with complex geometry requires application of the finite element method. Τhis leads frequently to models with a relatively large number of degrees of freedom, which may also possess nonlinear properties. Things become more complicated for systems involving unilateral contact and friction. In classical structural dynamics approaches, such constraints are usually modeled by special contact elements. The characteristics of these elements must be selected in a delicate way, but even so the success of these methods can not be guaranteed. This study presents a numerical methodology, which is suitable for determining dynamic response of large scale finite element models of mechanical systems with multiple unilateral constraints. The method developed is based on a proper combination of results from two classes of direct integration methodologies. The first one includes standard methods employed in determining dynamic response of structural models possessing smooth nonlinearities. The second class of methods includes specialized methodologies that simulate response of dynamical systems with unilateral constraints. The validity and effectiveness of the methodology developed is illustrated by numerical results.

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A continuous force model for the impact analysis of flexible multibody systems

Cited by 164 publications

References 15 publications

On the continuous contact force models for soft materials in multibody dynamics

On the continuous contact force models for soft materials in multibody dynamics

Identification of Compliant Contact Force Parameters in Multibody Systems Based on the Neural Network Approach Related to Municipal Property Damages

Dynamics of finite element structural models with multiple unilateral constraints

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