Sliding interfaces with contact-impact in large-scale Lagrangian computations

Hallquist, J.O.; Goudreau, G.L.; Benson, David J.

doi:10.1016/0045-7825(85)90030-1

Cited by 456 publications

(220 citation statements)

References 3 publications

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“…As a result, the displacement boundary conditions for each muscle mesh were defined by specifying a set of hip joint angles. The bones were considered as rigid bodies, and a no-friction penalty contact formulation 24 was used to prevent penetration between muscles and bones and between neighboring muscles. The simulations were performed in NIKE3D, 39 a nonlinear implicit finite-element solver.…”

Section: Simulation Proceduresmentioning

confidence: 99%

Three-Dimensional Representation of Complex Muscle Architectures and Geometries

2005

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Abstract-Almost all computer models of the musculoskeletal system represent muscle geometry using a series of line segments. This simplification (i) limits the ability of models to accurately represent the paths of muscles with complex geometry and (ii) assumes that moment arms are equivalent for all fibers within a muscle (or muscle compartment). The goal of this work was to develop and evaluate a new method for creating three-dimensional (3D) finite-element models that represent complex muscle geometry and the variation in moment arms across fibers within a muscle. We created 3D models of the psoas, iliacus, gluteus maximus, and gluteus medius muscles from magnetic resonance (MR) images. Peak fiber moment arms varied substantially among fibers within each muscle (e.g., for the psoas the peak fiber hip flexion moment arms varied from 2 to 3 cm, and for the gluteus maximus the peak fiber hip extension moment arms varied from 1 to 7 cm). Moment arms from the literature were generally within the range of fiber moment arms predicted by the 3D models. The models accurately predicted changes in muscle surface geometry over a 55• range of hip flexion, as compared to changes in shape predicted from MR images (average errors between the model and measured surfaces were between 1.7 and 5.2 mm). This new framework for representing muscle will enhance the accuracy of computer models of the musculoskeletal system.

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Section: Simulation Proceduresmentioning

confidence: 99%

Three-Dimensional Representation of Complex Muscle Architectures and Geometries

2005

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“…One of the most widely used computations method in this area has been the finite-element method (FEM). Commercial software, like ABAQUS, LS-DYNA (Livermore Software Technology Corp., Livermore, Calif.), PAM-Crash (ESI North America, San Diego, Calif.), implement algorithms that include modeling of contact and are capable of simulating impact conditions (see, e.g., Hallquist et al, 1985;Hallquist, 1993). Many problems, such as impact on composite materials, are still difficult to model and/or the results are not satisfactory with finite-elements.…”

Section: Finite-element and Finite-difference Methodsmentioning

confidence: 99%

Impact Mechanics and High-Energy Absorbing Materials: Review

2008

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“…see Hallquist et al [15]) or using a complaint interface layer. In the slideline algorithm, one side of an interface between two contacting bodies is referred to as the master surface, and the other the slave surface.…”

Section: Contact Surfacesmentioning

confidence: 99%

A Three-Dimensional Model of the Resin Film Infusion Process

Loos

Rattazzi

Batra

2002

Journal of Composite Materials

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A finite element code, in modular form, has been developed to model the complete three-dimensional resin film infusion (RFI) process. The problem formulation and its analysis incorporate compaction of the anisotropic elastic porous preform, elastic deformations of the tooling components, heat transfer in the resin, flow of resin through the preform, cure kinetics of the resin, and the heat transfer between the tools and the surrounding environment in the autoclave. The inertia effects and the transfer of heat by convection have been neglected. Two techniques, namely the slideline algorithm and a compliant layer interface, are used to model the possible sliding of the tool over the preform at their common interfaces. Weak forms are derived for (a) the initial-boundary-value problem corresponding to the transient thermal problem, (b) the boundary-value problem for the fluid through an elastic porous medium, and (c) the boundary-value problems for the quasistatic deformations of the tooling components and for a partially or fully saturated porous elastic preform. The finite element method is used to solve these equations, and the flow front is located by using a control volume technique. Computed results are presented for a stiffened T-panel and a two-stiffener panel.

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Sliding interfaces with contact-impact in large-scale Lagrangian computations

Cited by 456 publications

References 3 publications

Three-Dimensional Representation of Complex Muscle Architectures and Geometries

Three-Dimensional Representation of Complex Muscle Architectures and Geometries

Impact Mechanics and High-Energy Absorbing Materials: Review

A Three-Dimensional Model of the Resin Film Infusion Process

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