Results 251 to 260 of about 543,240 (305)
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Strain-rate dependent fracture initiation
International Journal of Fracture, 1980The theory of linear elastic dynamic fracture mechanics for Heaviside loading of an isolated crack is employed to formulate the response to constant strain-rate loading of a single crack. Numerical integration of the Heaviside solution is shown to lead to fracture initiation stresses that are dependent upon the imposed strain rate.
M. E. Kipp, D. E. Grady, E. P. Chen
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Viscoplastic Modeling With Strain Rate-History Dependency
Journal of Applied Mechanics, 1983The strain rate-history effect on the plastic behavior of some classes of viscoplastic materials is incorporated into the power formula of Bodner’s model by adopting an integral-memory type equation for the “hardening” state variable. The modified model is incorporated into a finite element program.
Ghoneim, H., Matsouka, S., Chen, Y.
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Localization in strain-rate-dependent solids
Computer Methods in Applied Mechanics and Engineering, 1991Abstract The localization of the deformation in strain-rate-dependent solids evolves through three distinct phases. Its onset is signalled by the first deviation from a homogeneous mode of deformation, which we propose to pinpoint by means of a linear perturbation analysis. The second stage, marked by a sharp increase of the effective strain rate in ‘
Yves M. Leroy, Olivier Chapuis
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Strain rate dependent properties of human craniovertebral ligaments
Journal of the Mechanical Behavior of Biomedical Materials, 2013Craniovertebral ligaments were tested to failure under tensile loading. Ligaments tested included: transverse ligament, anterior atlanto occipital membrane, posterior atlanto occipital membrane, capsular ligaments between Skull-C1 and C1-C2, anterior atlantoaxial membrane, posterior atlantoaxial membrane and the tectorial membrane/vertical cruciate ...
Stephen F E, Mattucci +3 more
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Strain Rate Dependent Shear Plasticity in Graphite Oxide
Nano Letters, 2016Graphene oxide film is made of stacked graphene layers with chemical functionalities, and we report that plasticity in the film can be engineered by strain rate tuning. The deformation behavior and plasticity of such functionalized layered systems is dominated by shear slip between individual layers and interaction between functional groups.
Soumya, Vinod +8 more
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Mechanical properties of trabecular bone. Dependence on strain rate
Journal of Biomechanics, 1991The effect of strain rate (epsilon) and apparent density (rho) on stiffness (E), strength (sigma u), and ultimate strain (epsilon u) was studied in 60 human trabecular bone specimens from the proximal tibia. Testing was performed by uniaxial compression to 5% specimen strain. Six different strain rates were used: 0.0001, 0.001, 0.01, 0.1, 1, and 10 s-1.
F, Linde +4 more
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Temperature-dependent strain rate discontinuity
Materials Science and Engineering: A, 1988Abstract Measurement of strain rate discontinuity in several materials, at and below room temperature, confirms the general occurrence of athermal (stress rate dependent) inelastic strain. Values of both thermal (stress dependent) and athermal strain rate have been measured.
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A strain-rate dependent crack model
Journal of the Mechanics and Physics of Solids, 1971Abstract A uniformly moving crack, preceded by a thin plastic zone, in which the yield stress is linearly dependent on the strain rate, is considered, in both plane and anti-plane strain. This model is used to calculate the variation of the stress intensity factor with crack velocity in the limit of small-scale yielding and the unsteady motion of a
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