Results 21 to 30 of about 5,371,238 (109)
Viscoplastic approach for rate-dependent failure analysis of concrete joints and interfaces [PDF]
, 2008 In this work, a new rate-dependent interface model for computational analysis of quasi-brittle materials like concrete is presented. The model is formulated on the basis of the inviscid elastoplastic model by [Carol, I., Prat, P.C., López, C.M., 1997. “A
Etse, G., Carol, I., Lorefice, R.
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A viscoplastic theory for braze alloys [PDF]
, 1996 A new viscoplastic theory for CusilABA and other braze alloys has been developed. Like previous viscoplastic theories,this new theory uses a hyperbolic sine function of effective stress in its kinetic equation for the inelastic strain rate.
Stone, C.M. +3 more
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Anisotropic creep model for soft soils [PDF]
, 2008 In this paper a new anisotropic model for time-dependent behaviour of soft soils is presented. The formulation is based on a previously developed isotropic creep model, assuming rotated Modified Cam Clay ellipses as contours of volumetric creep strain ...
Leoni, Martino +6 more
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International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 8, Page 3281-3296, 10 June 2026.ABSTRACT Saturated high plasticity clays show complex nonlinear, rate‐dependent, and hysteresis behaviors under non‐monotonic stress paths, requiring advanced mathematical constitutive equations for accurate description. Taking into account the inherent advantages of kinematic hardening mechanisms in simulating complex stress histories, this paper ...
Wei Cheng, Zhen‐Yu Yin
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Temperature rise in a viscoplastic material during dynamic crack growth [PDF]
, 1991 Dynamic steady-state crack growth has been analyzed under mode I plane stress, small-scale yielding conditions using a finite element procedure. A Perzyna type viscoplastic constitutive equation has been employed in this analysis.
O. Prabhakar +5 more
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Viscoplastic Modeling the Evolving Mechanical Properties of Shotcrete 3D Printing Material
Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.ABSTRACT In recent years, additive manufacturing in construction (AMC) has gradually influenced the building industry by offering a faster and more efficient way to build with concrete. Unlike traditional methods that rely on molds, AMC deposits material layer by layer through an automated process, enabling new possibilities for custom designs and ...
Quoc Tuan La +3 more
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Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract Melt migration in partially molten rocks is commonly described by porous flow models controlled by the hydro‐mechanical compaction length, which effectively explains melt extraction at mid‐ocean ridges. However, this framework cannot account for the paradoxical accumulation of small melt fractions into rhythmic leucosome–melanosome bands in ...
Qingpei Sun +3 more
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A Thermodynamic Framework for Turing‐Type Instabilities in Porous Media: Part I Theory
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.Abstract Pattern formation in geological materials is commonly described using analogies to Turing‐type reaction–diffusion systems, yet a unifying thermodynamic explanation remains elusive. Here we develop a multiscale, thermodynamically consistent framework for pattern‐forming instabilities in porous media undergoing coupled thermo–hydro–mechanical ...
Klaus Regenauer‐Lieb +5 more
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Development and Validation of a Thermomechanically Coupled Plasticity Model at Elevated Temperatures
Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.Traditional material models often fail to accurately capture the cyclic behaviour of metals under combined thermomechanical loads, which leads to significant discrepancies in predicting material performance at elevated temperatures. This study develops and validates an advanced thermomechanically coupled plasticity model for G22NiMoCr5‐6 cast steel ...
Safa Yusuf Cetin +2 more
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Reflections on frequently used viscoplastic constitutive models
, 2005 The constitutive problems of plasticity and viscoplasticity are considered in detail via an internal variable formulation. The treatment is set within the framework of the generalized standard material model and exploits the appropriate mathematical ...
DE ANGELIS, FABIO, Fabio De Angelis
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