Constitutive modeling of materials and contacts using the disturbed state concept: Part 2 – Validations at specimen and boundary value problem levels

Desai, C. S.

doi:10.1016/j.compstruc.2014.07.026

Cited by 30 publications

(8 citation statements)

References 52 publications

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“…. DSC [36,37] is a unified method to describe the deformation of materials from the initial state to a new equilibrium state or a failure state under the action of external factors. It is used to investigate the constitutive model of engineering materials.…”

Section: Disturbed State Concept (Dsc)mentioning

confidence: 99%

Fracture Performance of a Large‐Stone Asphalt Mixture Based on a Monotonic Tensile Overlay Test

Wei

Liang

2021

Advances in Civil Engineering

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A large-stone asphalt mixture (LSAM) is usually used as the base course of asphalt pavement to prevent the generation of cracks. However, there are few studies on the fracture performance and crack resistance of LSAMs. Under the monotonic tensile loading mode, the overlay test (OT) was explored to investigate the influence of different test factors on the cracking resistance and fracture performance. The study results indicated that a change in temperature and aging results in a variation in fractal dimension, the fracture energy of crack growth is higher than that of crack initiation, and fracture energy is increased to a certain extent by decreased temperature, an increased loading rate or increased aging. Finally, a constitutive model is established based on the disturbed state concept (DSC), and the proposed constitutive model is consistent with the test results.

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Section: Disturbed State Concept (Dsc)mentioning

confidence: 99%

Fracture Performance of a Large‐Stone Asphalt Mixture Based on a Monotonic Tensile Overlay Test

Wei

Liang

2021

Advances in Civil Engineering

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“…Zhu et al [23] developed an analytical solution to predict shield constructioninduced ground movements in green field by considering the disturbance effect of initial relative density on the shear modulus of sandy soil. Detailed information about DSC theory in applications for more materials and regions can be found in the work by Desai [24,25].…”

Section: Introductionmentioning

confidence: 99%

Constitutive Modeling of Physical Properties of Coastal Sand during Tunneling Construction Disturbance

Zhu

Zhao

et al. 2021

JMSE

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This paper presents a simple but workable constitutive model for the stress–strain relationship of sandy soil during the process of tunneling construction disturbance in coastal cities. The model was developed by linking the parameter K and internal angle φ of the Duncan–Chang model with the disturbed degree of sand, in which the effects of the initial void ratio on the strength deformation property of sands are considered using a unified disturbance function based on disturbed state concept theory. Three cases were analyzed to investigate the validity of the proposed constitutive model considering disturbance. After validation, the proposed constitutive model was further incorporated into a 3D finite element framework to predict the soil deformation caused by shield construction. It was found that the simulated results agreed well with the analytical solution, indicating that the developed numerical model with proposed constitutive relationship is capable of characterizing the mechanical properties of sand under tunneling construction disturbance.

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“…From a macroscopic perspective, the influence of the change in the material structure on the mechanical properties has received increasing attention. e disturbed state concept (DSC) provides a unified modeling method for engineering materials [23][24][25][26], which can consider various responses such as elasticity, plasticity, creep, microcracking and fracture, softening, and healing within a unified coupling framework. However, due to the lack of test data for calibration and field measurement for validation, DSC has not been widely used in the field of pavement.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

Wei

Meng

et al. 2020

Advances in Materials Science and Engineering

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The mechanical response characteristics of large stone asphalt mixtures (LSAMs) are key factors in studying its fatigue characteristics during cyclic loading tests. Based on disturbed state concept (DSC) and viscoelastic continuum damage model (VECD), a series of tests using an overlay test (OT) were carried out to investigate the fatigue characteristics of LSAM. The results showed that disturbance and damage increased with decreasing frequency and increasing loading displacement and aging degree, while the asphalt content had no obvious adverse effect on the increase in damage. In addition, the disturbance and damage grew rapidly in the early stage of loading and reduced in the later stage of loading. On the contrary, based on DSC, the constitutive model modified with disturbance function (D) defined by external work could describe the mechanical properties, and the evolution process of disturbance function (D) could reflect the damage change in cyclic loading tests. The research conclusion can enrich the theoretical research on the fatigue failure response and mechanism of LSAM under cyclic loading and expand the application scope of DSC in the field of pavement.

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Constitutive modeling of materials and contacts using the disturbed state concept: Part 2 – Validations at specimen and boundary value problem levels

Cited by 30 publications

References 52 publications

Fracture Performance of a Large‐Stone Asphalt Mixture Based on a Monotonic Tensile Overlay Test

Fracture Performance of a Large‐Stone Asphalt Mixture Based on a Monotonic Tensile Overlay Test

Constitutive Modeling of Physical Properties of Coastal Sand during Tunneling Construction Disturbance

Investigating the Fatigue Characteristics of Large Stone Asphalt Mixtures Based on the Disturbed State Concept

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